Actual source code: bvec2.c
petsc-3.7.1 2016-05-15
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      2: /*
      3:    Implements the sequential vectors.
      4: */

      6: #include <../src/vec/vec/impls/dvecimpl.h>          /*I "petscvec.h" I*/
      7: #include <../src/vec/vec/impls/mpi/pvecimpl.h> /* For VecView_MPI_HDF5 */
      8: #include <petscblaslapack.h>

     10: #if defined(PETSC_HAVE_HDF5)
     11: extern PetscErrorCode VecView_MPI_HDF5(Vec,PetscViewer);
     12: #endif

     16: PetscErrorCode VecPointwiseMax_Seq(Vec win,Vec xin,Vec yin)
     17: {
     19:   PetscInt       n = win->map->n,i;
     20:   PetscScalar    *ww,*xx,*yy; /* cannot make xx or yy const since might be ww */

     23:   VecGetArrayRead(xin,(const PetscScalar**)&xx);
     24:   VecGetArrayRead(yin,(const PetscScalar**)&yy);
     25:   VecGetArray(win,&ww);

     27:   for (i=0; i<n; i++) ww[i] = PetscMax(PetscRealPart(xx[i]),PetscRealPart(yy[i]));

     29:   VecRestoreArrayRead(xin,(const PetscScalar**)&xx);
     30:   VecRestoreArrayRead(yin,(const PetscScalar**)&yy);
     31:   VecRestoreArray(win,&ww);
     32:   PetscLogFlops(n);
     33:   return(0);
     34: }

     38: PetscErrorCode VecPointwiseMin_Seq(Vec win,Vec xin,Vec yin)
     39: {
     41:   PetscInt       n = win->map->n,i;
     42:   PetscScalar    *ww,*xx,*yy; /* cannot make xx or yy const since might be ww */

     45:   VecGetArrayRead(xin,(const PetscScalar**)&xx);
     46:   VecGetArrayRead(yin,(const PetscScalar**)&yy);
     47:   VecGetArray(win,&ww);

     49:   for (i=0; i<n; i++) ww[i] = PetscMin(PetscRealPart(xx[i]),PetscRealPart(yy[i]));

     51:   VecRestoreArrayRead(xin,(const PetscScalar**)&xx);
     52:   VecRestoreArrayRead(yin,(const PetscScalar**)&yy);
     53:   VecRestoreArray(win,&ww);
     54:   PetscLogFlops(n);
     55:   return(0);
     56: }

     60: PetscErrorCode VecPointwiseMaxAbs_Seq(Vec win,Vec xin,Vec yin)
     61: {
     63:   PetscInt       n = win->map->n,i;
     64:   PetscScalar    *ww,*xx,*yy; /* cannot make xx or yy const since might be ww */

     67:   VecGetArrayRead(xin,(const PetscScalar**)&xx);
     68:   VecGetArrayRead(yin,(const PetscScalar**)&yy);
     69:   VecGetArray(win,&ww);

     71:   for (i=0; i<n; i++) ww[i] = PetscMax(PetscAbsScalar(xx[i]),PetscAbsScalar(yy[i]));

     73:   PetscLogFlops(n);
     74:   VecRestoreArrayRead(xin,(const PetscScalar**)&xx);
     75:   VecRestoreArrayRead(yin,(const PetscScalar**)&yy);
     76:   VecRestoreArray(win,&ww);
     77:   return(0);
     78: }

     80: #include <../src/vec/vec/impls/seq/ftn-kernels/fxtimesy.h>

     84: PetscErrorCode VecPointwiseMult_Seq(Vec win,Vec xin,Vec yin)
     85: {
     87:   PetscInt       n = win->map->n,i;
     88:   PetscScalar    *ww,*xx,*yy; /* cannot make xx or yy const since might be ww */

     91:   VecGetArrayRead(xin,(const PetscScalar**)&xx);
     92:   VecGetArrayRead(yin,(const PetscScalar**)&yy);
     93:   VecGetArray(win,&ww);
     94:   if (ww == xx) {
     95:     for (i=0; i<n; i++) ww[i] *= yy[i];
     96:   } else if (ww == yy) {
     97:     for (i=0; i<n; i++) ww[i] *= xx[i];
     98:   } else {
     99: #if defined(PETSC_USE_FORTRAN_KERNEL_XTIMESY)
    100:     fortranxtimesy_(xx,yy,ww,&n);
    101: #else
    102:     for (i=0; i<n; i++) ww[i] = xx[i] * yy[i];
    103: #endif
    104:   }
    105:   VecRestoreArrayRead(xin,(const PetscScalar**)&xx);
    106:   VecRestoreArrayRead(yin,(const PetscScalar**)&yy);
    107:   VecRestoreArray(win,&ww);
    108:   PetscLogFlops(n);
    109:   return(0);
    110: }

    114: PetscErrorCode VecPointwiseDivide_Seq(Vec win,Vec xin,Vec yin)
    115: {
    117:   PetscInt       n = win->map->n,i;
    118:   PetscScalar    *ww,*xx,*yy; /* cannot make xx or yy const since might be ww */

