Actual source code: pinit.c
petsc-3.7.1 2016-05-15
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      2: /*
      3:    This file defines the initialization of PETSc, including PetscInitialize()
      4: */
      5: #include <petsc/private/petscimpl.h>        /*I  "petscsys.h"   I*/
      6: #include <petscvalgrind.h>
      7: #include <petscviewer.h>

      9: #if defined(PETSC_USE_LOG)
     10: extern PetscErrorCode PetscLogInitialize(void);
     11: #endif

     13: #if defined(PETSC_SERIALIZE_FUNCTIONS)
     14: PetscFPT PetscFPTData = 0;
     15: #endif

     17: #if defined(PETSC_HAVE_CUDA)
     18: cublasHandle_t cublasv2handle = NULL;
     19: #endif

     21: #if defined(PETSC_HAVE_SAWS)
     22: #include <petscviewersaws.h>
     23: #endif
     24: /* -----------------------------------------------------------------------------------------*/

     26: extern FILE *petsc_history;

     28: extern PetscErrorCode PetscInitialize_DynamicLibraries(void);
     29: extern PetscErrorCode PetscFinalize_DynamicLibraries(void);
     30: extern PetscErrorCode PetscFunctionListPrintAll(void);
     31: extern PetscErrorCode PetscSequentialPhaseBegin_Private(MPI_Comm,int);
     32: extern PetscErrorCode PetscSequentialPhaseEnd_Private(MPI_Comm,int);
     33: extern PetscErrorCode PetscCloseHistoryFile(FILE**);

     35: /* user may set this BEFORE calling PetscInitialize() */
     36: MPI_Comm PETSC_COMM_WORLD = MPI_COMM_NULL;

     38: PetscMPIInt Petsc_Counter_keyval   = MPI_KEYVAL_INVALID;
     39: PetscMPIInt Petsc_InnerComm_keyval = MPI_KEYVAL_INVALID;
     40: PetscMPIInt Petsc_OuterComm_keyval = MPI_KEYVAL_INVALID;

     42: /*
     43:      Declare and set all the string names of the PETSc enums
     44: */
     45: const char *const PetscBools[]     = {"FALSE","TRUE","PetscBool","PETSC_",0};
     46: const char *const PetscCopyModes[] = {"COPY_VALUES","OWN_POINTER","USE_POINTER","PetscCopyMode","PETSC_",0};
     47: const char *const PetscDataTypes[] = {"INT","DOUBLE","COMPLEX","LONG","SHORT","FLOAT",
     48:                                       "CHAR","LOGICAL","ENUM","BOOL","LONGDOUBLE","OBJECT","FUNCTION","PetscDataType","PETSC_",0};

     50: PetscBool PetscPreLoadingUsed = PETSC_FALSE;
     51: PetscBool PetscPreLoadingOn   = PETSC_FALSE;

     53: PetscInt PetscHotRegionDepth;

     55: /*
     56:        Checks the options database for initializations related to the
     57:     PETSc components
     58: */
     61: PetscErrorCode  PetscOptionsCheckInitial_Components(void)
     62: {
     63:   PetscBool      flg1;

     67:   PetscOptionsHasName(NULL,NULL,"-help",&flg1);
     68:   if (flg1) {
     69: #if defined(PETSC_USE_LOG)
     70:     MPI_Comm comm = PETSC_COMM_WORLD;
     71:     (*PetscHelpPrintf)(comm,"------Additional PETSc component options--------\n");
     72:     (*PetscHelpPrintf)(comm," -log_exclude: <vec,mat,pc.ksp,snes>\n");
     73:     (*PetscHelpPrintf)(comm," -info_exclude: <null,vec,mat,pc,ksp,snes,ts>\n");
     74:     (*PetscHelpPrintf)(comm,"-----------------------------------------------\n");
     75: #endif
     76:   }
     77:   return(0);
     78: }

     82: /*
     83:       PetscInitializeNoPointers - Calls PetscInitialize() from C/C++ without the pointers to argc and args

     85:    Collective

     87:    Level: advanced

     89:     Notes: this is called only by the PETSc MATLAB and Julia interface. Even though it might start MPI it sets the flag to
     90:      indicate that it did NOT start MPI so that the PetscFinalize() does not end MPI, thus allowing PetscInitialize() to
     91:      be called multiple times from MATLAB and Julia without the problem of trying to initialize MPI more than once.

     93:      Turns off PETSc signal handling because that can interact with MATLAB's signal handling causing random crashes.

     95: .seealso: PetscInitialize(), PetscInitializeFortran(), PetscInitializeNoArguments()
     96: */
     97: PetscErrorCode  PetscInitializeNoPointers(int argc,char **args,const char *filename,const char *help)
     98: {
    100:   int            myargc   = argc;
    101:   char           **myargs = args;

    104:   PetscInitialize(&myargc,&myargs,filename,help);
    105:   PetscPopSignalHandler();
    106:   PetscBeganMPI = PETSC_FALSE;
    107:   PetscFunctionReturn(ierr);
    108: }

    112: /*
    113:       Used by MATLAB and Julia interface to get communicator
    114: */
    115: PetscErrorCode  PetscGetPETSC_COMM_SELF(MPI_Comm *comm)
    116: {
    118:   *comm = PETSC_COMM_SELF;
    119:   return(0);
    120: }

    124: /*@C
    125:       PetscInitializeNoArguments - Calls PetscInitialize() from C/C++ without
    126:         the command line arguments.

    128:    Collective

    130:    Level: advanced

    132: .seealso: PetscInitialize(), PetscInitializeFortran()
    133: @*/
    134: PetscErrorCode  PetscInitializeNoArguments(void)
    135: {
    137:   int            argc   = 0;
    138:   char           **args = 0;

    141:   PetscInitialize(&argc,&args,NULL,NULL);
    142:   PetscFunctionReturn(ierr);
    143: }

    147: /*@
    148:       PetscInitialized - Determine whether PETSc is initialized.

    150:    Level: beginner

    152: .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
    153: @*/
    154: PetscErrorCode PetscInitialized(PetscBool  *isInitialized)
    155: {
    156:   *isInitialized = PetscInitializeCalled;
    157:   return 0;
    158: }

    162: /*@
    163:       PetscFinalized - Determine whether PetscFinalize() has been called yet

    165:    Level: developer

    167: .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
    168: @*/
    169: PetscErrorCode  PetscFinalized(PetscBool  *isFinalized)
    170: {
    171:   *isFinalized = PetscFinalizeCalled;
    172:   return 0;
    173: }

    175: extern PetscErrorCode PetscOptionsCheckInitial_Private(void);

    177: /*
    178:        This function is the MPI reduction operation used to compute the sum of the
    179:    first half of the datatype and the max of the second half.
    180: */
    181: MPI_Op PetscMaxSum_Op = 0;

    185: PETSC_EXTERN void MPIAPI PetscMaxSum_Local(void *in,void *out,int *cnt,MPI_Datatype *datatype)
    186: {
    187:   PetscInt *xin = (PetscInt*)in,*xout = (PetscInt*)out,i,count = *cnt;

    190:   if (*datatype != MPIU_2INT) {
    191:     (*PetscErrorPrintf)("Can only handle MPIU_2INT data types");
    192:     MPI_Abort(MPI_COMM_WORLD,1);
    193:   }

    195:   for (i=0; i<count; i++) {
    196:     xout[2*i]    = PetscMax(xout[2*i],xin[2*i]);
    197:     xout[2*i+1] += xin[2*i+1];
    198:   }
    199:   PetscFunctionReturnVoid();
    200: }

    202: /*
    203:     Returns the max of the first entry owned by this processor and the
    204: sum of the second entry.

