PetscFOpen#

Has the first process in the MPI communicator open a file; all others do nothing.

Synopsis#

PetscErrorCode PetscFOpen(MPI_Comm comm, const char name[], const char mode[], FILE **fp)

Logically Collective; No Fortran Support

Input Parameters#

  • comm - the MPI communicator

  • name - the filename

  • mode - the mode for fopen(), usually “w”

Output Parameter#

  • fp - the file pointer

Note#

NULL, “stderr” or “stdout” may be passed in as the filename

See Also#

PetscFClose(), PetscSynchronizedFGets(), PetscSynchronizedPrintf(), PetscSynchronizedFlush(), PetscFPrintf()

Level#

developer

Location#

src/sys/fileio/mpiuopen.c

Examples#

src/ksp/ksp/tutorials/ex43.c
src/ksp/ksp/tutorials/ex49.c
src/sys/classes/random/tutorials/ex2.c

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