petsc-3.7.1 2016-05-15
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PetscSharedWorkingDirectory

Determines if all processors in a communicator share a working directory or have different ones.

Synopsis

PetscErrorCode  PetscSharedWorkingDirectory(MPI_Comm comm,PetscBool  *shared)
Collective on MPI_Comm Many br

Input Parameters

comm -MPI_Communicator that may share working directory Many br

Output Parameters

shared -PETSC_TRUE or PETSC_FALSE Many br

Options Database Keys

Environmental Variables

-shared_working_directory- . -not_shared_working_directory Many br

Many br

Notes

Stores the status as a MPI attribute so it does not have Many brto be redetermined each time. Many br

Assumes that all processors in a communicator either Many br1) have a common working directory or Many br2) each has a separate working directory Many breventually we can write a fancier one that determines which processors Many brshare a common working directory. Many br

This will be very slow on runs with a large number of processors since Many brit requires O(p*p) file opens. Many br

Level:developer
Location:
src/sys/fileio/fretrieve.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages

PETSC_SHARED_WORKING_DIRECTORY- . PETSC_NOT_SHARED_WORKING_DIRECTORY Many br