    121:   VecGetArrayRead(xin,(const PetscScalar**)&xx);
    122:   VecGetArrayRead(yin,(const PetscScalar**)&yy);
    123:   VecGetArray(win,&ww);

    125:   for (i=0; i<n; i++) ww[i] = xx[i] / yy[i];

    127:   PetscLogFlops(n);
    128:   VecRestoreArrayRead(xin,(const PetscScalar**)&xx);
    129:   VecRestoreArrayRead(yin,(const PetscScalar**)&yy);
    130:   VecRestoreArray(win,&ww);
    131:   return(0);
    132: }

    136: PetscErrorCode VecSetRandom_Seq(Vec xin,PetscRandom r)
    137: {
    139:   PetscInt       n = xin->map->n,i;
    140:   PetscScalar    *xx;

    143:   VecGetArray(xin,&xx);
    144:   for (i=0; i<n; i++) {PetscRandomGetValue(r,&xx[i]);}
    145:   VecRestoreArray(xin,&xx);
    146:   return(0);
    147: }

    151: PetscErrorCode VecGetSize_Seq(Vec vin,PetscInt *size)
    152: {
    154:   *size = vin->map->n;
    155:   return(0);
    156: }

    162: PetscErrorCode VecConjugate_Seq(Vec xin)
    163: {
    164:   PetscScalar    *x;
    165:   PetscInt       n = xin->map->n;

    169:   VecGetArray(xin,&x);
    170:   while (n-->0) {
    171:     *x = PetscConj(*x);
    172:     x++;
    173:   }
    174:   VecRestoreArray(xin,&x);
    175:   return(0);
    176: }

    180: PetscErrorCode VecResetArray_Seq(Vec vin)
    181: {
    182:   Vec_Seq *v = (Vec_Seq*)vin->data;

    185:   v->array         = v->unplacedarray;
    186:   v->unplacedarray = 0;
    187:   return(0);
    188: }

    192: PetscErrorCode VecCopy_Seq(Vec xin,Vec yin)
    193: {
    194:   PetscScalar       *ya;
    195:   const PetscScalar *xa;
    196:   PetscErrorCode    ierr;

    199:   if (xin != yin) {
    200:     VecGetArrayRead(xin,&xa);
    201:     VecGetArray(yin,&ya);
    202:     PetscMemcpy(ya,xa,xin->map->n*sizeof(PetscScalar));
    203:     VecRestoreArrayRead(xin,&xa);
    204:     VecRestoreArray(yin,&ya);
    205:   }
    206:   return(0);
    207: }

    211: PetscErrorCode VecSwap_Seq(Vec xin,Vec yin)
    212: {
    213:   PetscScalar    *ya, *xa;
    215:   PetscBLASInt   one = 1,bn;

    218:   if (xin != yin) {
    219:     PetscBLASIntCast(xin->map->n,&bn);
    220:     VecGetArray(xin,&xa);
    221:     VecGetArray(yin,&ya);
    222:     PetscStackCallBLAS("BLASswap",BLASswap_(&bn,xa,&one,ya,&one));
    223:     VecRestoreArray(xin,&xa);
    224:     VecRestoreArray(yin,&ya);
    225:   }
    226:   return(0);
    227: }

    229: #include <../src/vec/vec/impls/seq/ftn-kernels/fnorm.h>

    233: PetscErrorCode VecNorm_Seq(Vec xin,NormType type,PetscReal *z)
    234: {
    235:   const PetscScalar *xx;
    236:   PetscErrorCode    ierr;
    237:   PetscInt          n = xin->map->n;
    238:   PetscBLASInt      one = 1, bn;

    241:   PetscBLASIntCast(n,&bn);
    242:   if (type == NORM_2 || type == NORM_FROBENIUS) {
    243:     VecGetArrayRead(xin,&xx);
    244:     *z   = PetscRealPart(BLASdot_(&bn,xx,&one,xx,&one));
    245:     *z   = PetscSqrtReal(*z);
    246:     VecRestoreArrayRead(xin,&xx);
    247:     PetscLogFlops(PetscMax(2.0*n-1,0.0));
    248:   } else if (type == NORM_INFINITY) {
    249:     PetscInt  i;
    250:     PetscReal max = 0.0,tmp;

