Am 11.04.2012 um 09:52 schrieb Ursula Winkler: > Ron Chen wrote: >> As long as Grid Engine is not using more job slots than the configured >> number (the no. of processors in the system by default), then it is the >> correct behaviour. >> >> The OS should spread the tasks around evenly. How many tasks are there on >> your 12-core machine? >> > We have on each host 2 6-core Prozessors, ergo 12 slots. And 12 slots are > configured in the SGE for each host. The SGE also correctly does not allow > more than 12 tasks, but this 12 tasks are not distributed in the way that > each one gets a separate core, but e.g. 8 get the cores 0-3,
These go to one MPI job or to two? > 4 tasks get cores 4-7 and the other cores remain unused. The double seizure > always occurs when more than 1 MPI-Job (not single prozessor jobs) are > scheduled to the same host. This could also be a problem of the MPI implementations. Which one do you use - you use a plain mpiexec? -- Reuti > Ursula > _______________________________________________ > users mailing list > [email protected] > https://gridengine.org/mailman/listinfo/users _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users