    206:     The reason sizes[2*i] contains lengths sizes[2*i+1] contains flag of 1 if length is nonzero
    207: is so that the PetscMaxSum_Op() can set TWO values, if we passed in only sizes[i] with lengths
    208: there would be no place to store the both needed results.
    209: */
    212: PetscErrorCode  PetscMaxSum(MPI_Comm comm,const PetscInt sizes[],PetscInt *max,PetscInt *sum)
    213: {

    217: #if defined(PETSC_HAVE_MPI_REDUCE_SCATTER_BLOCK)
    218:   {
    219:     struct {PetscInt max,sum;} work;
    220:     MPI_Reduce_scatter_block((void*)sizes,&work,1,MPIU_2INT,PetscMaxSum_Op,comm);
    221:     *max = work.max;
    222:     *sum = work.sum;
    223:   }
    224: #else
    225:   {
    226:     PetscMPIInt    size,rank;
    227:     struct {PetscInt max,sum;} *work;
    228:     MPI_Comm_size(comm,&size);
    229:     MPI_Comm_rank(comm,&rank);
    230:     PetscMalloc1(size,&work);
    231:     MPIU_Allreduce((void*)sizes,work,size,MPIU_2INT,PetscMaxSum_Op,comm);
    232:     *max = work[rank].max;
    233:     *sum = work[rank].sum;
    234:     PetscFree(work);
    235:   }
    236: #endif
    237:   return(0);
    238: }

    240: /* ----------------------------------------------------------------------------*/

    242: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128)
    243: MPI_Op MPIU_SUM = 0;

    247: PETSC_EXTERN void PetscSum_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    248: {
    249:   PetscInt i,count = *cnt;

    252:   if (*datatype == MPIU_REAL) {
    253:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    254:     for (i=0; i<count; i++) xout[i] += xin[i];
    255:   }
    256: #if defined(PETSC_HAVE_COMPLEX)
    257:   else if (*datatype == MPIU_COMPLEX) {
    258:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    259:     for (i=0; i<count; i++) xout[i] += xin[i];
    260:   }
    261: #endif
    262:   else {
    263:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
    264:     MPI_Abort(MPI_COMM_WORLD,1);
    265:   }
    266:   PetscFunctionReturnVoid();
    267: }
    268: #endif

    270: #if defined(PETSC_USE_REAL___FLOAT128)
    271: MPI_Op MPIU_MAX = 0;
    272: MPI_Op MPIU_MIN = 0;

    276: PETSC_EXTERN void PetscMax_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    277: {
    278:   PetscInt i,count = *cnt;

    281:   if (*datatype == MPIU_REAL) {
    282:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    283:     for (i=0; i<count; i++) xout[i] = PetscMax(xout[i],xin[i]);
    284:   }
    285: #if defined(PETSC_HAVE_COMPLEX)
    286:   else if (*datatype == MPIU_COMPLEX) {
    287:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    288:     for (i=0; i<count; i++) {
    289:       xout[i] = PetscRealPartComplex(xout[i])<PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
    290:     }
    291:   }
    292: #endif
    293:   else {
    294:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
    295:     MPI_Abort(MPI_COMM_WORLD,1);
    296:   }
    297:   PetscFunctionReturnVoid();
    298: }

    302: PETSC_EXTERN void PetscMin_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    303: {
    304:   PetscInt    i,count = *cnt;

    307:   if (*datatype == MPIU_REAL) {
    308:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    309:     for (i=0; i<count; i++) xout[i] = PetscMin(xout[i],xin[i]);
    310:   }
    311: #if defined(PETSC_HAVE_COMPLEX)
    312:   else if (*datatype == MPIU_COMPLEX) {
    313:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    314:     for (i=0; i<count; i++) {
    315:       xout[i] = PetscRealPartComplex(xout[i])>PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
    316:     }
    317:   }
    318: #endif
    319:   else {
    320:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_SCALAR data (i.e. double or complex) types");
    321:     MPI_Abort(MPI_COMM_WORLD,1);
    322:   }
    323:   PetscFunctionReturnVoid();
    324: }
    325: #endif

    329: /*
    330:    Private routine to delete internal tag/name counter storage when a communicator is freed.

    332:    This is called by MPI, not by users. This is called by MPI_Comm_free() when the communicator that has this  data as an attribute is freed.

    334:    Note: this is declared extern "C" because it is passed to MPI_Keyval_create()

    336: */
    337: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelCounter(MPI_Comm comm,PetscMPIInt keyval,void *count_val,void *extra_state)
    338: {

    342:   PetscInfo1(0,"Deleting counter data in an MPI_Comm %ld\n",(long)comm);if (ierr) PetscFunctionReturn((PetscMPIInt)ierr);
    343:   PetscFree(count_val);if (ierr) PetscFunctionReturn((PetscMPIInt)ierr);
    344:   PetscFunctionReturn(MPI_SUCCESS);
    345: }

    349: /*
    350:   This is invoked on the outer comm as a result of either PetscCommDestroy() (via MPI_Attr_delete) or when the user
    351:   calls MPI_Comm_free().

    353:   This is the only entry point for breaking the links between inner and outer comms.

    355:   This is called by MPI, not by users. This is called when MPI_Comm_free() is called on the communicator.

    357:   Note: this is declared extern "C" because it is passed to MPI_Keyval_create()

    359: */
    360: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelComm_Outer(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
    361: {
    363:   PetscMPIInt    flg;
    364:   union {MPI_Comm comm; void *ptr;} icomm,ocomm;

    367:   if (keyval != Petsc_InnerComm_keyval) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Unexpected keyval");
    368:   icomm.ptr = attr_val;

    370:   MPI_Attr_get(icomm.comm,Petsc_OuterComm_keyval,&ocomm,&flg);
    371:   if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected reference to outer comm");
    372:   if (ocomm.comm != comm) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm has reference to non-matching outer comm");
    373:   MPI_Attr_delete(icomm.comm,Petsc_OuterComm_keyval); /* Calls Petsc_DelComm_Inner */
    374:   PetscInfo1(0,"User MPI_Comm %ld is being freed after removing reference from inner PETSc comm to this outer comm\n",(long)comm);if (ierr) PetscFunctionReturn((PetscMPIInt)ierr);
    375:   PetscFunctionReturn(MPI_SUCCESS);
    376: }

    380: /*
    381:  * This is invoked on the inner comm when Petsc_DelComm_Outer calls MPI_Attr_delete.  It should not be reached any other way.
    382:  */
    383: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelComm_Inner(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
    384: {

    388:   PetscInfo1(0,"Removing reference to PETSc communicator embedded in a user MPI_Comm %ld\n",(long)comm);if (ierr) PetscFunctionReturn((PetscMPIInt)ierr);
    389:   PetscFunctionReturn(MPI_SUCCESS);
    390: }

    392: #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
    393: #if !defined(PETSC_WORDS_BIGENDIAN)
    394: PETSC_EXTERN PetscMPIInt PetscDataRep_extent_fn(MPI_Datatype,MPI_Aint*,void*);
    395: PETSC_EXTERN PetscMPIInt PetscDataRep_read_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
    396: PETSC_EXTERN PetscMPIInt PetscDataRep_write_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
    397: #endif
    398: #endif

    400: int  PetscGlobalArgc   = 0;
    401: char **PetscGlobalArgs = 0;
    402: PetscSegBuffer PetscCitationsList;

    406: PetscErrorCode PetscCitationsInitialize()
    407: {

    411:   PetscSegBufferCreate(1,10000,&PetscCitationsList);
    412:   PetscCitationsRegister("@TechReport{petsc-user-ref,\n  Author = {Satish Balay and Shrirang Abhyankar and Mark F. Adams and Jed Brown and Peter Brune\n            and Kris Buschelman and Lisandro Dalcin and Victor Eijkhout and William D. Gropp\n            and Dinesh Kaushik and Matthew G. Knepley\n            and Lois Curfman McInnes and Karl Rupp and Barry F. Smith\n            and Stefano Zampini and Hong Zhang and Hong Zhang},\n  Title = {{PETS}c Users Manual},\n  Number = {ANL-95/11 - Revision 3.7},\n  Institution = {Argonne National Laboratory},\n  Year = {2016}\n}\n",NULL);
    413:   PetscCitationsRegister("@InProceedings{petsc-efficient,\n  Author = {Satish Balay and William D. Gropp and Lois Curfman McInnes and Barry F. Smith},\n  Title = {Efficient Management of Parallelism in Object Oriented Numerical Software Libraries},\n  Booktitle = {Modern Software Tools in Scientific Computing},\n  Editor = {E. Arge and A. M. Bruaset and H. P. Langtangen},\n  Pages = {163--202},\n  Publisher = {Birkh{\\\"{a}}user Press},\n  Year = {1997}\n}\n",NULL);
    414:   return(0);
    415: }

    419: /*@C
    420:    PetscGetArgs - Allows you to access the raw command line arguments anywhere
    421:      after PetscInitialize() is called but before PetscFinalize().

