Interactive batch sessions on Biowulf cluster (Biowulf)

This email is for users of the NIH Biowulf cluster who allocate
nodes for interactive sessions using the "qsub -I" command.

Effective immediately, a wallclock time limit of 24 hours will
be placed on sessions which allocate nodes with a "node
specification".  For example, the following command uses a node
specification which will allocate an 8 GB node for exclusive use:

qsub -l nodes=1:m8192 -I

This interactive session will have a wallclock limit placed on
it of 24 hours, after which it will be terminated by the system.

The following command does not include a node specification:

qsub -l nodes=1 -I

As before, this interactive session will be run on a shared node
without a wallclock limit.

Users are still encouraged to exit from sessions once they have
finished with them.

Please send questions or comments to staff@biowulf.nih.gov.