PVM or MPI essential to run parallel applications on aBeowulf?

[Jason Abate]

> According to the MPICH V1.1.2 Installation Guide:
> "Using shared memory with '-comm=shared' is not supported on LINUX as it
> is on other variations of Unix becaue LINUX does not support the
> standard features of 'mmap.'"

That's true, but given the poor performance I was seeing on 
dual-processor Xeon boxes with the usual p4 device, I decided to go 
ahead and try it.  From the tests that I've run (not exhaustive, but 
not trivial either), it seems to work fine.  I'd be interested to see 
if anyone else has had similar results.

-jason


====================================================================
   Jason Abate abate@ticam.utexas.edu www.ticam.utexas.edu/~abate
     Texas Institute for Computational and Applied Mathematics
     304 SHC, University of Texas at Austin,  Austin, TX 78712
     Work: 512-471-6947  Home: 512-912-1012  Fax: 512-471-8694