[mpich-discuss] underlying POSIX calls for MPI_File_read_all and MPI_File_write_all

Rob Ross rross at mcs.anl.gov
Mon Aug 2 12:22:15 CDT 2010


Hi Shankha,

It might be helpful to look at how Darshan captures this information:
   http://www.mcs.anl.gov/research/projects/darshan/

Rob

On Aug 2, 2010, at 12:06 PM, shankha wrote:

> Hi,
> Will it be correct to assume that all the ROMIO read write calls
> internally call POSIX read , write in some way or the other.
> I could figure out that MPI_File_write_all calls write by trapping
> MPI_File_write_all. But couldn't figure out the underlying posix call
> for MPI_File_read_all.
>
> Thanks
> Shankha
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