Rolling reboot of Owens and Pitzer starting from July 11, 2022
We will have rolling reboots of Owens and Pitzer clusters including login and compute nodes, starting from 9AM Monday, July 11 2022.
Missing shared library of some mvapich2 modules
Updates on Feb 25 2022:
This issue is fixed.
Original Post:
Users may see an issue of missing shared library with some mvapich2 modules on Pitzer and Owens. The error is like
<path_to_executable>: error while loading shared libraries: libim_client.so.0: cannot open shared object file: No such file or directory
We are in the process of rebuilding mvapich2 versions that are affected.
Emergency maintenance in OSC’s data center Feb 10 2022
OSC will shut down significant portions of the Owens and Pitzer clusters for several hours this afternoon (Thursday, Feb. 10).
ondemand gpu request error Nov 2021
When requesting an interactive session in ondemand and requesting gpu resources, users may see an error similar similar to "sbatch: error: Invalid generic resource (gres) specification"
OSC staff are currently looking into this.
This issue has been resolved.
CP2K 6.1 would fail on Pitzer Cascade Lakes (48-core) node:
CP2K 6.1 would fail with the following error when running on Pitzer Cascade Lakes (48-core) node:
Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation. Backtrace for this error:
Thid could be a bug in libxsmm 1.9.0 which is released on Mar 15, 2018 (Cascade Lake is launched in 2019). The bug has been fixed in cp2k/7.1.
Singularity: reached your pull rate limit
You might encounter an error while pulling a large Docker image:
ERROR: toomanyrequests: Too Many Requests.
or
Cannot use mpiexec/mpirun from OpenMPI in an interactive session
We found mpiexec/mpirun from OpenMPI can not be used in an interactive session (launched by sinteractive) after upgrading Pitzer and Owens to Slurm 20.11.4. Please use srun only while you use OpenMPI in an interactive session.
Rolling reboot of Pitzer cluster, starting from Feb 03, 2021
We will have rolling reboot of Pitzer cluster. User will expect a ~10 minute outage of login nodes at about 9AM Feb 05, 2021.
MVAPICH2 build of CP2K 6.1
We have found some types of CP2K jobs would fail or have poor performance using cp2k.popt and cp2k.psmp from MVAPICH2 build (gnu/4.8.5 mvapich2/2.3). This version will be removed on December 15th, 2020. Please switch to Intel MPI build (gnu/7.3.0 intelmpi/2018.3).
A partial-node MPI job failed to start using Intel MPI mpiexec
A partial-node MPI job may fail to start using mpiexec from intelmpi/2019.3 and intelmpi/2019.7 with error messages like