Difference between revisions of "Ada:Usable Memory for Batch Jobs"
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! 64GB Nodes | ! 64GB Nodes | ||
! 256GB Nodes | ! 256GB Nodes | ||
| − | ! 192GB Nodes in v100 queue | + | ! 192GB Nodes in v100 queue (*) |
|- | |- | ||
| Node Count | | Node Count | ||
| Line 18: | Line 18: | ||
|- | |- | ||
| Number of Cores | | Number of Cores | ||
| − | | colspan=2 | 20 Cores (2 sockets x 10 | + | | colspan=2 | 20 Cores (2 sockets x 10 cores) |
| − | | 24 | + | | 24 Cores (2 sockets x 12 cores) |
|- | |- | ||
| − | | Memory Limit<br> | + | | Memory Limit Per Core <br>(if using all cores per node) |
| 2560 MB <br> 2.5 GB | | 2560 MB <br> 2.5 GB | ||
| 12400 MB <br> 12 GB | | 12400 MB <br> 12 GB | ||
| 7600 MB <br> 7.4 GB | | 7600 MB <br> 7.4 GB | ||
|- | |- | ||
| − | | Memory Limit | + | | Memory Limit Per Node |
| 56000 MB <br> 54 GB | | 56000 MB <br> 54 GB | ||
| 248000 MB <br> 242 GB | | 248000 MB <br> 242 GB | ||
| Line 32: | Line 32: | ||
|- | |- | ||
|} | |} | ||
| + | * V100 nodes were moved to terra in preparation for the decommissioning of Ada | ||
LSF may queue your job for an excessive time (or indefinitely) if waiting for some particular nodes with sufficient memory to become free. | LSF may queue your job for an excessive time (or indefinitely) if waiting for some particular nodes with sufficient memory to become free. | ||
[[Category:Ada]] | [[Category:Ada]] | ||
Latest revision as of 09:00, 6 May 2021
Usable Memory for Batch Jobs
While nodes on Ada have 64GB, 192GB or 256GB of RAM, some of this memory is used to maintain the software and operating system of the node. In most cases, LSF will not schedule jobs if it cannot find a node to satisfy an excessive memory request.
The table below contains information regarding the approximate limits of Ada memory hardware and our suggestions on its use.
| 64GB Nodes | 256GB Nodes | 192GB Nodes in v100 queue (*) | |
|---|---|---|---|
| Node Count | 811 | 26 | 4 |
| Number of Cores | 20 Cores (2 sockets x 10 cores) | 24 Cores (2 sockets x 12 cores) | |
| Memory Limit Per Core (if using all cores per node) |
2560 MB 2.5 GB |
12400 MB 12 GB |
7600 MB 7.4 GB |
| Memory Limit Per Node | 56000 MB 54 GB |
248000 MB 242 GB |
184000 MB 180 GB |
- V100 nodes were moved to terra in preparation for the decommissioning of Ada
LSF may queue your job for an excessive time (or indefinitely) if waiting for some particular nodes with sufficient memory to become free.
