Calgary: New Linux Cluster
Monday, 09 Aug 2004
CGD's latest cluster, Calgary, is open for business.
Calgary is a smaller cluster with similar hardware to Bangkok,
with the addition of Infiniband as a network fabric. To make use
of the Infinband, codes must be compiled with the "mpich*-ib"
variant. CAM showed a 10% increase in performance using the Infiniband
over the gigabit-ethernet fabric. Greater increases are expected
once more nodes are added to the fabric. YMMV.
Calgary also has hyper threading turned on, so each node appears
to have 4 CPUs. Use "-l
nodes=<#nodes>:ppn=4" to increase the job density
Calgary jobs can still run over the gig-e without problems.
The CGD Cluster FAQ is located at:
If there are any questions, let me know.
Dell Precision 450
CPU: 2 x 3.06 GHz Intel Xeon w/ 512k cache
Memory: 2 GByte
Disk: 40 GB disk w/ 18 GByte available for scratch per node.
240 GB disk is available as shared disk space for all nodes.
Cluster Network: Gigabit ethernet and Infiniband.
Uplink to non-cluster NFS mounts (ie, /data, /project): 1000Mb/s.
If you have any questions, email Mark