Additional Compute Nodes Added to NIH Biowulf Cluster (Biowulf)

The Biowulf Staff is pleased to announce the expansion of the
NIH Biowulf cluster by 336 compute nodes (2688 processing cores).

The nodes are configured with two Intel quad-core "Nehalem" processors
running at 2.67 GHz (8 cores/node), 24 GB memory, gigabit ethernet and 
200 GB local disk available as /scratch.  Additionally, 16 nodes have 
been configured with 72 GB memory for a cluster-wide total of 32 nodes 
with 72 GB.

The addition of these nodes brings the total number of processing
cores in the Biowulf cluster to 9000.

For users wishing to use these nodes to run 8-process parallel jobs,
use the "c8" PBS property to allocate nodes with 8-cores.  Running
single node jobs on "ib" nodes is no longer permitted.  For users 
wishing to use these nodes for their memory size, use the "g24" 
property.

Since all nodes in the cluster are now 64-bit, the x86-64 property
will be deprecated.  Beginning JULY 21, specifying the x86-64 property
to qsub will return an error.