[mpich-discuss] Installing MPICH2-1.0.5p3 in a SMP cluster

[Pavan Balaji]

1.0.5p3 is an ancient version of MPICH2. We are at mpich2-1.1 right now, 
and will release 1.1.1 in a day or two.

With respect to the CPU usage, it's too difficult to diagnose this 
problem with just information on the CPU usage. Can you try profiling 
your application using MPE (and view the profile with Jumpshot). It'll 
show you if there are any unnecessary stalls in MPI (e.g., waiting for 
data to arrive).

  -- Pavan

On 07/16/2009 07:37 AM, Suman Vajjala wrote:
> Hi,
> 
>  I have a strange problem. In one case, I installed mpich2 using gcc and 
> gfortran compilers and I get a CPU usage of 100% when I run parallel 
> codes. In the second case, I installed mpich2 with Intel icc and ifort 
> compilers (64bit, ver-11.1) and I get a cpu usage of 85%. Could it be 
> because of the configuration options used for the mpich2 installation? 
> Do the codes always have to show a 100% cpu usage?
> 
> Thanks and regards
> Suman Vajjala

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji