Summary PHYSGI Meeting 6/13/94

T. Throwe

Next Meeting:

The next meeting will be Monday, June 20, 11:30 - 12:00, in Room 2-160.

Production Users of PHYSGI01:

E891 (Saulys et al.) - ~1 CPU intensive job on average.
E850 (Gushue et al.) - ~2 CPU intensive jobs. They have experienced some problems with using the Challenge server in the Chemistry Department.

All experiments which anticipate running more than an single occasional production job during a given week are required to attend the scheduling meeting. If that is not possible they should notify Bruce Gibbard (gibbard@bnl.gov) and Tom Throwe (throwe@rsgi02.rhic.gov) of their needs by Email prior to the Monday 11:30 meeting.

Plan for week beginning 6/13/94:

New rules continue to be in effect for the following week which are intended give a modest advantage to experiments involved in the current AGS run. Please be sure to inform your collaborators of the new rules.

A production process is defined as a process which would accrue an hour or more of CPU time in 8 hours of uncontended running.
Each experiment is allowed to run up to 6 concurrent "production" process, only one of which may be run at full priority, (100).
Experiments not actively engaged in the current AGS run must nice all additional "production" process to 4 (104).
Experiments which are actively engaged in the current AGS run may nice one additional "production" process to 2 (102) but are required to nice "production" processes beyond the first two to 4 (104).
Extended use of a tape drive is defined as use which extends for more than 1 hour.
In the presences of demand by other experiments for tape drives, no experiment should make extended use of more than 2 tape drives.
Experiments not actively engaged in the current run should limit their extend use, in the presence of demand by other experiments, to 1 tape drive.

Other issues:

The TAPMAN utility has been modified to allow for anyone to deallocate an allocated, but empty tape drive. Final testing is being done and the new version should be available today (June 13) or tomorrow.

New PC based software has been obtained to allow for the querying and modifying of Exabyte 8mm tape drive parameters. It is hoped that by adjusting the "byte disconnect" parameter that the problem will go away. Tests with this new software are actively occurring.

Users of PHYSGI01 are still strongly encourage to set a mail forward from their working account on PHYSGI01 to an account on a machine where they frequently check their mail so that they can be easily contacted.