CCL:G: Running Two jobs on a shared memory computer

 Sent to CCL by: "Ross Walker" [ross]=[]
 Dear Roger,
 >     I have several shared processor opterons. At the moment I can not
 > run guassian on two shared memory processors with out it crashing.
 > If I try to run two jobs separately the both end up running
 > on the same
 > processor.
 > Is there any way to get both jobs to run on separate processors.
 If by this you mean run two single processor Gaussian jobs at the same time
 on a dual processor machine this should just work. The operating system
 should take care of processor affinity and schedule on job (for a decent
 timeslice) on one cpu and the other on the other cpu. If it is not doing
 this then there is something seriously wrong with your system installation.
 How do you know they are both running on the same processor?
 Note 'top' by default on most versions of Linux now defaults to single cpu
 mode where only the overall system stats are reported and not individually
 by CPU. you can change top do display usage by cpu and also show the cpu
 number on which a process is running by modifying the file .toprc in your
 home directory. Here is mine:
 Id:a, Mode_altscr=0, Mode_irixps=1, Delay_time=1.000, Curwin=0
 Def     fieldscur=AEHIOQTWKNMbcdfgJplrsuvyzX
         winflags=30009, sortindx=10, maxtasks=0
         summclr=1, msgsclr=1, headclr=3, taskclr=1
 Job     fieldscur=ABcefgjlrstuvyzMKNHIWOPQDX
         winflags=62777, sortindx=0, maxtasks=0
         summclr=6, msgsclr=6, headclr=7, taskclr=6
 Mem     fieldscur=ANOPQRSTUVbcdefgjlmyzWHIKX
         winflags=62777, sortindx=13, maxtasks=0
         summclr=5, msgsclr=5, headclr=4, taskclr=5
 Usr     fieldscur=ABDECGfhijlopqrstuvyzMKNWX
         winflags=62777, sortindx=4, maxtasks=0
         summclr=3, msgsclr=3, headclr=2, taskclr=3
 My apologies if I misunderstood your question.
 All the best
 |\oss Walker
 | HPC Consultant and Staff Scientist |
 | San Diego Supercomputer Center |
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