Terra:Batch:Usable Memory
Usable Memory for Batch Jobs
While nodes on Terra have either 64GB or 128GB of RAM, some of this memory is used to maintain the software and operating system of the node. In most cases, excessive memory requests will be automatically rejected by SLURM.
The table below contains information regarding the approximate limits of Terra memory hardware and our suggestions on its use.
| 64GB Nodes | 128GB Nodes | 96GB KNL Nodes (68 core) | 96GB KNL Nodes (72 core) | |
|---|---|---|---|---|
| Node Count | 256 | 48 | 8 | 8 |
| Number of Cores | 28 Cores (2 sockets x 14 core) | 68 Cores | 72 Cores | |
| Memory Limit Per Core |
2048 MB 2 GB |
4096 MB 4 GB |
1300 MB 1.25 GB |
1236 MB 1.20 GB |
| Memory Limit Per Node |
57344 MB 56 GB |
114688 MB 112 GB |
89000 MB 84 GB |
89000 MB 84 GB |
SLURM may queue your job for an excessive time (or indefinitely) if waiting for some particular nodes with sufficient memory to become free.
