Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: [OMPI users] MPI_File_Write
From: Kharche, Sanjay (Sanjay.Kharche_at_[hidden])
Date: 2011-11-16 10:52:05

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