[mpich-discuss] File I/O doesn't work with mapped network drive

Jayesh Krishna jayesh at mcs.anl.gov
Mon Jan 26 09:08:45 CST 2009

 Please use the "-map" option available with mpiexec to map any network
drive that you use in your MPI job (eg: mpiexec -n 2 -map
 Let us know if it works for you.


From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of ??????????
Sent: Sunday, January 25, 2009 10:39 AM
To: mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] File I/O doesn't work with mapped network drive

Good day.
I've developed MPI (MPICH 1.0.8) application working with file that is
located on mapped network drive (letter z:, for example, z:\my.bin). 
The drive Z was mapped by Windows Explorer and it's avalaible for all
My application (run with mpiexec -n X(1,2,3...) "c:\my_app.exe", it has
copy on all nodes) get an error when it attemps to open this file from any
node (no such file or directory). If i disconnect mapped network drive in
Windows and use -map option, it works well, but there are some reasons
because of I can't use this approach.
Tell me please, why can't SMPD find files are located on mapped network
drive, mounted by Windows (Explorer)?

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