    252:     VecGetArrayRead(xin,&xx);
    253:     for (i=0; i<n; i++) {
    254:       if ((tmp = PetscAbsScalar(*xx)) > max) max = tmp;
    255:       /* check special case of tmp == NaN */
    256:       if (tmp != tmp) {max = tmp; break;}
    257:       xx++;
    258:     }
    259:     VecRestoreArrayRead(xin,&xx);
    260:     *z   = max;
    261:   } else if (type == NORM_1) {
    262: #if defined(PETSC_USE_COMPLEX)
    263:     PetscReal tmp = 0.0;
    264:     PetscInt    i;
    265: #endif
    266:     VecGetArrayRead(xin,&xx);
    267: #if defined(PETSC_USE_COMPLEX)
    268:     /* BLASasum() returns the nonstandard 1 norm of the 1 norm of the complex entries so we provide a custom loop instead */
    269:     for (i=0; i<n; i++) {
    270:       tmp += PetscAbsScalar(xx[i]);
    271:     }
    272:     *z = tmp;
    273: #else
    274:     PetscStackCallBLAS("BLASasum",*z   = BLASasum_(&bn,xx,&one));
    275: #endif
    276:     VecRestoreArrayRead(xin,&xx);
    277:     PetscLogFlops(PetscMax(n-1.0,0.0));
    278:   } else if (type == NORM_1_AND_2) {
    279:     VecNorm_Seq(xin,NORM_1,z);
    280:     VecNorm_Seq(xin,NORM_2,z+1);
    281:   }
    282:   return(0);
    283: }

    287: PetscErrorCode VecView_Seq_ASCII(Vec xin,PetscViewer viewer)
    288: {
    289:   PetscErrorCode    ierr;
    290:   PetscInt          i,n = xin->map->n;
    291:   const char        *name;
    292:   PetscViewerFormat format;
    293:   const PetscScalar *xv;

    296:   VecGetArrayRead(xin,&xv);
    297:   PetscViewerGetFormat(viewer,&format);
    298:   if (format == PETSC_VIEWER_ASCII_MATLAB) {
    299:     PetscObjectGetName((PetscObject)xin,&name);
    300:     PetscViewerASCIIPrintf(viewer,"%s = [\n",name);
    301:     for (i=0; i<n; i++) {
    302: #if defined(PETSC_USE_COMPLEX)
    303:       if (PetscImaginaryPart(xv[i]) > 0.0) {
    304:         PetscViewerASCIIPrintf(viewer,"%18.16e + %18.16ei\n",(double)PetscRealPart(xv[i]),(double)PetscImaginaryPart(xv[i]));
    305:       } else if (PetscImaginaryPart(xv[i]) < 0.0) {
    306:         PetscViewerASCIIPrintf(viewer,"%18.16e - %18.16ei\n",(double)PetscRealPart(xv[i]),-(double)PetscImaginaryPart(xv[i]));
    307:       } else {
    308:         PetscViewerASCIIPrintf(viewer,"%18.16e\n",(double)PetscRealPart(xv[i]));
    309:       }
    310: #else
    311:       PetscViewerASCIIPrintf(viewer,"%18.16e\n",(double) xv[i]);
    312: #endif
    313:     }
    314:     PetscViewerASCIIPrintf(viewer,"];\n");
    315:   } else if (format == PETSC_VIEWER_ASCII_SYMMODU) {
    316:     for (i=0; i<n; i++) {
    317: #if defined(PETSC_USE_COMPLEX)
    318:       PetscViewerASCIIPrintf(viewer,"%18.16e %18.16e\n",(double)PetscRealPart(xv[i]),(double)PetscImaginaryPart(xv[i]));
    319: #else
    320:       PetscViewerASCIIPrintf(viewer,"%18.16e\n",(double)xv[i]);
    321: #endif
    322:     }
    323:   } else if (format == PETSC_VIEWER_ASCII_VTK || format == PETSC_VIEWER_ASCII_VTK_CELL) {
    324:     /*
    325:        state 0: No header has been output
    326:        state 1: Only POINT_DATA has been output
    327:        state 2: Only CELL_DATA has been output
    328:        state 3: Output both, POINT_DATA last
    329:        state 4: Output both, CELL_DATA last
    330:     */
    331:     static PetscInt stateId = -1;
    332:     int outputState = 0;
    333:     PetscBool  hasState;
    334:     int doOutput = 0;
    335:     PetscInt bs, b;

    337:     if (stateId < 0) {
    338:       PetscObjectComposedDataRegister(&stateId);
    339:     }
    340:     PetscObjectComposedDataGetInt((PetscObject) viewer, stateId, outputState, hasState);
    341:     if (!hasState) outputState = 0;
    342:     PetscObjectGetName((PetscObject) xin, &name);
    343:     VecGetBlockSize(xin, &bs);
    344:     if ((bs < 1) || (bs > 3)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "VTK can only handle 3D objects, but vector dimension is %d", bs);
    345:     if (format == PETSC_VIEWER_ASCII_VTK) {
    346:       if (outputState == 0) {
    347:         outputState = 1;
    348:         doOutput = 1;
    349:       } else if (outputState == 1) doOutput = 0;
    350:       else if (outputState == 2) {
    351:         outputState = 3;
    352:         doOutput = 1;
    353:       } else if (outputState == 3) doOutput = 0;
    354:       else if (outputState == 4) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "Tried to output POINT_DATA again after intervening CELL_DATA");