    423:    Not Collective

    425:    Output Parameters:
    426: +  argc - count of number of command line arguments
    427: -  args - the command line arguments

    429:    Level: intermediate

    431:    Notes:
    432:       This is usually used to pass the command line arguments into other libraries
    433:    that are called internally deep in PETSc or the application.

    435:       The first argument contains the program name as is normal for C arguments.

    437:    Concepts: command line arguments

    439: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArguments()

    441: @*/
    442: PetscErrorCode  PetscGetArgs(int *argc,char ***args)
    443: {
    445:   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
    446:   *argc = PetscGlobalArgc;
    447:   *args = PetscGlobalArgs;
    448:   return(0);
    449: }

    453: /*@C
    454:    PetscGetArguments - Allows you to access the  command line arguments anywhere
    455:      after PetscInitialize() is called but before PetscFinalize().

    457:    Not Collective

    459:    Output Parameters:
    460: .  args - the command line arguments

    462:    Level: intermediate

    464:    Notes:
    465:       This does NOT start with the program name and IS null terminated (final arg is void)

    467:    Concepts: command line arguments

    469: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscFreeArguments()

    471: @*/
    472: PetscErrorCode  PetscGetArguments(char ***args)
    473: {
    474:   PetscInt       i,argc = PetscGlobalArgc;

    478:   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
    479:   if (!argc) {*args = 0; return(0);}
    480:   PetscMalloc1(argc,args);
    481:   for (i=0; i<argc-1; i++) {
    482:     PetscStrallocpy(PetscGlobalArgs[i+1],&(*args)[i]);
    483:   }
    484:   (*args)[argc-1] = 0;
    485:   return(0);
    486: }

    490: /*@C
    491:    PetscFreeArguments - Frees the memory obtained with PetscGetArguments()

    493:    Not Collective

    495:    Output Parameters:
    496: .  args - the command line arguments

    498:    Level: intermediate

    500:    Concepts: command line arguments

    502: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscGetArguments()

    504: @*/
    505: PetscErrorCode  PetscFreeArguments(char **args)
    506: {
    507:   PetscInt       i = 0;

    511:   if (!args) return(0);
    512:   while (args[i]) {
    513:     PetscFree(args[i]);
    514:     i++;
    515:   }
    516:   PetscFree(args);
    517:   return(0);
    518: }

    520: #if defined(PETSC_HAVE_SAWS)
    521: #include <petscconfiginfo.h>

    525: PetscErrorCode  PetscInitializeSAWs(const char help[])
    526: {
    527:   if (!PetscGlobalRank) {
    528:     char           cert[PETSC_MAX_PATH_LEN],root[PETSC_MAX_PATH_LEN],*intro,programname[64],*appline,*options,version[64];
    529:     int            port;
    530:     PetscBool      flg,rootlocal = PETSC_FALSE,flg2,selectport = PETSC_FALSE;
    531:     size_t         applinelen,introlen;
    533:     char           sawsurl[256];

    535:     PetscOptionsHasName(NULL,NULL,"-saws_log",&flg);
    536:     if (flg) {
    537:       char  sawslog[PETSC_MAX_PATH_LEN];

    539:       PetscOptionsGetString(NULL,NULL,"-saws_log",sawslog,PETSC_MAX_PATH_LEN,NULL);
    540:       if (sawslog[0]) {
    541:         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(sawslog));
    542:       } else {
    543:         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(NULL));
    544:       }
    545:     }
    546:     PetscOptionsGetString(NULL,NULL,"-saws_https",cert,PETSC_MAX_PATH_LEN,&flg);
    547:     if (flg) {
    548:       PetscStackCallSAWs(SAWs_Set_Use_HTTPS,(cert));
    549:     }
    550:     PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select",&selectport,NULL);
    551:     if (selectport) {
    552:         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
    553:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    554:     } else {
    555:       PetscOptionsGetInt(NULL,NULL,"-saws_port",&port,&flg);
    556:       if (flg) {
    557:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    558:       }
    559:     }
    560:     PetscOptionsGetString(NULL,NULL,"-saws_root",root,PETSC_MAX_PATH_LEN,&flg);
    561:     if (flg) {
    562:       PetscStackCallSAWs(SAWs_Set_Document_Root,(root));
    563:       PetscStrcmp(root,".",&rootlocal);
    564:     } else {
    565:       PetscOptionsHasName(NULL,NULL,"-saws_options",&flg);
    566:       if (flg) {
    567:         PetscStrreplace(PETSC_COMM_WORLD,"${PETSC_DIR}/share/petsc/saws",root,PETSC_MAX_PATH_LEN);
    568:         PetscStackCallSAWs(SAWs_Set_Document_Root,(root));
    569:       }
    570:     }
    571:     PetscOptionsHasName(NULL,NULL,"-saws_local",&flg2);
    572:     if (flg2) {
    573:       char jsdir[PETSC_MAX_PATH_LEN];
    574:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"-saws_local option requires -saws_root option");
    575:       PetscSNPrintf(jsdir,PETSC_MAX_PATH_LEN,"%s/js",root);
    576:       PetscTestDirectory(jsdir,'r',&flg);
    577:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_READ,"-saws_local option requires js directory in root directory");
    578:       PetscStackCallSAWs(SAWs_Push_Local_Header,());
    579:     }
    580:     PetscGetProgramName(programname,64);
    581:     PetscStrlen(help,&applinelen);
    582:     introlen   = 4096 + applinelen;
    583:     applinelen += 1024;
    584:     PetscMalloc(applinelen,&appline);
    585:     PetscMalloc(introlen,&intro);

    587:     if (rootlocal) {
    588:       PetscSNPrintf(appline,applinelen,"%s.c.html",programname);
    589:       PetscTestFile(appline,'r',&rootlocal);
    590:     }
    591:     PetscOptionsGetAll(NULL,&options);
    592:     if (rootlocal && help) {
    593:       PetscSNPrintf(appline,applinelen,"<center> Running <a href=\"%s.c.html\">%s</a> %s</center><br><center><pre>%s</pre></center><br>\n",programname,programname,options,help);
    594:     } else if (help) {
    595:       PetscSNPrintf(appline,applinelen,"<center>Running %s %s</center><br><center><pre>%s</pre></center><br>",programname,options,help);
    596:     } else {
    597:       PetscSNPrintf(appline,applinelen,"<center> Running %s %s</center><br>\n",programname,options);
    598:     }
    599:     PetscFree(options);
    600:     PetscGetVersion(version,sizeof(version));
    601:     PetscSNPrintf(intro,introlen,"<body>\n"
    602:                                     "<center><h2> <a href=\"http://www.mcs.anl.gov/petsc\">PETSc</a> Application Web server powered by <a href=\"https://bitbucket.org/saws/saws\">SAWs</a> </h2></center>\n"
    603:                                     "<center>This is the default PETSc application dashboard, from it you can access any published PETSc objects or logging data</center><br><center>%s configured with %s</center><br>\n"
    604:                                     "%s",version,petscconfigureoptions,appline);
    605:     PetscStackCallSAWs(SAWs_Push_Body,("index.html",0,intro));
    606:     PetscFree(intro);
    607:     PetscFree(appline);
    608:     PetscStackCallSAWs(SAWs_Initialize,());
    609:     if (selectport) {
    610:       PetscStackCallSAWs(SAWs_Get_FullURL,(sizeof(sawsurl),sawsurl));
    611:       PetscPrintf(PETSC_COMM_WORLD,"Point your browser to %s for SAWs\n",sawsurl);
    612:     }
    613:     PetscCitationsRegister("@TechReport{ saws,\n"
    614:                                   "  Author = {Matt Otten and Jed Brown and Barry Smith},\n"
    615:                                   "  Title  = {Scientific Application Web Server (SAWs) Users Manual},\n"
    616:                                   "  Institution = {Argonne National Laboratory},\n"
    617:                                   "  Year   = 2013\n}\n",NULL);
    618:   }
    619:   return(0);
    620: }
    621: #endif

    625: /*@C
    626:    PetscInitialize - Initializes the PETSc database and MPI.
    627:    PetscInitialize() calls MPI_Init() if that has yet to be called,
    628:    so this routine should always be called near the beginning of
    629:    your program -- usually the very first line!

