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| ====== Node Performance ====== | ====== Node Performance ====== | ||
| - | The standard compute nodes have 2 Intel Xeon E5-2670 processors each, and 128GB of RAM. Each of the processors has 8 cores. | + | The standard compute nodes have 2 Intel Xeon E5-2670 processors each, and 128GB of RAM. Each of the processors has 8 cores. |
| But, if you put a memory access intensive job on all cores they will likely run slower than you expect: the processors have 4 memory channels each, so with all 8 cores in use the jobs may start competing for memory access. If, on the other hand, the jobs spend some time waiting for external data access (disk reads) to complete, there may be no overall slow-down. | But, if you put a memory access intensive job on all cores they will likely run slower than you expect: the processors have 4 memory channels each, so with all 8 cores in use the jobs may start competing for memory access. If, on the other hand, the jobs spend some time waiting for external data access (disk reads) to complete, there may be no overall slow-down. | ||
node_performance.1398354642.txt.gz ยท Last modified: 2014/04/24 11:50 by root
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