[gridengine users] ru_utime

Simon Matthews simon.d.matthews at gmail.com
Mon Apr 30 16:40:30 UTC 2018


Christopher,

On Mon, Apr 30, 2018 at 7:30 AM, Christopher Heiny <cheiny at synaptics.com> wrote:

>
>
> This is the total CPU time (both userspace and system) for all
> processes in your job's process groups.  This includes the one directly
> controlled by execd, and by any helper processes that might be spawned
> by methods that are not tightly integrated into SGE.
>
> We experienced a similar confusion earlier this month with some Matlab
> jobs, using Matlab's parallel processing toolkit.  It appears that if
> the program controlled by execd spawns additional helper processes
> using methods GridEngine doesn't understand, then the CPU time for
> those helper processes is included here, but is not included in
> ru_utime/ru_stime.

The job that is submitted is a script that, after some setup runs a
program under /usr/bin/time. So perhaps wrapping the real target
program in "time" is causing the discrepancy in cpu utilization?

Simon



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