Differences

This shows you the differences between two versions of the page.

--- cluster:208 [2021/10/15 13:07]
hmeij07 [MPI]
+++ cluster:208 [2021/10/15 19:16]
hmeij07 [Feedback]
@@ Line 163: / Line 163: @@
 <code>
-$ srun --partition=mwgpu -n 4 -B 1:1:1 --mem=1024 sleep 60 &
+$ srun --partition=mwgpu -n 4 -B 1:4:1 --mem=1024 sleep 60 &
 </code>
@@ Line 379: / Line 379: @@
 ===== Feedback =====
-If there are errors on this page, or mistatements, let me know. As we test and improve the setup to mimic a production environment I will update the page (and mark those entries with timestamp/signature).
+If there are errors on this page, or mistatements, let me know. As we test and improve the setup to mimic a production environment I will update the page (and mark those entries with newer timestamp/signature).
- --- //[[hmeij@wesleyan.edu|Henk]] 2021/10/14 15:20//
+ --- //[[hmeij@wesleyan.edu|Henk]] 2021/10/15 09:16//
+===== Changes =====
+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 for a total of 32.
+''for i in `seq 1 17`;do sbatch sleep; done''
+<code>
+#!/bin/bash
+#SBATCH --job-name=sleep
+#SBATCH --partition=mwgpu
+###SBATCH -n 1
+#SBATCH -B 1:1:1
+#SBATCH --mem=1024
+sleep 60
+</code>
 \\
 **[[cluster:0|Back]]**

DokuWiki