A semi-annual Mesa Lab building maintenance power-down scheduled for October 8 should have little impact on university users of CISL’s high-end resources. Boulder-based UCAR/NCAR staff will be unable to log in to the Yellowstone environment or other services with their authentication tokens for a few hours in the morning, but sessions that start before the power-down will not be affected.
The power-down should otherwise not affect the Yellowstone, Geyser, and Caldera clusters, the GLADE system, or HPSS, which will remain in service at the NCAR-Wyoming Supercomputing Center (NWSC) in Cheyenne. The maintenance work is scheduled to begin at 6 a.m. Saturday, October 8, and conclude by 6 p.m.
Some HPC support services and the HPSS disaster recovery resources that are housed at the Mesa Lab will be unavailable during the power-down. The affected services include the license servers for Mathematica and the PGI compilers, the CISL web site, the help desk ticketing system, and SAM accounting system. The license server supporting MATLAB users on Yellowstone will not be affected.
Users who have urgent help requests during this time should call 303-497-2400 or 307-996-4300 to reach the NWSC operations center.