[mpich-discuss] MPICH2 in Windows 7: IO issues

[Jayesh Krishna]

Hi,
 You don't have to install any additional packages for MPI-IO to work with MPICH2 on Windows. Please take a look at any document that covers MPI-IO or the MPICH2 test suite (https://svn.mcs.anl.gov/repos/mpi/mpich2/trunk/test/mpi/io/) for help with writing programs that use MPI-IO.
 If it still doesn't work provide us with a sample application that does not work for you.

Regards,
Jayesh

----- Original Message -----
From: "Marcelo Castier" <marcelo.castier at qatar.tamu.edu>
To: "mpich-discuss at mcs.anl.gov" <mpich-discuss at mcs.anl.gov>
Sent: Wednesday, May 23, 2012 7:26:44 AM
Subject: [mpich-discuss] MPICH2 in Windows 7: IO issues





Dear Sirs, 



I have installed MPICH2 in Windows 7 as a tool to develop a Fortran application using the Intel Fortran compiler under Visual Studio. After a few bumps, the installation seems to work right. I can compile parallel code and run using either command lines and the wmpiexe graphical interface. 



My application will be CPU intensive but will read and write very little to files. There will be a few hundred lines of input data and a few hundred lines of formatted output data. Even sequential IO operations would but be OK, even though reading the same input data to all processes would facilitate matters. Anyway, the time to execute IO will be negligible compared to the time to execute the calculations. 



I have found lots of PowerPoint presentations and pdf files in the internet explaining parallel MPI IO. Even copying and pasting these examples, I cannot get a file to be created, filled, and saved. In some cases, the program seems to have a normal termination, but the file is not created. Attempts to use conventional Fortran “open”, “read”, and “write” statements simply crashed. 



Is there any additional library I should install or something else I may have missed, please? 



Thank you very much. 



Marcelo Castier 

Professor of Chemical Engineering 

Texas A&M University at Qatar 


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