Argh, I recreated your patch by hand, and didn't noticed you had changed "MasterHost" to "HostList"
in the pbs_asyrunjob call. This all make sense now, and it works beautifully on my test setup.
Thank you all!
...
ling
Tom Rudwick wrote:
For the async call the hostlist is passed in. I guess if someone is making
the changes configurable, they would have to choose one method or the other
for the synchronous call style, either compatible with the current
sequence,
or the faster method that eliminates the MPBSJobModify calls.
Josh Butikofer wrote:
Actually, I just checked out the Maui source code and it looks like
you will need to keep at least one of the neednodes calls (the one
before the call to pbs_runjob()), as Maui is not passing a host list
into pbs_runjob(). If Maui does pass in the hostlist to pbs_runjob(),
the neednodes calls are probably not needed.
Josh Butikofer
Cluster Resources, Inc.
#############################
Josh Butikofer wrote:
Tom is right that the "neednodes" modification is no longer needed
for newer versions of TORQUE. You should, in fact, be able to remove
any MPBSJobModify() code that changes "neednodes". I don't have the
Maui code in front of me, but if both MPBSJobModify() calls deal with
neednodes, you should be able to safely remove both of them if using
a newer version of TORQUE.
Josh Butikofer
Cluster Resources, Inc.
#############################
Ling C. Ho wrote:
Yes, I meant the second MPBSJobModify, not MPBSJobStart. So if I
need maui to still assign the nodes for me (using
NODEALLOCATIONPOLICY), could I still use both MPBSJobModify()'s, and
just change pbs_runjob() to pbs_asyrunjob()?
Thanks for your quick reply.
...
ling
Tom Rudwick wrote:
If you mean the second MPBSJobModify, my understanding is that that
call was supposed
to work around an old bug in PBS.
Tom
Ling C. Ho wrote:
Hi Tom,
In your patch, you have commented out both MPBSJobModify calls
before and after pbs_asystart(). I can understand the first
MPBSJobStart() which set the node where the job should run. What
is the purpose of the second MPBSJobStart as it set the neednodes
to 1?
Thanks,
...
ling
Tom Rudwick wrote:
If you search the maui list archives for my asynchronous job
start patch
you can increase that speed greatly.
Tom
Stijn De Weirdt wrote:
hi all,
(this is a crosspost to both maui and torque users list)
we are having issues with the job start rate using maui+torque.
starting
a job takes on average 2 seconds, which is slow for what our
users are
dumping in our queues.
with a job start i mean the following cycle
04/01 10:01:08 MRMJobStart(374900,Msg,SC)
04/01 10:01:08 MPBSJobStart(374900,gengar,Msg,SC)
04/01 10:01:08
MPBSJobModify(374900,Resource_List,Resource,node088.gengar.gent.vsc)
04/01 10:01:10 MPBSJobModify(374900,Resource_List,Resource,1)
04/01 10:01:10 INFO: job '374900' successfully started
04/01 10:01:10 INFO: command sent to server
04/01 10:01:10 INFO: response received from server
i've already tried to follow the "large cluster" tuning tips to
see if
it helps, but no real result. (the only tip that might solve the
problemn is the asyncstart option from moab ;). (we have a 200
node, 8
core/node cluster (i actually don't think this is "large"))
anyway, before i dig in the code looking for options, i'm
wondering what
other people are seeing as minimal start time, so i know if it is
possible at all.
many thanks,
stijn
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