| 10 | | # On-line users manual # |
| 11 | | * https://www-tgcc.ccc.cea.fr/docs/irene.info.pdf (you will need a TGCC login and password) |
| 12 | | |
| | 10 | # Introduction # |
| | 11 | * On-line users manual: https://www-tgcc.ccc.cea.fr/docs/irene.info.pdf (you will need a TGCC login and password) |
| | 12 | * Irene computing nodes: the nodes of partition '''skylake''' have 48 cores each, which is 3 times more than the computing nodes from the standard partition of Curie. |
| | 13 | * When submitting a job through ccc_msub or ccc_mprun, you must specify -m work, -m scratch, -m store, or combine them like in -m work,scratch. This constraint has the advantage that your jobs won't be suspended if a file system you don't need becomes unavailable. This is done in all jobs in libIGCM. |
| | 14 | * Compute nodes are diskless, meaning that /tmp is not hosted on a local hard drive anymore, but on system memory instead. It offers up to 16 GB (compared to 64 GB on Curie). Please note that any data written to it is reduces the size of the memory that remains available for computations. For libIGCM post-treatment jobs you might need to use more cores than used at curie. |
| | 15 | * The default time limit for a job submission is 2hours (7200s) contrary to 24h (86400s) on curie |
| | 16 | |
| 94 | | ## Other informations ## |
| 95 | | |
| 96 | | * Computing nodes: the nodes of partition skylake have 48 cores each, which is 3 times more than the computing nodes from the standard partition of Curie; |
| 97 | | * File system access MUST be explicit: from the login nodes, you will see the WORK, SCRATCH, STORE spaces as you probably are used to. However, when submitting any job through ccc_msub or ccc_mprun, you must specify -m work, -m scratch, -m store, or combine them like in -m work,scratch; this constraint has the advantage that your jobs won't be suspended if a file system you don't need becomes unavailable; |
| 98 | | * Compute nodes are diskless, meaning that /tmp is not hosted on a local hard drive anymore, but on system memory instead. It offers up to 16 GB (compared to 64 GB on Curie). Please note that any data written to it is reduces the size of the memory that remains available for computations. In our case it change the number of core use for post-treatment like pack_output. |
| 99 | | * The default time limit for a job submission is 2hours (7200s) contrary to 24h (86400s) on curie |
| 100 | | |
