[Fwd: Benchmarking Beowulf]

[Josip Loncaric]

Shu Xiao wrote:
> 
> Hi,
> 
> Any one knows what is the peak floating point performance for Pentinum II?
> (in Mflop/s). Please help.

Our Pentium II 400 MHz CPUs reach 298 Mflop/s using ATLAS
(http://www.icase.edu/coral/Jan12.99.html).
ATLAS results represent reachable peak performance but most codes cannot
run that fast.  (Sca)LAPACK numbers reach about 165 Mflop/s (DGEMM), but
even that is not typical.  A complete parallel code (such as a CFD
solver) might average 45 Mflop/s/CPU, which is pretty good.

Sincerely,
Josip

Some links:

ATLAS:       http://www.netlib.org/atlas/
ScaLAPACK:   http://netlib2.cs.utk.edu/scalapack/index.html

-- 
Dr. Josip Loncaric, Senior Staff Scientist        mailto:josip@icase.edu
ICASE, Mail Stop 132C                       http://www.icase.edu/~josip/
NASA Langley Research Center             mailto:j.loncaric@larc.nasa.gov
Hampton, VA 23681-2199, USA    Tel. +1 757 864-2192  Fax +1 757 864-6134