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
Input Parameter#
comm - MPI_Communicator that may share working directory
Output Parameter#
shared -
PETSC_TRUE
orPETSC_FALSE
Options Database Keys#
-shared_working_directory - indicates the directory is known to be shared among the MPI processes
-not_shared_working_directory - indicates the directory is known to be not shared among the MPI processes
Environmental Variables#
PETSC_SHARED_WORKING_DIRECTORY
- indicates the directory is known to be shared among the MPI processesPETSC_NOT_SHARED_WORKING_DIRECTORY
- indicates the directory is known to be not shared among the MPI processes
Notes#
Stores the status as a MPI attribute so it does not have to be redetermined each time.
Assumes that all processors in a communicator either
1) have a common working directory or
2) each has a separate working directory
eventually we can write a fancier one that determines which processors share a common working directory.
This will be very slow on runs with a large number of processors since it requires O(p*p) file opens.
See Also#
PetscGetTmp()
, PetscSharedTmp()
, PetscGetWorkingDirectory()
, PetscGetHomeDirectory()
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages