NERSCPowering Scientific Discovery Since 1974

Cluster Compatibility Mode

Note, Cray does not support the Cluster Compatibility Mode (CCM) under Slurm (Edison migrated to Slurm in Dec., 2015). We will update this website when Cray supports CCM under Slurm in the future. To support the TCP/IP workload, we are providing the NERSC "CCM" on Edison. Please follow the sample job script on the "Running Jobs" page to run your TCP/IP workload (You just need to use an additional directive,  #SBATCH --ccm, to run under CCM). Note that the NERSC CCM does not provide the same environment as Cray CCM used to provide. The NERSC CCM is equivalent to just enabling ssh between compute nodes.