    356:       if (doOutput) {
    357:         PetscViewerASCIIPrintf(viewer, "POINT_DATA %d\n", n/bs);
    358:       }
    359:     } else {
    360:       if (outputState == 0) {
    361:         outputState = 2;
    362:         doOutput = 1;
    363:       } else if (outputState == 1) {
    364:         outputState = 4;
    365:         doOutput = 1;
    366:       } else if (outputState == 2) doOutput = 0;
    367:       else if (outputState == 3) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "Tried to output CELL_DATA again after intervening POINT_DATA");
    368:       else if (outputState == 4) doOutput = 0;

    370:       if (doOutput) {
    371:         PetscViewerASCIIPrintf(viewer, "CELL_DATA %d\n", n);
    372:       }
    373:     }
    374:     PetscObjectComposedDataSetInt((PetscObject) viewer, stateId, outputState);
    375:     if (name) {
    376:       if (bs == 3) {
    377:         PetscViewerASCIIPrintf(viewer, "VECTORS %s double\n", name);
    378:       } else {
    379:         PetscViewerASCIIPrintf(viewer, "SCALARS %s double %d\n", name, bs);
    380:       }
    381:     } else {
    382:       PetscViewerASCIIPrintf(viewer, "SCALARS scalars double %d\n", bs);
    383:     }
    384:     if (bs != 3) {
    385:       PetscViewerASCIIPrintf(viewer, "LOOKUP_TABLE default\n");
    386:     }
    387:     for (i=0; i<n/bs; i++) {
    388:       for (b=0; b<bs; b++) {
    389:         if (b > 0) {
    390:           PetscViewerASCIIPrintf(viewer," ");
    391:         }
    392: #if !defined(PETSC_USE_COMPLEX)
    393:         PetscViewerASCIIPrintf(viewer,"%g",(double)xv[i*bs+b]);
    394: #endif
    395:       }
    396:       PetscViewerASCIIPrintf(viewer,"\n");
    397:     }
    398:   } else if (format == PETSC_VIEWER_ASCII_VTK_COORDS) {
    399:     PetscInt bs, b;

    401:     VecGetBlockSize(xin, &bs);
    402:     if ((bs < 1) || (bs > 3)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "VTK can only handle 3D objects, but vector dimension is %d", bs);
    403:     for (i=0; i<n/bs; i++) {
    404:       for (b=0; b<bs; b++) {
    405:         if (b > 0) {
    406:           PetscViewerASCIIPrintf(viewer," ");
    407:         }
    408: #if !defined(PETSC_USE_COMPLEX)
    409:         PetscViewerASCIIPrintf(viewer,"%g",(double)xv[i*bs+b]);
    410: #endif
    411:       }
    412:       for (b=bs; b<3; b++) {
    413:         PetscViewerASCIIPrintf(viewer," 0.0");
    414:       }
    415:       PetscViewerASCIIPrintf(viewer,"\n");
    416:     }
    417:   } else if (format == PETSC_VIEWER_ASCII_PCICE) {
    418:     PetscInt bs, b;

    420:     VecGetBlockSize(xin, &bs);
    421:     if ((bs < 1) || (bs > 3)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "PCICE can only handle up to 3D objects, but vector dimension is %d", bs);
    422:     PetscViewerASCIIPrintf(viewer,"%D\n", xin->map->N/bs);
    423:     for (i=0; i<n/bs; i++) {
    424:       PetscViewerASCIIPrintf(viewer,"%7D   ", i+1);
    425:       for (b=0; b<bs; b++) {
    426:         if (b > 0) {
    427:           PetscViewerASCIIPrintf(viewer," ");
    428:         }
    429: #if !defined(PETSC_USE_COMPLEX)
    430:         PetscViewerASCIIPrintf(viewer,"% 12.5E",(double)xv[i*bs+b]);
    431: #endif
    432:       }
    433:       PetscViewerASCIIPrintf(viewer,"\n");
    434:     }
    435:   } else if (format == PETSC_VIEWER_ASCII_INFO || format == PETSC_VIEWER_ASCII_INFO_DETAIL) {
    436:     /* No info */
    437:   } else {
    438:     for (i=0; i<n; i++) {
    439:       if (format == PETSC_VIEWER_ASCII_INDEX) {
    440:         PetscViewerASCIIPrintf(viewer,"%D: ",i);
    441:       }
    442: #if defined(PETSC_USE_COMPLEX)
    443:       if (PetscImaginaryPart(xv[i]) > 0.0) {
    444:         PetscViewerASCIIPrintf(viewer,"%g + %g i\n",(double)PetscRealPart(xv[i]),(double)PetscImaginaryPart(xv[i]));
    445:       } else if (PetscImaginaryPart(xv[i]) < 0.0) {
    446:         PetscViewerASCIIPrintf(viewer,"%g - %g i\n",(double)PetscRealPart(xv[i]),-(double)PetscImaginaryPart(xv[i]));
    447:       } else {
    448:         PetscViewerASCIIPrintf(viewer,"%g\n",(double)PetscRealPart(xv[i]));
    449:       }
    450: #else
    451:       PetscViewerASCIIPrintf(viewer,"%g\n",(double)xv[i]);
    452: #endif
    453:     }
    454:   }
    455:   PetscViewerFlush(viewer);
    456:   VecRestoreArrayRead(xin,&xv);
    457:   return(0);
    458: }