    631:    Collective on MPI_COMM_WORLD or PETSC_COMM_WORLD if it has been set

    633:    Input Parameters:
    634: +  argc - count of number of command line arguments
    635: .  args - the command line arguments
    636: .  file - [optional] PETSc database file, also checks ~username/.petscrc and .petscrc use NULL to not check for
    637:           code specific file. Use -skip_petscrc in the code specific file to skip the .petscrc files
    638: -  help - [optional] Help message to print, use NULL for no message

    640:    If you wish PETSc code to run ONLY on a subcommunicator of MPI_COMM_WORLD, create that
    641:    communicator first and assign it to PETSC_COMM_WORLD BEFORE calling PetscInitialize(). Thus if you are running a
    642:    four process job and two processes will run PETSc and have PetscInitialize() and PetscFinalize() and two process will not,
    643:    then do this. If ALL processes in the job are using PetscInitialize() and PetscFinalize() then you don't need to do this, even
    644:    if different subcommunicators of the job are doing different things with PETSc.

    646:    Options Database Keys:
    647: +  -start_in_debugger [noxterm,dbx,xdb,gdb,...] - Starts program in debugger
    648: .  -on_error_attach_debugger [noxterm,dbx,xdb,gdb,...] - Starts debugger when error detected
    649: .  -on_error_emacs <machinename> causes emacsclient to jump to error file
    650: .  -on_error_abort calls abort() when error detected (no traceback)
    651: .  -on_error_mpiabort calls MPI_abort() when error detected
    652: .  -error_output_stderr prints error messages to stderr instead of the default stdout
    653: .  -error_output_none does not print the error messages (but handles errors in the same way as if this was not called)
    654: .  -debugger_nodes [node1,node2,...] - Indicates nodes to start in debugger
    655: .  -debugger_pause [sleeptime] (in seconds) - Pauses debugger
    656: .  -stop_for_debugger - Print message on how to attach debugger manually to
    657:                         process and wait (-debugger_pause) seconds for attachment
    658: .  -malloc - Indicates use of PETSc error-checking malloc (on by default for debug version of libraries)
    659: .  -malloc no - Indicates not to use error-checking malloc
    660: .  -malloc_debug - check for memory corruption at EVERY malloc or free
    661: .  -malloc_dump - prints a list of all unfreed memory at the end of the run
    662: .  -malloc_test - like -malloc_dump -malloc_debug, but only active for debugging builds
    663: .  -fp_trap - Stops on floating point exceptions (Note that on the
    664:               IBM RS6000 this slows code by at least a factor of 10.)
    665: .  -no_signal_handler - Indicates not to trap error signals
    666: .  -shared_tmp - indicates /tmp directory is shared by all processors
    667: .  -not_shared_tmp - each processor has own /tmp
    668: .  -tmp - alternative name of /tmp directory
    669: .  -get_total_flops - returns total flops done by all processors
    670: -  -memory_view - Print memory usage at end of run

    672:    Options Database Keys for Profiling:
    673:    See Users-Manual: Chapter 13 Profiling for details.
    674: +  -info <optional filename> - Prints verbose information to the screen
    675: .  -info_exclude <null,vec,mat,pc,ksp,snes,ts> - Excludes some of the verbose messages
    676: .  -log_sync - Log the synchronization in scatters, inner products and norms
    677: .  -log_trace [filename] - Print traces of all PETSc calls to the screen (useful to determine where a program
    678:         hangs without running in the debugger).  See PetscLogTraceBegin().
    679: .  -log_view [:filename:format] - Prints summary of flop and timing information to screen or file, see PetscLogView().
    680: .  -log_summary [filename] - (Deprecated, use -log_view) Prints summary of flop and timing information to screen. If the filename is specified the
    681:         summary is written to the file.  See PetscLogView().
    682: .  -log_exclude: <vec,mat,pc.ksp,snes> - excludes subset of object classes from logging
    683: .  -log_all [filename] - Logs extensive profiling information  See PetscLogDump().
    684: .  -log [filename] - Logs basic profiline information  See PetscLogDump().
    685: -  -log_mpe [filename] - Creates a logfile viewable by the utility Jumpshot (in MPICH distribution)

    687:     Only one of -log_trace, -log_view, -log_summary, -log_all, -log, or -log_mpe may be used at a time

    689:    Options Database Keys for SAWs:
    690: +  -saws_port <portnumber> - port number to publish SAWs data, default is 8080
    691: .  -saws_port_auto_select - have SAWs select a new unique port number where it publishes the data, the URL is printed to the screen
    692:                             this is useful when you are running many jobs that utilize SAWs at the same time
    693: .  -saws_log <filename> - save a log of all SAWs communication
    694: .  -saws_https <certificate file> - have SAWs use HTTPS instead of HTTP
    695: -  -saws_root <directory> - allow SAWs to have access to the given directory to search for requested resources and files

    697:    Environmental Variables:
    698: +   PETSC_TMP - alternative tmp directory
    699: .   PETSC_SHARED_TMP - tmp is shared by all processes
    700: .   PETSC_NOT_SHARED_TMP - each process has its own private tmp
    701: .   PETSC_VIEWER_SOCKET_PORT - socket number to use for socket viewer
    702: -   PETSC_VIEWER_SOCKET_MACHINE - machine to use for socket viewer to connect to

    705:    Level: beginner

    707:    Notes:
    708:    If for some reason you must call MPI_Init() separately, call
    709:    it before PetscInitialize().

    711:    Fortran Version:
    712:    In Fortran this routine has the format
    713: $       call PetscInitialize(file,ierr)

    715: +   ierr - error return code
    716: -  file - [optional] PETSc database file, also checks ~username/.petscrc and .petscrc use PETSC_NULL_CHARACTER to not check for
    717:           code specific file. Use -skip_petscrc in the code specific file to skip the .petscrc files

    719:    Important Fortran Note:
    720:    In Fortran, you MUST use PETSC_NULL_CHARACTER to indicate a
    721:    null character string; you CANNOT just use NULL as
    722:    in the C version. See Users-Manual: Chapter 12 PETSc for Fortran Users for details.

    724:    If your main program is C but you call Fortran code that also uses PETSc you need to call PetscInitializeFortran() soon after
    725:    calling PetscInitialize().

