[mpich-discuss] Why is my quad core slower than cluster

[Garrick Staples]

On Thu, Jul 10, 2008 at 10:15:26PM -0500, zach alleged:
> compiler is gcc on home pc and cluster.
> 
> MPICH configure: 	--prefix=/opt/mpich/intel --enable-sharedlib
> --with-romio --enable-f90modules -c++=icpc -cc=icc -fc=ifort
> -f90=ifort
> 
> on home pc (the slug),
> MPICH2 CC: 	gcc  -O2
> MPICH2 CXX: 	c++  -O2

Nope.  The cluster is using the Intel compiler.  For some apps, the Intel
compiler and mpich2 will definitely be much faster than gcc and mpich1.

-- 
Garrick Staples, GNU/Linux HPCC SysAdmin
University of Southern California

Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html
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