    460: #include <petscdraw.h>
    463: PetscErrorCode VecView_Seq_Draw_LG(Vec xin,PetscViewer v)
    464: {
    465:   PetscDraw         draw;
    466:   PetscBool         isnull;
    467:   PetscDrawLG       lg;
    468:   PetscErrorCode    ierr;
    469:   PetscInt          i,c,bs = PetscAbs(xin->map->bs),n = xin->map->n/bs;
    470:   const PetscScalar *xv;
    471:   PetscReal         *xx,*yy;
    472:   int               colors[] = {PETSC_DRAW_RED};

    475:   PetscViewerDrawGetDraw(v,0,&draw);
    476:   PetscDrawIsNull(draw,&isnull);
    477:   if (isnull) return(0);

    479:   PetscMalloc2(n,&xx,n,&yy);
    480:   VecGetArrayRead(xin,&xv);
    481:   for (c=0; c<bs; c++) {
    482:     PetscViewerDrawGetDrawLG(v,c,&lg);
    483:     PetscDrawLGReset(lg);
    484:     PetscDrawLGSetDimension(lg,1);
    485:     PetscDrawLGSetColors(lg,colors);
    486:     for (i=0; i<n; i++) {
    487:       xx[i] = (PetscReal)i;
    488:       yy[i] = PetscRealPart(xv[c + i*bs]);
    489:     }
    490:     PetscDrawLGAddPoints(lg,n,&xx,&yy);
    491:     PetscDrawLGDraw(lg);
    492:     PetscDrawLGSave(lg);
    493:   }
    494:   VecRestoreArrayRead(xin,&xv);
    495:   PetscFree2(xx,yy);
    496:   return(0);
    497: }

    501: PetscErrorCode VecView_Seq_Draw(Vec xin,PetscViewer v)
    502: {
    503:   PetscErrorCode    ierr;
    504:   PetscDraw         draw;
    505:   PetscBool         isnull;

    508:   PetscViewerDrawGetDraw(v,0,&draw);
    509:   PetscDrawIsNull(draw,&isnull);
    510:   if (isnull) return(0);
    511:   PetscViewerPushFormat(v,PETSC_VIEWER_DRAW_LG);
    512:   VecView_Seq_Draw_LG(xin,v);
    513:   PetscViewerPopFormat(v);
    514:   return(0);
    515: }

    519: PetscErrorCode VecView_Seq_Binary(Vec xin,PetscViewer viewer)
    520: {
    521:   PetscErrorCode    ierr;
    522:   int               fdes;
    523:   PetscInt          n = xin->map->n,classid=VEC_FILE_CLASSID;
    524:   FILE              *file;
    525:   const PetscScalar *xv;
    526: #if defined(PETSC_HAVE_MPIIO)
    527:   PetscBool         isMPIIO;
    528: #endif
    529:   PetscBool         skipHeader;
    530:   PetscViewerFormat format;

    533:   /* Write vector header */
    534:   PetscViewerBinaryGetSkipHeader(viewer,&skipHeader);
    535:   if (!skipHeader) {
    536:     PetscViewerBinaryWrite(viewer,&classid,1,PETSC_INT,PETSC_FALSE);
    537:     PetscViewerBinaryWrite(viewer,&n,1,PETSC_INT,PETSC_FALSE);
    538:   }

    540:   /* Write vector contents */
    541: #if defined(PETSC_HAVE_MPIIO)
    542:   PetscViewerBinaryGetUseMPIIO(viewer,&isMPIIO);
    543:   if (!isMPIIO) {
    544: #endif
    545:     PetscViewerBinaryGetDescriptor(viewer,&fdes);
    546:     VecGetArrayRead(xin,&xv);
    547:     PetscBinaryWrite(fdes,(void*)xv,n,PETSC_SCALAR,PETSC_FALSE);
    548:     VecRestoreArrayRead(xin,&xv);
    549:     PetscViewerGetFormat(viewer,&format);
    550:     if (format == PETSC_VIEWER_BINARY_MATLAB) {
    551:       MPI_Comm   comm;
    552:       FILE       *info;
    553:       const char *name;

    555:       PetscObjectGetName((PetscObject)xin,&name);
    556:       PetscObjectGetComm((PetscObject)viewer,&comm);
    557:       PetscViewerBinaryGetInfoPointer(viewer,&info);
    558:       PetscFPrintf(comm,info,"#--- begin code written by PetscViewerBinary for MATLAB format ---#\n");
    559:       PetscFPrintf(comm,info,"#$$ Set.%s = PetscBinaryRead(fd);\n",name);
    560:       PetscFPrintf(comm,info,"#--- end code written by PetscViewerBinary for MATLAB format ---#\n\n");
    561:     }
    562: #if defined(PETSC_HAVE_MPIIO)
    563:   } else {
    564:     MPI_Offset   off;
    565:     MPI_File     mfdes;
    566:     PetscMPIInt  lsize;