    727:    Concepts: initializing PETSc

    729: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscInitializeNoArguments()

    731: @*/
    732: PetscErrorCode  PetscInitialize(int *argc,char ***args,const char file[],const char help[])
    733: {
    735:   PetscMPIInt    flag, size;
    736:   PetscBool      flg;
    737:   char           hostname[256];
    738: #if defined(PETSC_HAVE_CUDA)
    739:   cublasStatus_t cberr;
    740: #endif

    743:   if (PetscInitializeCalled) return(0);

    745:   /* these must be initialized in a routine, not as a constant declaration*/
    746:   PETSC_STDOUT = stdout;
    747:   PETSC_STDERR = stderr;

    749:   /* on Windows - set printf to default to printing 2 digit exponents */
    750: #if defined(PETSC_HAVE__SET_OUTPUT_FORMAT)
    751:   _set_output_format(_TWO_DIGIT_EXPONENT);
    752: #endif

    754:   PetscOptionsCreateDefault();

    756:   /*
    757:      We initialize the program name here (before MPI_Init()) because MPICH has a bug in
    758:      it that it sets args[0] on all processors to be args[0] on the first processor.
    759:   */
    760:   if (argc && *argc) {
    761:     PetscSetProgramName(**args);
    762:   } else {
    763:     PetscSetProgramName("Unknown Name");
    764:   }

    766:   MPI_Initialized(&flag);
    767:   if (!flag) {
    768:     if (PETSC_COMM_WORLD != MPI_COMM_NULL) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"You cannot set PETSC_COMM_WORLD if you have not initialized MPI first");
    769: #if defined(PETSC_HAVE_MPI_INIT_THREAD)
    770:     {
    771:       PetscMPIInt provided;
    772:       MPI_Init_thread(argc,args,MPI_THREAD_FUNNELED,&provided);
    773:     }
    774: #else
    775:     MPI_Init(argc,args);
    776: #endif
    777:     PetscBeganMPI = PETSC_TRUE;
    778:   }
    779:   if (argc && args) {
    780:     PetscGlobalArgc = *argc;
    781:     PetscGlobalArgs = *args;
    782:   }
    783:   PetscFinalizeCalled = PETSC_FALSE;
    784:   PetscSpinlockCreate(&PetscViewerASCIISpinLockOpen);
    785:   PetscSpinlockCreate(&PetscViewerASCIISpinLockStdout);
    786:   PetscSpinlockCreate(&PetscViewerASCIISpinLockStderr);
    787:   PetscSpinlockCreate(&PetscCommSpinLock);

    789:   if (PETSC_COMM_WORLD == MPI_COMM_NULL) PETSC_COMM_WORLD = MPI_COMM_WORLD;
    790:   MPI_Comm_set_errhandler(PETSC_COMM_WORLD,MPI_ERRORS_RETURN);

    792:   /* Done after init due to a bug in MPICH-GM? */
    793:   PetscErrorPrintfInitialize();

    795:   MPI_Comm_rank(MPI_COMM_WORLD,&PetscGlobalRank);
    796:   MPI_Comm_size(MPI_COMM_WORLD,&PetscGlobalSize);

    798:   MPIU_BOOL = MPI_INT;
    799:   MPIU_ENUM = MPI_INT;

    801:   /*
    802:      Initialized the global complex variable; this is because with
    803:      shared libraries the constructors for global variables
    804:      are not called; at least on IRIX.
    805:   */
    806: #if defined(PETSC_HAVE_COMPLEX)
    807:   {
    808: #if defined(PETSC_CLANGUAGE_CXX)
    809:     PetscComplex ic(0.0,1.0);
    810:     PETSC_i = ic;
    811: #elif defined(PETSC_CLANGUAGE_C)
    812:     PETSC_i = _Complex_I;
    813: #endif
    814:   }

    816: #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
    817:   MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU_C_DOUBLE_COMPLEX);
    818:   MPI_Type_commit(&MPIU_C_DOUBLE_COMPLEX);
    819:   MPI_Type_contiguous(2,MPI_FLOAT,&MPIU_C_COMPLEX);
    820:   MPI_Type_commit(&MPIU_C_COMPLEX);
    821: #endif
    822: #endif /* PETSC_HAVE_COMPLEX */

    824:   /*
    825:      Create the PETSc MPI reduction operator that sums of the first
    826:      half of the entries and maxes the second half.
    827:   */
    828:   MPI_Op_create(PetscMaxSum_Local,1,&PetscMaxSum_Op);

    830: #if defined(PETSC_USE_REAL___FLOAT128)
    831:   MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU___FLOAT128);
    832:   MPI_Type_commit(&MPIU___FLOAT128);
    833: #if defined(PETSC_HAVE_COMPLEX)
    834:   MPI_Type_contiguous(4,MPI_DOUBLE,&MPIU___COMPLEX128);
    835:   MPI_Type_commit(&MPIU___COMPLEX128);
    836: #endif
    837:   MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);
    838:   MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);
    839: #endif

    841: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128)
    842:   MPI_Op_create(PetscSum_Local,1,&MPIU_SUM);
    843: #endif

    845:   MPI_Type_contiguous(2,MPIU_SCALAR,&MPIU_2SCALAR);
    846:   MPI_Type_commit(&MPIU_2SCALAR);

    848: #if defined(PETSC_USE_64BIT_INDICES) || !defined(MPI_2INT)
    849:   MPI_Type_contiguous(2,MPIU_INT,&MPIU_2INT);
    850:   MPI_Type_commit(&MPIU_2INT);
    851: #endif

    854:   /*
    855:      Attributes to be set on PETSc communicators
    856:   */
    857:   MPI_Keyval_create(MPI_NULL_COPY_FN,Petsc_DelCounter,&Petsc_Counter_keyval,(void*)0);
    858:   MPI_Keyval_create(MPI_NULL_COPY_FN,Petsc_DelComm_Outer,&Petsc_InnerComm_keyval,(void*)0);
    859:   MPI_Keyval_create(MPI_NULL_COPY_FN,Petsc_DelComm_Inner,&Petsc_OuterComm_keyval,(void*)0);

    861:   /*
    862:      Build the options database
    863:   */
    864:   PetscOptionsInsert(NULL,argc,args,file);

    867:   /*
    868:      Print main application help message
    869:   */
    870:   PetscOptionsHasName(NULL,NULL,"-help",&flg);
    871:   if (help && flg) {
    872:     PetscPrintf(PETSC_COMM_WORLD,help);
    873:   }
    874:   PetscOptionsCheckInitial_Private();

    876:   PetscCitationsInitialize();

    878: #if defined(PETSC_HAVE_SAWS)
    879:   PetscInitializeSAWs(help);
    880: #endif

    882:   /* Creates the logging data structures; this is enabled even if logging is not turned on */
    883: #if defined(PETSC_USE_LOG)
    884:   PetscLogInitialize();
    885: #endif

    887:   /*
    888:      Load the dynamic libraries (on machines that support them), this registers all
    889:      the solvers etc. (On non-dynamic machines this initializes the PetscDraw and PetscViewer classes)
    890:   */
    891:   PetscInitialize_DynamicLibraries();

    893:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
    894:   PetscInfo1(0,"PETSc successfully started: number of processors = %d\n",size);
    895:   PetscGetHostName(hostname,256);
    896:   PetscInfo1(0,"Running on machine: %s\n",hostname);

    898:   PetscOptionsCheckInitial_Components();
    899:   /* Check the options database for options related to the options database itself */
    900:   PetscOptionsSetFromOptions(NULL);

    902: #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
    903:   /*
    904:       Tell MPI about our own data representation converter, this would/should be used if extern32 is not supported by the MPI

    906:       Currently not used because it is not supported by MPICH.
    907:   */
    908: #if !defined(PETSC_WORDS_BIGENDIAN)
    909:   MPI_Register_datarep((char*)"petsc",PetscDataRep_read_conv_fn,PetscDataRep_write_conv_fn,PetscDataRep_extent_fn,NULL);
    910: #endif
    911: #endif

    913: #if defined(PETSC_HAVE_CUDA)
    914:   flg  = PETSC_TRUE;
    915:   PetscOptionsGetBool(NULL,NULL,"-cublas",&flg,NULL);
    916:   if (flg) {
    917:     PetscMPIInt p;
    918:     for (p = 0; p < PetscGlobalSize; ++p) {
    919:       if (p == PetscGlobalRank) {
    920:         cberr = cublasCreate(&cublasv2handle);CHKERRCUBLAS(cberr);
    921:       }
    922:       MPI_Barrier(PETSC_COMM_WORLD);
    923:     }
    924:   }
    925: #endif

    927:   PetscOptionsHasName(NULL,NULL,"-python",&flg);
    928:   if (flg) {
    929:     PetscInitializeCalled = PETSC_TRUE;
    930:     PetscPythonInitialize(NULL,NULL);
    931:   }

    933:   /*
    934:       Setup building of stack frames for all function calls
    935:   */
    936: #if defined(PETSC_USE_DEBUG) && !defined(PETSC_HAVE_THREADSAFETY)
    937:   PetscStackCreate();
    938: #endif

    940: #if defined(PETSC_SERIALIZE_FUNCTIONS)
    941:   PetscFPTCreate(10000);
    942: #endif

    945:   /*
    946:       Once we are completedly initialized then we can set this variables
    947:   */
    948:   PetscInitializeCalled = PETSC_TRUE;
    949:   return(0);
    950: }

    952: #if defined(PETSC_USE_LOG)
    953: extern PetscObject *PetscObjects;
    954: extern PetscInt    PetscObjectsCounts, PetscObjectsMaxCounts;
    955: extern PetscBool   PetscObjectsLog;
    956: #endif

    960: /*@C
    961:    PetscFinalize - Checks for options to be called at the conclusion
    962:    of the program. MPI_Finalize() is called only if the user had not
    963:    called MPI_Init() before calling PetscInitialize().

