The compute nodes of Lise in Berlin (blogin.hlrn.de) and Emmy in Göttingen (glogin.hlrn.de) are organized via the following SLURM partitions:
Lise (Berlin)
Partition (number holds cores per node) | Node name | Max. walltime | Nodes | Max. nodes per job | Usable memory MB per node | CPU | Shared | Charged core-hours per node | Remark | |
|---|---|---|---|---|---|---|---|---|---|---|
| standard96 | bcn# | 12:00:00 | 1204 | 512 | 16 / 500 | 362 000 | Cascade 9242 | ✘ | 96 | default partition |
| standard96:test | bcn# | 1:00:00 | 32 dedicated +128 on demand | 16 | 1 / 500 | 362 000 | Cascade 9242 | ✘ | 96 | test nodes with higher priority but lower walltime |
| large96 | bfn# | 12:00:00 | 28 | 8 | 16 / 500 | 747 000 | Cascade 9242 | ✘ | 144 | fat memory nodes |
| large96:test | bfn# | 1:00:00 | 2 dedicated +2 on demand | 2 | 1 / 500 | 747 000 | Cascade 9242 | ✘ | 144 | fat memory test nodes with higher priority but lower walltime |
| large96:shared | bfn# | 48:00:00 | 2 dedicated | 1 | 16 / 500 | 747 000 | Cascade 9242 | ✓ | 144 | fat memory nodes for data pre- and postprocessing |
| huge96 | bsn# | 24:00:00 | 2 | 1 | 16 / 500 | 1522 000 | Cascade 9242 | ✓ | 192 | very fat memory nodes for data pre- and postprocessing |
12 hours are too short? See here how to pass the 12h walltime limit with job dependencies.
Emmy (Göttingen)
* 600 for the nodes with 4 GPUs, and 1200 for the nodes with 8 GPUs
Which partition to choose?
If you do not request a partition, your job will be placed in the default partition, which is standard96.
The default partitions are suitable for most calculations. The :test partitions are, as the name suggests, intended for shorter and smaller test runs. These have a higher priority and a few dedicated nodes, but are limited in time and number of nodes. Shared nodes are suitable for pre- and postprocessing. A job running on a shared node is only accounted for its core fraction (cores of job / all cores per node). All non-shared nodes are exclusive to one job, which implies that full NPL are paid.
Details about the CPU/GPU types can be found below.
The network topology is described here.
The available home/local-ssd/work/perm storages are discussed in File Systems.
An overview of all partitions and node statuses is provided by: sinfo -r
To see detailed information about a nodes type: scontrol show node <nodename>
List of CPUs and GPUs at HLRN
| Short name | Link to manufacturer specifications | Where to find | Units per node | Cores per unit | Clock speed |
|---|---|---|---|---|---|
| Cascade 9242 | Intel Cascade Lake Platinum 9242 (CLX-AP) | Lise and Emmy compute partitions | 2 | 48 | 2.3 |
| Cascade 4210 | Intel Cascade Lake Silver 4210 (CLX) | blogin[1-8], glogin[3-8] | 2 | 10 | 2.2 |
| Skylake 6148 | Intel Skylake Gold 6148 | Emmy compute partitions | 2 | 20 | 2.4 |
| Skylake 4110 | Intel Skylake Silver 4110 | glogin[1-2] | 2 | 8 | 2.1 |
| Tesla V100 | NVIDIA Tesla V100 32GB | Emmy grete partitions | 4 | 640/5120* | |
| Tesla A100 | NVIDIA Tesla A100 40GB and 80GB | Emmy grete partitions | 4 or 8 | 432/6912* |
*Tensor Cores / CUDA Cores