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Ada:Usable Memory for Batch Jobs

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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.

Memory Limits of Nodes
64GB Nodes 256GB Nodes
Node Count 811 26
Number of Cores 20 Cores (2 sockets x 10 core)
Memory Limit
Per Core 		2560 MB
2.5 GB 		12400 MB
12 GB
Memory Limit
Per Node 		56000 MB
54 GB 		248000 MB
242 GB

SLURM may queue your job for an excessive time (or indefinitely) if waiting for some particular nodes with sufficient memory to become free.

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