[petsc-users] Binary I/O

[Mohamad M. Nasr-Azadani]

Hi everyone,

I think I know the answer to my question, but I was double checking.
When using
PetscViewerBinaryOpen();
It is mentioned that
 "For writing files it only opens the file on processor 0 in the
communicator."

Does that mean when writing a parallel vector to file using VecView(), all
the data from other processors is first sent to processor zero and then
dumped into the file?
If so, that would be a very slow processor for big datasets and large number
of processor?
Any suggestions to speed that process up?

Best,
Mohamad
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