New Large Memory Nodes Available on NIH Biowulf (Biowulf)

The Biowulf staff is pleased to announce the addition of
24 large memory (256 GB) nodes to the cluster.  These
nodes will be for jobs that require more than 72 GB, and
in contrast to most nodes in the cluster will be shareable
by more than one job.

To allocate these nodes to your job, use the "mem=" option
to the 'qsub' command, for example:

qsub -l nodes=1,mem=128gb myjob.bat

mem must be equal or greater than 72gb and less than or equal
250gb.  Jobs requesting more than 250gb will continue to 
allocate the single 512GB node.

Multi-process or multi-threaded jobs should use the "ncpus="
option to 'qsub', for example:

qsub -l nodes=1,mem=192gb,ncpus=24 myjob.bat

ncpus must be 32 or less.

The 'freen' command now reports the largest block of available
memory on the 256GB nodes:

--------------------  256 GB nodes  ----------
Available memory: Min - 72 GB, Max - 250 GB