    965:    Collective on PETSC_COMM_WORLD

    967:    Options Database Keys:
    968: +  -options_table - Calls PetscOptionsView()
    969: .  -options_left - Prints unused options that remain in the database
    970: .  -objects_dump [all] - Prints list of objects allocated by the user that have not been freed, the option all cause all outstanding objects to be listed
    971: .  -mpidump - Calls PetscMPIDump()
    972: .  -malloc_dump - Calls PetscMallocDump()
    973: .  -malloc_info - Prints total memory usage
    974: -  -malloc_log - Prints summary of memory usage

    976:    Level: beginner

    978:    Note:
    979:    See PetscInitialize() for more general runtime options.

    981: .seealso: PetscInitialize(), PetscOptionsView(), PetscMallocDump(), PetscMPIDump(), PetscEnd()
    982: @*/
    983: PetscErrorCode  PetscFinalize(void)
    984: {
    986:   PetscMPIInt    rank;
    987:   PetscInt       nopt;
    988:   PetscBool      flg1 = PETSC_FALSE,flg2 = PETSC_FALSE,flg3 = PETSC_FALSE;
    989:   PetscBool      flg;
    990: #if defined(PETSC_USE_LOG)
    991:   char           mname[PETSC_MAX_PATH_LEN];
    992: #endif
    993: #if defined(PETSC_HAVE_CUDA)
    994:   cublasStatus_t cberr;
    995: #endif

    998:   if (!PetscInitializeCalled) {
    999:     printf("PetscInitialize() must be called before PetscFinalize()\n");
    1000:     PetscFunctionReturn(PETSC_ERR_ARG_WRONGSTATE);
    1001:   }
    1002:   PetscInfo(NULL,"PetscFinalize() called\n");

    1004:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);

    1006:   PetscOptionsHasName(NULL,NULL,"-citations",&flg);
    1007:   if (flg) {
    1008:     char  *cits, filename[PETSC_MAX_PATH_LEN];
    1009:     FILE  *fd = PETSC_STDOUT;

    1011:     PetscOptionsGetString(NULL,NULL,"-citations",filename,PETSC_MAX_PATH_LEN,NULL);
    1012:     if (filename[0]) {
    1013:       PetscFOpen(PETSC_COMM_WORLD,filename,"w",&fd);
    1014:     }
    1015:     PetscSegBufferGet(PetscCitationsList,1,&cits);
    1016:     cits[0] = 0;
    1017:     PetscSegBufferExtractAlloc(PetscCitationsList,&cits);
    1018:     PetscFPrintf(PETSC_COMM_WORLD,fd,"If you publish results based on this computation please cite the following:\n");
    1019:     PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");
    1020:     PetscFPrintf(PETSC_COMM_WORLD,fd,"%s",cits);
    1021:     PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");
    1022:     PetscFClose(PETSC_COMM_WORLD,fd);
    1023:     PetscFree(cits);
    1024:   }
    1025:   PetscSegBufferDestroy(&PetscCitationsList);

    1027: #if defined(PETSC_HAVE_SSL) && defined(PETSC_USE_SOCKET_VIEWER)
    1028:   /* TextBelt is run for testing purposes only, please do not use this feature often */
    1029:   {
    1030:     PetscInt nmax = 2;
    1031:     char     **buffs;
    1032:     PetscMalloc1(2,&buffs);
    1033:     PetscOptionsGetStringArray(NULL,NULL,"-textbelt",buffs,&nmax,&flg1);
    1034:     if (flg1) {
    1035:       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-textbelt requires either the phone number or number,\"message\"");
    1036:       if (nmax == 1) {
    1037:         PetscMalloc1(128,&buffs[1]);
    1038:         PetscGetProgramName(buffs[1],32);
    1039:         PetscStrcat(buffs[1]," has completed");
    1040:       }
    1041:       PetscTextBelt(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);
    1042:       PetscFree(buffs[0]);
    1043:       PetscFree(buffs[1]);
    1044:     }
    1045:     PetscFree(buffs);
    1046:   }
    1047: #endif
    1048:   /*
    1049:     It should be safe to cancel the options monitors, since we don't expect to be setting options
    1050:     here (at least that are worth monitoring).  Monitors ought to be released so that they release
    1051:     whatever memory was allocated there before -malloc_dump reports unfreed memory.
    1052:   */
    1053:   PetscOptionsMonitorCancel();

    1055: #if defined(PETSC_SERIALIZE_FUNCTIONS)
    1056:   PetscFPTDestroy();
    1057: #endif

    1060: #if defined(PETSC_HAVE_SAWS)
    1061:   flg = PETSC_FALSE;
    1062:   PetscOptionsGetBool(NULL,NULL,"-saw_options",&flg,NULL);
    1063:   if (flg) {
    1064:     PetscOptionsSAWsDestroy();
    1065:   }
    1066: #endif

    1068: #if defined(PETSC_HAVE_X)
    1069:   flg1 = PETSC_FALSE;
    1070:   PetscOptionsGetBool(NULL,NULL,"-x_virtual",&flg1,NULL);
    1071:   if (flg1) {
    1072:     /*  this is a crude hack, but better than nothing */
    1073:     PetscPOpen(PETSC_COMM_WORLD,NULL,"pkill -9 Xvfb","r",NULL);
    1074:   }
    1075: #endif

    1077: #if !defined(PETSC_HAVE_THREADSAFETY)
    1078:   PetscOptionsGetBool(NULL,NULL,"-malloc_info",&flg2,NULL);
    1079:   if (!flg2) {
    1080:     flg2 = PETSC_FALSE;
    1081:     PetscOptionsGetBool(NULL,NULL,"-memory_view",&flg2,NULL);
    1082:   }
    1083:   if (flg2) {
    1084:     PetscMemoryView(PETSC_VIEWER_STDOUT_WORLD,"Summary of Memory Usage in PETSc\n");
    1085:   }
    1086: #endif

    1088: #if defined(PETSC_USE_LOG)
    1089:   flg1 = PETSC_FALSE;
    1090:   PetscOptionsGetBool(NULL,NULL,"-get_total_flops",&flg1,NULL);
    1091:   if (flg1) {
    1092:     PetscLogDouble flops = 0;
    1093:     MPI_Reduce(&petsc_TotalFlops,&flops,1,MPI_DOUBLE,MPI_SUM,0,PETSC_COMM_WORLD);
    1094:     PetscPrintf(PETSC_COMM_WORLD,"Total flops over all processors %g\n",flops);
    1095:   }
    1096: #endif

    1099: #if defined(PETSC_USE_LOG)
    1100: #if defined(PETSC_HAVE_MPE)
    1101:   mname[0] = 0;

