[Beowulf] Re: Home beowulf - NIC latencies

[Ole W. Saastad]

Hi,
with all the argument about performance of so called Swiss
Army Knife (SAK) MPIs I have uploaded four runs of the HPCC 
benchmark to the HPCC benchmark web site to show the performance 
of a single cluster with a single SAK MPI running with four different
Interconnects, GigaBit Ethernet (tcp), SCI, Myrinet and InfiniBand.

The results can be found at :

http://icl.cs.utk.edu/hpcc/

Look for the Dell PowerEdge 2650 cluster with 32 CPUs.

The results show that it is possible to have a SAK MPI that 
show acceptable performance for a multiple of interconnects.  

The SAK MPIs are of great value for the application
vendors as they are free from the extra work involved with 
a new MPI implementation for every interconnect. 
In addition an application can be moved without changes 
from one cluster with one interconnect to another cluster 
with yet another interconnect.


-- 
Ole W. Saastad, Dr.Scient. 
Manager Cluster Expert Center
dir. +47 22 62 89 68
fax. +47 22 62 89 51
mob. +47 93 05 74 87
ole at scali.com

Scali - www.scali.com
High Performance Clustering