Martin, Thank you for reporting the bug and supplying a patch. It will appear in the v2.2.3 release.
Don From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, February 18, 2011 9:59 AM To: [email protected] Cc: [email protected]; [email protected] Subject: [slurm-dev] Incorrect results for task/affinity block second distribution and cpus-per-task > 1 There is a bug in the task affinity code that produces incorrect results for jobs with cpus-per-task >1 when the second distribution method is "block" (srun option -m xxxxx:block). Here is an example to show the problem: slurm.conf settings: SelectType=select/cons_res SelectTypeParameters=CR_Core,CR_CORE_DEFAULT_DIST_BLOCK TaskPlugin=task/affinity TaskPluginParam=sched,cores NodeName=n8 NodeHostname=bones NodeAddr=bones Sockets=2 CoresPerSocket=4 ThreadsPerCore=1 Procs=8 PartitionName=bones-only Nodes=n8 State=UP [sulu] (slurm) etc> srun -p bones-only -c 3 -n 2 -m block:block -l cat /proc/self/status | grep Cpus_allowed_list | sort 0: Cpus_allowed_list: 0-4,6 1: Cpus_allowed_list: 0-3,6 The attached patch fixes the problem in 2.2.1. Here are the results after the patch is applied: [sulu] (slurm) etc> srun -p bones-only -c 3 -n 2 -m block:block -l cat /proc/self/status | grep Cpus_allowed_list | sort 0: Cpus_allowed_list: 0,2,4 1: Cpus_allowed_list: 1,3,6 Regards, Martin
