PetscBinarySynchronizedWrite#
writes to a binary file.
Synopsis#
PetscErrorCode PetscBinarySynchronizedWrite(MPI_Comm comm, int fd, const void *p, PetscInt n, PetscDataType type)
Collective
Input Parameters#
comm - the MPI communicator
fd - the file
n - the number of items to write
p - the buffer
type - the type of items to write (
PETSC_INT
,PETSC_REAL
orPETSC_SCALAR
)
Notes#
Process 0 does a PetscBinaryWrite()
PetscBinarySynchronizedWrite()
uses byte swapping to work on all machines.
Integers are stored on the file as 32 long, regardless of whether
they are stored in the machine as 32 or 64, this means the same
binary file may be read on any machine.
Because byte-swapping may be done on the values in data it cannot be declared const
WARNING#
This is NOT like PetscSynchronizedFPrintf()
! This routine ignores calls on all but process 0,
while PetscSynchronizedFPrintf()
has all processes print their strings in order.
See Also#
PetscBinaryWrite()
, PetscBinaryOpen()
, PetscBinaryClose()
, PetscBinaryRead()
, PetscBinarySynchronizedRead()
,
PetscBinarySynchronizedSeek()
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages