PetscViewerBinaryOpen

Opens a file for binary input/output.

Synopsis

#include "petsc.h"   
int PetscViewerBinaryOpen(MPI_Comm comm,const char name[],PetscViewerBinaryType type,PetscViewer *binv)

Collective on MPI_Comm

Input Parameters

	comm	- MPI communicator
	name	- name of file
	type	- type of file

   PETSC_BINARY_CREATE - create new file for binary output

   PETSC_BINARY_RDONLY - open existing file for binary input

   PETSC_BINARY_WRONLY - open existing file for binary output

Output Parameter

binv -PetscViewer for binary input/output to use with the specified file

Note

This PetscViewer should be destroyed with PetscViewerDestroy().

For reading files, the filename may begin with ftp:// or http:// and/or end with .gz; in this case file is brought over and uncompressed.

For creating files, if the file name ends with .gz it is automatically compressed when closed.

For writing files it only opens the file on processor 0 in the communicator. For readable files it opens the file on all nodes that have the file. If node 0 does not have the file it generates an error even if other nodes do have the file.

Examples