[mpich-discuss] different directories for each process using host file

[Jayesh Krishna]

Hi,
 SMPD is the process manager supported on Windows (MPICH2 install using Windows installers).
 You can find all the options available with mpiexec (SMPD) in the Windows developer's guide (http://www.mcs.anl.gov/research/projects/mpich2/documentation/index.php?s=docs). 

>> Is it possible to use a host file to specify a separate working directory for each process?
  Can you try running your job as an MPMD program (mpiexec -host host1 -dir c:\host1_dir1 test.exe : -host host2 -dir c:\host2_dir2 test.exe )?

>> Should I only use one process for each host and let MPICH2 decide how to distribute threads among the cores or should I use as many processes as I have cores? 
 It is recommended to launch as many processes as there are cores on each host.

Regards,
Jayesh
----- Original Message -----
From: "Zachary Stanko" <zstanko at usgs.gov>
To: mpich-discuss at mcs.anl.gov
Sent: Thursday, August 23, 2012 3:15:18 PM
Subject: [mpich-discuss] different directories for each process using host file

Hello, 

Can you please help me understand the syntax of process managers and how to get a job running. 
If I am using a windows cluster, do I have to use smpd or can I use hydra? 
Is it possible to use a host file to specify a separate working directory for each process? 

host1:4 -dir dir\1 dir\2 dir\3 dir\4 
host2:4 -dir dir\1 dir\2 dir\3 dir\4 
host3:4 -dir dir\1 dir\2 dir\3 dir\4 

or does the -dir command only work as an argument to mpiexec? 

How then do I create multiple processes on multiple hosts each with their own directory? 

Should I only use one process for each host and let MPICH2 decide how to distribute threads among the cores or should I use as many processes as I have cores? 

What would be the default working directory if I just tried to run: 

host1 
host2 
host3 

Thanks 

Zak_______________________________________________
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