[GE users] cputime for parallel jobs does not reflect the number of cpus used

Craig Tierney ctierney at hypermall.net
Thu Mar 2 15:42:18 GMT 2006


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Sebastian Stark wrote:
> 
> On 02.03.2006, at 16:03, Rayson Ho wrote:
> 
>> Either follow Ron's suggestion [1] or you can use the wallclock time
>> of the parallel job (wallclock * no. of CPU) for sharetree CPUtime
>> calculation.
> 
> Which seems bad to me because wallclock also includes the time a job was 
> suspended.
>

This is only an issue if jobs get suspended.  For the system I work 
with, MPI jobs would die if they were suspended (can't suspend the
open ports).

Craig

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