    568:     PetscMPIIntCast(n,&lsize);
    569:     PetscViewerBinaryGetMPIIODescriptor(viewer,&mfdes);
    570:     PetscViewerBinaryGetMPIIOOffset(viewer,&off);
    571:     MPI_File_set_view(mfdes,off,MPIU_SCALAR,MPIU_SCALAR,(char*)"native",MPI_INFO_NULL);
    572:     VecGetArrayRead(xin,&xv);
    573:     MPIU_File_write_all(mfdes,(void*)xv,lsize,MPIU_SCALAR,MPI_STATUS_IGNORE);
    574:     VecRestoreArrayRead(xin,&xv);
    575:     PetscViewerBinaryAddMPIIOOffset(viewer,n*sizeof(PetscScalar));
    576:   }
    577: #endif

    579:   PetscViewerBinaryGetInfoPointer(viewer,&file);
    580:   if (file) {
    581:     if (((PetscObject)xin)->prefix) {
    582:       PetscFPrintf(PETSC_COMM_SELF,file,"-%svecload_block_size %D\n",((PetscObject)xin)->prefix,PetscAbs(xin->map->bs));
    583:     } else {
    584:       PetscFPrintf(PETSC_COMM_SELF,file,"-vecload_block_size %D\n",PetscAbs(xin->map->bs));
    585:     }
    586:   }
    587:   return(0);
    588: }

    590: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    591: #include <petscmatlab.h>
    592: #include <mat.h>   /* MATLAB include file */
    595: PetscErrorCode VecView_Seq_Matlab(Vec vec,PetscViewer viewer)
    596: {
    597:   PetscErrorCode    ierr;
    598:   PetscInt          n;
    599:   const PetscScalar *array;

    602:   VecGetLocalSize(vec,&n);
    603:   PetscObjectName((PetscObject)vec);
    604:   VecGetArrayRead(vec,&array);
    605:   PetscViewerMatlabPutArray(viewer,n,1,array,((PetscObject)vec)->name);
    606:   VecRestoreArrayRead(vec,&array);
    607:   return(0);
    608: }
    609: #endif

    613: PETSC_EXTERN PetscErrorCode VecView_Seq(Vec xin,PetscViewer viewer)
    614: {
    616:   PetscBool      isdraw,iascii,issocket,isbinary;
    617: #if defined(PETSC_HAVE_MATHEMATICA)
    618:   PetscBool      ismathematica;
    619: #endif
    620: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    621:   PetscBool      ismatlab;
    622: #endif
    623: #if defined(PETSC_HAVE_HDF5)
    624:   PetscBool      ishdf5;
    625: #endif

    628:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw);
    629:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
    630:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERSOCKET,&issocket);
    631:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);
    632: #if defined(PETSC_HAVE_MATHEMATICA)
    633:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERMATHEMATICA,&ismathematica);
    634: #endif
    635: #if defined(PETSC_HAVE_HDF5)
    636:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERHDF5,&ishdf5);
    637: #endif
    638: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    639:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERMATLAB,&ismatlab);
    640: #endif

    642:   if (isdraw) {
    643:     VecView_Seq_Draw(xin,viewer);
    644:   } else if (iascii) {
    645:     VecView_Seq_ASCII(xin,viewer);
    646:   } else if (isbinary) {
    647:     VecView_Seq_Binary(xin,viewer);
    648: #if defined(PETSC_HAVE_MATHEMATICA)
    649:   } else if (ismathematica) {
    650:     PetscViewerMathematicaPutVector(viewer,xin);
    651: #endif
    652: #if defined(PETSC_HAVE_HDF5)
    653:   } else if (ishdf5) {
    654:     VecView_MPI_HDF5(xin,viewer); /* Reusing VecView_MPI_HDF5 ... don't want code duplication*/
    655: #endif
    656: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    657:   } else if (ismatlab) {
    658:     VecView_Seq_Matlab(xin,viewer);
    659: #endif
    660:   }
    661:   return(0);
    662: }

    666: PetscErrorCode VecGetValues_Seq(Vec xin,PetscInt ni,const PetscInt ix[],PetscScalar y[])
    667: {
    668:   const PetscScalar *xx;
    669:   PetscInt          i;
    670:   PetscErrorCode    ierr;

    673:   VecGetArrayRead(xin,&xx);
    674:   for (i=0; i<ni; i++) {
    675:     if (xin->stash.ignorenegidx && ix[i] < 0) continue;
    676: #if defined(PETSC_USE_DEBUG)
    677:     if (ix[i] < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D cannot be negative",ix[i]);
    678:     if (ix[i] >= xin->map->n) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D to large maximum allowed %D",ix[i],xin->map->n);
    679: #endif
    680:     y[i] = xx[ix[i]];
    681:   }
    682:   VecRestoreArrayRead(xin,&xx);
    683:   return(0);
    684: }

    688: PetscErrorCode VecSetValues_Seq(Vec xin,PetscInt ni,const PetscInt ix[],const PetscScalar y[],InsertMode m)
    689: {
    690:   PetscScalar    *xx;
    691:   PetscInt       i;