    1103:   PetscOptionsGetString(NULL,NULL,"-log_mpe",mname,PETSC_MAX_PATH_LEN,&flg1);
    1104:   if (flg1) {
    1105:     if (mname[0]) {PetscLogMPEDump(mname);}
    1106:     else          {PetscLogMPEDump(0);}
    1107:   }
    1108: #endif
    1109:   mname[0] = 0;

    1111:   PetscLogViewFromOptions();
    1112:   PetscOptionsGetString(NULL,NULL,"-log_summary",mname,PETSC_MAX_PATH_LEN,&flg1);
    1113:   if (flg1) {
    1114:     PetscViewer viewer;
    1115:     (*PetscHelpPrintf)(PETSC_COMM_WORLD,"\n\n WARNING:   -log_summary is being deprecated; switch to -log_view\n\n\n");
    1116:     if (mname[0]) {
    1117:       PetscViewerASCIIOpen(PETSC_COMM_WORLD,mname,&viewer);
    1118:       PetscLogView(viewer);
    1119:       PetscViewerDestroy(&viewer);
    1120:     } else {
    1121:       viewer = PETSC_VIEWER_STDOUT_WORLD;
    1122:       PetscViewerPushFormat(viewer,PETSC_VIEWER_DEFAULT);
    1123:       PetscLogView(viewer);
    1124:       PetscViewerPopFormat(viewer);
    1125:     }
    1126:   }
    1127:   mname[0] = 0;

    1129:   PetscOptionsGetString(NULL,NULL,"-log_all",mname,PETSC_MAX_PATH_LEN,&flg1);
    1130:   PetscOptionsGetString(NULL,NULL,"-log",mname,PETSC_MAX_PATH_LEN,&flg2);
    1131:   if (flg1 || flg2) {
    1132:     if (mname[0]) PetscLogDump(mname);
    1133:     else          PetscLogDump(0);
    1134:   }
    1135: #endif

    1137:   /*
    1138:      Free all objects registered with PetscObjectRegisterDestroy() such as PETSC_VIEWER_XXX_().
    1139:   */
    1140:   PetscObjectRegisterDestroyAll();

    1142:   PetscStackDestroy();

    1144:   flg1 = PETSC_FALSE;
    1145:   PetscOptionsGetBool(NULL,NULL,"-no_signal_handler",&flg1,NULL);
    1146:   if (!flg1) { PetscPopSignalHandler();}
    1147:   flg1 = PETSC_FALSE;
    1148:   PetscOptionsGetBool(NULL,NULL,"-mpidump",&flg1,NULL);
    1149:   if (flg1) {
    1150:     PetscMPIDump(stdout);
    1151:   }
    1152:   flg1 = PETSC_FALSE;
    1153:   flg2 = PETSC_FALSE;
    1154:   /* preemptive call to avoid listing this option in options table as unused */
    1155:   PetscOptionsHasName(NULL,NULL,"-malloc_dump",&flg1);
    1156:   PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);
    1157:   PetscOptionsGetBool(NULL,NULL,"-options_view",&flg2,NULL);

    1159:   if (flg2) {
    1160:     PetscViewer viewer;
    1161:     PetscViewerCreate(PETSC_COMM_WORLD,&viewer);
    1162:     PetscViewerSetType(viewer,PETSCVIEWERASCII);
    1163:     PetscOptionsView(NULL,viewer);
    1164:     PetscViewerDestroy(&viewer);
    1165:   }

    1167:   /* to prevent PETSc -options_left from warning */
    1168:   PetscOptionsHasName(NULL,NULL,"-nox",&flg1);
    1169:   PetscOptionsHasName(NULL,NULL,"-nox_warning",&flg1);

    1171:   flg3 = PETSC_FALSE; /* default value is required */
    1172:   PetscOptionsGetBool(NULL,NULL,"-options_left",&flg3,&flg1);
    1173:   PetscOptionsAllUsed(NULL,&nopt);
    1174:   if (flg3) {
    1175:     if (!flg2) { /* have not yet printed the options */
    1176:       PetscViewer viewer;
    1177:       PetscViewerCreate(PETSC_COMM_WORLD,&viewer);
    1178:       PetscViewerSetType(viewer,PETSCVIEWERASCII);
    1179:       PetscOptionsView(NULL,viewer);
    1180:       PetscViewerDestroy(&viewer);
    1181:     }
    1182:     if (!nopt) {
    1183:       PetscPrintf(PETSC_COMM_WORLD,"There are no unused options.\n");
    1184:     } else if (nopt == 1) {
    1185:       PetscPrintf(PETSC_COMM_WORLD,"There is one unused database option. It is:\n");
    1186:     } else {
    1187:       PetscPrintf(PETSC_COMM_WORLD,"There are %D unused database options. They are:\n",nopt);
    1188:     }
    1189:   }
    1190: #if defined(PETSC_USE_DEBUG)
    1191:   if (nopt && !flg3 && !flg1) {
    1192:     PetscPrintf(PETSC_COMM_WORLD,"WARNING! There are options you set that were not used!\n");
    1193:     PetscPrintf(PETSC_COMM_WORLD,"WARNING! could be spelling mistake, etc!\n");
    1194:     PetscOptionsLeft(NULL);
    1195:   } else if (nopt && flg3) {
    1196: #else
    1197:   if (nopt && flg3) {
    1198: #endif
    1199:     PetscOptionsLeft(NULL);
    1200:   }

    1202: #if defined(PETSC_HAVE_SAWS)
    1203:   if (!PetscGlobalRank) {
    1204:     PetscStackSAWsViewOff();
    1205:     PetscStackCallSAWs(SAWs_Finalize,());
    1206:   }
    1207: #endif

    1209: #if defined(PETSC_USE_LOG)
    1210:   /*
    1211:        List all objects the user may have forgot to free
    1212:   */
    1213:   if (PetscObjectsLog) {
    1214:     PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);
    1215:     if (flg1) {
    1216:       MPI_Comm local_comm;
    1217:       char     string[64];

    1219:       PetscOptionsGetString(NULL,NULL,"-objects_dump",string,64,NULL);
    1220:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1221:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1222:       PetscObjectsDump(stdout,(string[0] == 'a') ? PETSC_TRUE : PETSC_FALSE);
    1223:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1224:       MPI_Comm_free(&local_comm);
    1225:     }
    1226:   }
    1227: #endif

    1229: #if defined(PETSC_USE_LOG)
    1230:   PetscObjectsCounts    = 0;
    1231:   PetscObjectsMaxCounts = 0;
    1232:   PetscFree(PetscObjects);
    1233: #endif

    1235:   /*
    1236:      Destroy any packages that registered a finalize
    1237:   */
    1238:   PetscRegisterFinalizeAll();

    1240: #if defined(PETSC_USE_LOG)
    1241:   PetscLogDestroy();
    1242: #endif

    1244:   /*
    1245:      Print PetscFunctionLists that have not been properly freed

    1247:   PetscFunctionListPrintAll();
    1248:   */

    1250:   if (petsc_history) {
    1251:     PetscCloseHistoryFile(&petsc_history);
    1252:     petsc_history = 0;
    1253:   }
    1254:   PetscOptionsHelpPrintedDestroy(&PetscOptionsHelpPrintedSingleton);

    1256:   PetscInfoAllow(PETSC_FALSE,NULL);

    1258: #if !defined(PETSC_HAVE_THREADSAFETY)
    1259:   {
    1260:     char fname[PETSC_MAX_PATH_LEN];
    1261:     FILE *fd;
    1262:     int  err;

    1264:     fname[0] = 0;

    1266:     PetscOptionsGetString(NULL,NULL,"-malloc_dump",fname,250,&flg1);
    1267:     flg2 = PETSC_FALSE;
    1268:     PetscOptionsGetBool(NULL,NULL,"-malloc_test",&flg2,NULL);
    1269: #if defined(PETSC_USE_DEBUG)
    1270:     if (PETSC_RUNNING_ON_VALGRIND) flg2 = PETSC_FALSE;
    1271: #else
    1272:     flg2 = PETSC_FALSE;         /* Skip reporting for optimized builds regardless of -malloc_test */
    1273: #endif
    1274:     if (flg1 && fname[0]) {
    1275:       char sname[PETSC_MAX_PATH_LEN];

