[GE issues] [Issue 3279] New - Description of "job_is_first_task" in `man sge_pe` should be rephrased

reuti reuti at staff.uni-marburg.de
Tue Aug 10 21:13:32 BST 2010


http://gridengine.sunsource.net/issues/show_bug.cgi?id=3279
                 Issue #|3279
                 Summary|Description of "job_is_first_task" in `man sge_pe` sho
                        |uld be rephrased
               Component|gridengine
                 Version|6.2u5
                Platform|All
                     URL|
              OS/Version|All
                  Status|NEW
       Status whiteboard|
                Keywords|
              Resolution|
              Issue type|DEFECT
                Priority|P3
            Subcomponent|man
             Assigned to|andreas
             Reported by|reuti






------- Additional comments from reuti at sunsource.net Tue Aug 10 13:13:28 -0700 2010 -------
The man page of sge_pe mentions for "job_is_first_task":

"..., while a value of FALSE indicates that the job script (and its child  processes)  is
not  part of the parallel program (the number of slots reserved for the job is the number of slots requested with the -pe
switch + 1)."

This is not what is happening. SGE will never lower the available slot count by 5 when only 4 slots are requested. Instead the parameter
controls, whether a local `qrsh` is allowed N or (N-1) times, when N is the number of granted slots on the master node of the parallel job.

(We don't make a sophisticated accounting. But  the following paragraph stating "...accounting information gets multiplied by number of
slots + 1" may also not be correct. When the job script is nothing doing at all besides having one `mpiexec` and only all spread slaves are
processing while the `mpiexec` is waiting, why should the reserved usage be multiplied by slots + 1? Is this really happening?)

------------------------------------------------------
http://gridengine.sunsource.net/ds/viewMessage.do?dsForumId=36&dsMessageId=273602

To unsubscribe from this discussion, e-mail: [issues-unsubscribe at gridengine.sunsource.net].



More information about the gridengine-users mailing list