    695:   VecGetArray(xin,&xx);
    696:   if (m == INSERT_VALUES) {
    697:     for (i=0; i<ni; i++) {
    698:       if (xin->stash.ignorenegidx && ix[i] < 0) continue;
    699: #if defined(PETSC_USE_DEBUG)
    700:       if (ix[i] < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D cannot be negative",ix[i]);
    701:       if (ix[i] >= xin->map->n) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D maximum %D",ix[i],xin->map->n);
    702: #endif
    703:       xx[ix[i]] = y[i];
    704:     }
    705:   } else {
    706:     for (i=0; i<ni; i++) {
    707:       if (xin->stash.ignorenegidx && ix[i] < 0) continue;
    708: #if defined(PETSC_USE_DEBUG)
    709:       if (ix[i] < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D cannot be negative",ix[i]);
    710:       if (ix[i] >= xin->map->n) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D maximum %D",ix[i],xin->map->n);
    711: #endif
    712:       xx[ix[i]] += y[i];
    713:     }
    714:   }
    715:   VecRestoreArray(xin,&xx);
    716:   return(0);
    717: }

    721: PetscErrorCode VecSetValuesBlocked_Seq(Vec xin,PetscInt ni,const PetscInt ix[],const PetscScalar yin[],InsertMode m)
    722: {
    723:   PetscScalar    *xx,*y = (PetscScalar*)yin;
    724:   PetscInt       i,bs,start,j;

    727:   /*
    728:        For optimization could treat bs = 2, 3, 4, 5 as special cases with loop unrolling
    729:   */
    731:   VecGetBlockSize(xin,&bs);
    732:   VecGetArray(xin,&xx);
    733:   if (m == INSERT_VALUES) {
    734:     for (i=0; i<ni; i++) {
    735:       start = bs*ix[i];
    736:       if (start < 0) continue;
    737: #if defined(PETSC_USE_DEBUG)
    738:       if (start >= xin->map->n) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D maximum %D",start,xin->map->n);
    739: #endif
    740:       for (j=0; j<bs; j++) xx[start+j] = y[j];
    741:       y += bs;
    742:     }
    743:   } else {
    744:     for (i=0; i<ni; i++) {
    745:       start = bs*ix[i];
    746:       if (start < 0) continue;
    747: #if defined(PETSC_USE_DEBUG)
    748:       if (start >= xin->map->n) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D maximum %D",start,xin->map->n);
    749: #endif
    750:       for (j=0; j<bs; j++) xx[start+j] += y[j];
    751:       y += bs;
    752:     }
    753:   }
    754:   VecRestoreArray(xin,&xx);
    755:   return(0);
    756: }

    760: PetscErrorCode VecDestroy_Seq(Vec v)
    761: {
    762:   Vec_Seq        *vs = (Vec_Seq*)v->data;

    766: #if defined(PETSC_USE_LOG)
    767:   PetscLogObjectState((PetscObject)v,"Length=%D",v->map->n);
    768: #endif
    769:   PetscFree(vs->array_allocated);
    770:   PetscFree(v->data);
    771:   return(0);
    772: }

    776: PetscErrorCode VecSetOption_Seq(Vec v,VecOption op,PetscBool flag)
    777: {
    779:   if (op == VEC_IGNORE_NEGATIVE_INDICES) v->stash.ignorenegidx = flag;
    780:   return(0);
    781: }

    785: PetscErrorCode VecDuplicate_Seq(Vec win,Vec *V)
    786: {

    790:   VecCreate(PetscObjectComm((PetscObject)win),V);
    791:   PetscObjectSetPrecision((PetscObject)*V,((PetscObject)win)->precision);
    792:   VecSetSizes(*V,win->map->n,win->map->n);
    793:   VecSetType(*V,((PetscObject)win)->type_name);
    794:   PetscLayoutReference(win->map,&(*V)->map);
    795:   PetscObjectListDuplicate(((PetscObject)win)->olist,&((PetscObject)(*V))->olist);
    796:   PetscFunctionListDuplicate(((PetscObject)win)->qlist,&((PetscObject)(*V))->qlist);

    798:   (*V)->ops->view          = win->ops->view;
    799:   (*V)->stash.ignorenegidx = win->stash.ignorenegidx;
    800:   return(0);
    801: }

