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cluster:208 [2021/10/15 19:29] hmeij07 [Overview] |
cluster:208 [2021/10/16 20:22] hmeij07 [Changes] |
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===== Changes ===== | ===== Changes ===== |
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| ** OverSubscribe ** |
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Suggestion was made to set ''OverSubcribe=No'' for all partitions (thanks, Colin). We now observe with a simple sleep script that we can run 16 jobs simultaneously (with either -n or -B). So that's 16 physical cores, each has a logical core (thread) for a total of 32 cpus for ''n37''. | Suggestion was made to set ''OverSubcribe=No'' for all partitions (thanks, Colin). We now observe with a simple sleep script that we can run 16 jobs simultaneously (with either -n or -B). So that's 16 physical cores, each has a logical core (thread) for a total of 32 cpus for ''n37''. |
--- //[[hmeij@wesleyan.edu|Henk]] 2021/10/15 15:18// | --- //[[hmeij@wesleyan.edu|Henk]] 2021/10/15 15:18// |
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| ** GPU-CPU cores ** |
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| Noticed this with debug level on in slurmd.log |
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| <code> |
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| # n37: old gpu model bound to all physical cpu cores |
| GRES[gpu] Type:tesla_k20m Count:1 Cores(32):0-15 Links:-1,0,0,0 /dev/nvidia0 |
| GRES[gpu] Type:tesla_k20m Count:1 Cores(32):0-15 Links:0,-1,0,0 /dev/nvidia1 |
| GRES[gpu] Type:tesla_k20m Count:1 Cores(32):0-15 Links:0,0,-1,0 /dev/nvidia2 |
| GRES[gpu] Type:tesla_k20m Count:1 Cores(32):0-15 Links:0,0,0,-1 /dev/nvidia3 |
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| # n78: somewhat dated gpu model, bound to top/bot of physical cores (16) |
| GRES[gpu] Type:geforce_gtx_1080_ti Count:1 Cores(32):0-7 Links:-1,0,0,0 /dev/nvidia0 |
| GRES[gpu] Type:geforce_gtx_1080_ti Count:1 Cores(32):0-7 Links:0,-1,0,0 /dev/nvidia1 |
| GRES[gpu] Type:geforce_gtx_1080_ti Count:1 Cores(32):8-15 Links:0,0,-1,0 /dev/nvidia2 |
| GRES[gpu] Type:geforce_gtx_1080_ti Count:1 Cores(32):8-15 Links:0,0,0,-1 /dev/nvidia3 |
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| # n79, more recent gpu model, same bound pattern of top/bot (24) |
| GRES[gpu] Type:geforce_rtx_2080_s Count:1 Cores(48):0-11 Links:-1,0,0,0 /dev/nvidia0 |
| GRES[gpu] Type:geforce_rtx_2080_s Count:1 Cores(48):0-11 Links:0,-1,0,0 /dev/nvidia1 |
| GRES[gpu] Type:geforce_rtx_2080_s Count:1 Cores(48):12-23 Links:0,0,-1,0 /dev/nvidia2 |
| GRES[gpu] Type:geforce_rtx_2080_s Count:1 Cores(48):12-23 Links:0,0,0,-1 /dev/nvidia3 |
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| </code> |
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**[[cluster:0|Back]]** | **[[cluster:0|Back]]** |
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