    1277:       sprintf(sname,"%s_%d",fname,rank);
    1278:       fd   = fopen(sname,"w"); if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",sname);
    1279:       PetscMallocDump(fd);
    1280:       err  = fclose(fd);
    1281:       if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
    1282:     } else if (flg1 || flg2) {
    1283:       MPI_Comm local_comm;

    1285:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1286:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1287:       PetscMallocDump(stdout);
    1288:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1289:       MPI_Comm_free(&local_comm);
    1290:     }
    1291:   }

    1293:   {
    1294:     char fname[PETSC_MAX_PATH_LEN];
    1295:     FILE *fd = NULL;

    1297:     fname[0] = 0;

    1299:     PetscOptionsGetString(NULL,NULL,"-malloc_log",fname,250,&flg1);
    1300:     PetscOptionsHasName(NULL,NULL,"-malloc_log_threshold",&flg2);
    1301:     if (flg1 && fname[0]) {
    1302:       int err;

    1304:       if (!rank) {
    1305:         fd = fopen(fname,"w");
    1306:         if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",fname);
    1307:       }
    1308:       PetscMallocDumpLog(fd);
    1309:       if (fd) {
    1310:         err = fclose(fd);
    1311:         if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
    1312:       }
    1313:     } else if (flg1 || flg2) {
    1314:       PetscMallocDumpLog(stdout);
    1315:     }
    1316:   }
    1317: #endif

    1319:   /*
    1320:      Close any open dynamic libraries
    1321:   */
    1322:   PetscFinalize_DynamicLibraries();

    1324: #if defined(PETSC_HAVE_CUDA)
    1325:   flg  = PETSC_TRUE;
    1326:   PetscOptionsGetBool(NULL,NULL,"-cublas",&flg,NULL);
    1327:   if (flg) {
    1328:     PetscInt p;
    1329:     for (p = 0; p < PetscGlobalSize; ++p) {
    1330:       if (p == PetscGlobalRank) {
    1331:         if (cublasv2handle) {
    1332:           cberr = cublasDestroy(cublasv2handle);CHKERRCUBLAS(cberr);
    1333:         }
    1334:       }
    1335:       MPI_Barrier(PETSC_COMM_WORLD);
    1336:     }
    1337:   }
    1338: #endif

    1340:   /* Can be destroyed only after all the options are used */
    1341:   PetscOptionsDestroyDefault();

    1343:   PetscGlobalArgc = 0;
    1344:   PetscGlobalArgs = 0;

    1346: #if defined(PETSC_USE_REAL___FLOAT128)
    1347:   MPI_Type_free(&MPIU___FLOAT128);
    1348: #if defined(PETSC_HAVE_COMPLEX)
    1349:   MPI_Type_free(&MPIU___COMPLEX128);
    1350: #endif
    1351:   MPI_Op_free(&MPIU_MAX);
    1352:   MPI_Op_free(&MPIU_MIN);
    1353: #endif

    1355: #if defined(PETSC_HAVE_COMPLEX)
    1356: #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
    1357:   MPI_Type_free(&MPIU_C_DOUBLE_COMPLEX);
    1358:   MPI_Type_free(&MPIU_C_COMPLEX);
    1359: #endif
    1360: #endif

    1362: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128)
    1363:   MPI_Op_free(&MPIU_SUM);
    1364: #endif

    1366:   MPI_Type_free(&MPIU_2SCALAR);
    1367: #if defined(PETSC_USE_64BIT_INDICES) || !defined(MPI_2INT)
    1368:   MPI_Type_free(&MPIU_2INT);
    1369: #endif
    1370:   MPI_Op_free(&PetscMaxSum_Op);

    1372:   /*
    1373:      Destroy any known inner MPI_Comm's and attributes pointing to them
    1374:      Note this will not destroy any new communicators the user has created.

    1376:      If all PETSc objects were not destroyed those left over objects will have hanging references to
    1377:      the MPI_Comms that were freed; but that is ok because those PETSc objects will never be used again
    1378:  */
    1379:   {
    1380:     PetscCommCounter *counter;
    1381:     PetscMPIInt      flg;
    1382:     MPI_Comm         icomm;
    1383:     union {MPI_Comm comm; void *ptr;} ucomm;
    1384:     MPI_Attr_get(PETSC_COMM_SELF,Petsc_InnerComm_keyval,&ucomm,&flg);
    1385:     if (flg) {
    1386:       icomm = ucomm.comm;
    1387:       MPI_Attr_get(icomm,Petsc_Counter_keyval,&counter,&flg);
    1388:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");

    1390:       MPI_Attr_delete(PETSC_COMM_SELF,Petsc_InnerComm_keyval);
    1391:       MPI_Attr_delete(icomm,Petsc_Counter_keyval);
    1392:       MPI_Comm_free(&icomm);
    1393:     }
    1394:     MPI_Attr_get(PETSC_COMM_WORLD,Petsc_InnerComm_keyval,&ucomm,&flg);
    1395:     if (flg) {
    1396:       icomm = ucomm.comm;
    1397:       MPI_Attr_get(icomm,Petsc_Counter_keyval,&counter,&flg);
    1398:       if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");

    1400:       MPI_Attr_delete(PETSC_COMM_WORLD,Petsc_InnerComm_keyval);
    1401:       MPI_Attr_delete(icomm,Petsc_Counter_keyval);
    1402:       MPI_Comm_free(&icomm);
    1403:     }
    1404:   }

    1406:   MPI_Keyval_free(&Petsc_Counter_keyval);
    1407:   MPI_Keyval_free(&Petsc_InnerComm_keyval);
    1408:   MPI_Keyval_free(&Petsc_OuterComm_keyval);

    1410:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockOpen);
    1411:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockStdout);
    1412:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockStderr);
    1413:   PetscSpinlockDestroy(&PetscCommSpinLock);

    1415:   if (PetscBeganMPI) {
    1416: #if defined(PETSC_HAVE_MPI_FINALIZED)
    1417:     PetscMPIInt flag;
    1418:     MPI_Finalized(&flag);
    1419:     if (flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"MPI_Finalize() has already been called, even though MPI_Init() was called by PetscInitialize()");
    1420: #endif
    1421:     MPI_Finalize();
    1422:   }
    1423: /*

    1425:      Note: In certain cases PETSC_COMM_WORLD is never MPI_Comm_free()ed because
    1426:    the communicator has some outstanding requests on it. Specifically if the
    1427:    flag PETSC_HAVE_BROKEN_REQUEST_FREE is set (for IBM MPI implementation). See
    1428:    src/vec/utils/vpscat.c. Due to this the memory allocated in PetscCommDuplicate()
    1429:    is never freed as it should be. Thus one may obtain messages of the form
    1430:    [ 1] 8 bytes PetscCommDuplicate() line 645 in src/sys/mpiu.c indicating the
    1431:    memory was not freed.

    1433: */
    1434:   PetscMallocClear();

    1436:   PetscInitializeCalled = PETSC_FALSE;
    1437:   PetscFinalizeCalled   = PETSC_TRUE;
    1438:   PetscFunctionReturn(ierr);
    1439: }

    1441: #if defined(PETSC_MISSING_LAPACK_lsame_)
    1442: PETSC_EXTERN int lsame_(char *a,char *b)
    1443: {
    1444:   if (*a == *b) return 1;
    1445:   if (*a + 32 == *b) return 1;
    1446:   if (*a - 32 == *b) return 1;
    1447:   return 0;
    1448: }
    1449: #endif

    1451: #if defined(PETSC_MISSING_LAPACK_lsame)
    1452: PETSC_EXTERN int lsame(char *a,char *b)
    1453: {
    1454:   if (*a == *b) return 1;
    1455:   if (*a + 32 == *b) return 1;
    1456:   if (*a - 32 == *b) return 1;
    1457:   return 0;
    1458: }
    1459: #endif