Dear All

I am sure this issue has been discussed before on the forum, but I will 
appreciate your comments.

I have  a package that tries to do parallel file output using MPI_File_Write:

/*  Write to file. */
mpi_errno = MPI_File_write(file, New, 1, sourceType, MPI_STATUS_IGNORE);

With an increasing number of processors, I see that this causes the file output 
to take longer. Can someone suggest a solution?

many thanks
Sanjay

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