    803: static struct _VecOps DvOps = {VecDuplicate_Seq, /* 1 */
    804:                                VecDuplicateVecs_Default,
    805:                                VecDestroyVecs_Default,
    806:                                VecDot_Seq,
    807:                                VecMDot_Seq,
    808:                                VecNorm_Seq,
    809:                                VecTDot_Seq,
    810:                                VecMTDot_Seq,
    811:                                VecScale_Seq,
    812:                                VecCopy_Seq, /* 10 */
    813:                                VecSet_Seq,
    814:                                VecSwap_Seq,
    815:                                VecAXPY_Seq,
    816:                                VecAXPBY_Seq,
    817:                                VecMAXPY_Seq,
    818:                                VecAYPX_Seq,
    819:                                VecWAXPY_Seq,
    820:                                VecAXPBYPCZ_Seq,
    821:                                VecPointwiseMult_Seq,
    822:                                VecPointwiseDivide_Seq,
    823:                                VecSetValues_Seq, /* 20 */
    824:                                0,0,
    825:                                0,
    826:                                VecGetSize_Seq,
    827:                                VecGetSize_Seq,
    828:                                0,
    829:                                VecMax_Seq,
    830:                                VecMin_Seq,
    831:                                VecSetRandom_Seq,
    832:                                VecSetOption_Seq, /* 30 */
    833:                                VecSetValuesBlocked_Seq,
    834:                                VecDestroy_Seq,
    835:                                VecView_Seq,
    836:                                VecPlaceArray_Seq,
    837:                                VecReplaceArray_Seq,
    838:                                VecDot_Seq,
    839:                                VecTDot_Seq,
    840:                                VecNorm_Seq,
    841:                                VecMDot_Seq,
    842:                                VecMTDot_Seq, /* 40 */
    843:                                VecLoad_Default,
    844:                                VecReciprocal_Default,
    845:                                VecConjugate_Seq,
    846:                                0,
    847:                                0,
    848:                                VecResetArray_Seq,
    849:                                0,
    850:                                VecMaxPointwiseDivide_Seq,
    851:                                VecPointwiseMax_Seq,
    852:                                VecPointwiseMaxAbs_Seq,
    853:                                VecPointwiseMin_Seq,
    854:                                VecGetValues_Seq,
    855:                                0,
    856:                                0,
    857:                                0,
    858:                                0,
    859:                                0,
    860:                                0,
    861:                                VecStrideGather_Default,
    862:                                VecStrideScatter_Default,
    863:                                0,
    864:                                0,
    865:                                0,
    866:                                0,
    867:                                0,
    868:                                VecStrideSubSetGather_Default,
    869:                                VecStrideSubSetScatter_Default,
    870:                                0,
    871:                                0
    872: };

    875: /*
    876:       This is called by VecCreate_Seq() (i.e. VecCreateSeq()) and VecCreateSeqWithArray()
    877: */
    880: PetscErrorCode VecCreate_Seq_Private(Vec v,const PetscScalar array[])
    881: {
    882:   Vec_Seq        *s;

    886:   PetscNewLog(v,&s);
    887:   PetscMemcpy(v->ops,&DvOps,sizeof(DvOps));

    889:   v->data            = (void*)s;
    890:   v->petscnative     = PETSC_TRUE;
    891:   s->array           = (PetscScalar*)array;
    892:   s->array_allocated = 0;

    894:   PetscLayoutSetUp(v->map);
    895:   PetscObjectChangeTypeName((PetscObject)v,VECSEQ);
    896: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    897:   PetscObjectComposeFunction((PetscObject)v,"PetscMatlabEnginePut_C",VecMatlabEnginePut_Default);
    898:   PetscObjectComposeFunction((PetscObject)v,"PetscMatlabEngineGet_C",VecMatlabEngineGet_Default);
    899: #endif
    900: #if defined(PETSC_USE_MIXED_PRECISION)
    901:   ((PetscObject)v)->precision = (PetscPrecision)sizeof(PetscReal);
    902: #endif
    903:   return(0);
    904: }

    908: /*@C
    909:    VecCreateSeqWithArray - Creates a standard,sequential array-style vector,
    910:    where the user provides the array space to store the vector values.

    912:    Collective on MPI_Comm

    914:    Input Parameter:
    915: +  comm - the communicator, should be PETSC_COMM_SELF
    916: .  bs - the block size
    917: .  n - the vector length
    918: -  array - memory where the vector elements are to be stored.

    920:    Output Parameter:
    921: .  V - the vector

    923:    Notes:
    924:    Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the
    925:    same type as an existing vector.

    927:    If the user-provided array is NULL, then VecPlaceArray() can be used
    928:    at a later stage to SET the array for storing the vector values.

    930:    PETSc does NOT free the array when the vector is destroyed via VecDestroy().
    931:    The user should not free the array until the vector is destroyed.

    933:    Level: intermediate

    935:    Concepts: vectors^creating with array

    937: .seealso: VecCreateMPIWithArray(), VecCreate(), VecDuplicate(), VecDuplicateVecs(),
    938:           VecCreateGhost(), VecCreateSeq(), VecPlaceArray()
    939: @*/
    940: PetscErrorCode  VecCreateSeqWithArray(MPI_Comm comm,PetscInt bs,PetscInt n,const PetscScalar array[],Vec *V)
    941: {
    943:   PetscMPIInt    size;

    946:   VecCreate(comm,V);
    947:   VecSetSizes(*V,n,n);
    948:   VecSetBlockSize(*V,bs);
    949:   MPI_Comm_size(comm,&size);
    950:   if (size > 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot create VECSEQ on more than one process");
    951:   VecCreate_Seq_Private(*V,array);
    952:   return(0);
    953: }