[Beowulf] Re: Home beowulf - NIC latencies

Ole W. Saastad ole at scali.com
Fri Feb 18 05:20:04 EST 2005

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 :


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

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