[MPICH] MPI_File_read_all

[Rajeev Thakur]

Use whichever works best for you. 
 
Rajeev


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From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Luiz Mendes
Sent: Monday, January 29, 2007 7:54 AM
To: mpich-discuss
Subject: [MPICH] MPI_File_read_all


Hi all,

Is it an advantage use MPI_File_read_all instead of MPI_File_read? Because
in my tests here, the collective version have been slower than non colective
version, around 50%. 

I think it is due to i run programs in one computer only, with local
processes only, is it right? 

Thanks in advance.


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