Hello, Rob, and Open MPI users, Thank you for your advice. I understand that current Open MPI 1.5.3 Win-32bit binary distributed from this site don't support MPI-IO on NTFS.
I try to check this problem with using other code. The code is the following code: http://www.mcs.anl.gov/research/projects/mpi/usingmpi2/examples/moreio/subarray_c.htm First I insert the following lines after "MPI_Init( &argc, &argv );" line. m = 20; n = 30; Of course, the name of output file is ... "/pfs/datafile"-->"datafile". It correctly works on Open MPI 1.4.1 on Linux Ubunts 10.04 LTS. I found "datafile" after run. However, It doesn't work correctly on Open MPI 1.5.3 32bit binary, Windows 7 32bit SP1. I can't find "datafile" Sincerely yours, Satoi 2011/4/4 Rob Latham <r...@mcs.anl.gov>: > On Sat, Apr 02, 2011 at 09:07:55PM +0900, Satoi Ogawa wrote: >> Dear Developers and Users, >> >> Thank you for your development of Open MPI. >> >> I want to use Open MPI 1.5.3 on Windows 7 32bit, one PC. >> But there is something wrong with the part using MPI-2 I/O functions >> in my program. >> It correctly worked on Open MPI on Linux. >> I would very much appreciate any information you could send me. >> I can't find it in Open MPI User's Mailing List Archives. > > you probably need to configure OpenMPI so that ROMIO (the MPI-IO > library) is built with "NTFS" support. > > ==rob ---- Satoi Ogawa <sa...@chimons.org>