[mvapich-discuss] problem with mpirun

[LEI CHAI]

Hi Hossein,

On our Solaris cluster (dual cpu, single-core), it only takes a few milliseconds to setup connections among 16 processes. Unfortunately we don't have quad-core solaris machines. So does the startup latency suddenly jump after a threshold or does it grow gradually? We will also take a closer look at it.

Thanks,
Lei


----- Original Message -----
From: Hossein Pourreza <pourreza at cs.umanitoba.ca>
Date: Wednesday, June 20, 2007 7:32 am
Subject: [mvapich-discuss] problem with mpirun

> Hi,
> 
> We have a small cluster of 10 machines (4 cores each) running 
> Solaris and 
> MVAPICH2-0.9.8. When I try
> to run an MPI application using mpirun (or mpiexec) it takes a long 
> time to
> setup the virtual machine and spread the processes around (mpirun -
> np 40 takes
> about several minutes). I am wondering if this is normal or I am 
> missing 
> something here.
> 
> Thanks
> Hossein
> -- 
> Hossein Pourreza                                 
> 	mail:<pourreza at cs.umanitoba.ca>    
> Department of Computer Science        	URL: 
> http://www.cs.umanitoba.ca/~pourrezaUniversity of Manitoba          
>        	Phone: 204-488-5611            
> Winnipeg, Manitoba, Canada R3T 2N2
> 
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