Changeset 89 for trunk/oarutils

Timestamp:

Jun 5, 2012, 11:14:20 PM (12 years ago)

Author:

g7moreau

Message:

• Example of transmit use

File:

• trunk/oarutils/oar-parexec (modified) (2 diffs)

trunk/oarutils/oar-parexec

@@ -589 +589 @@
 
 C<oar-parexec> is compatible with the OAR checkpointing.
-Il you have 2000 small jobs that need 55h to be done on 6 cores,
+If you have 2000 small jobs that need 55h to be done on 6 cores,
 you can cut this in small parts.
 
@@ -631 +631 @@
 They will be launch with the same command line at the next OAR run.
 
+Example: if you have 50 small jobs that each need 72h to be done on 1 cores,
+you can cut this in 24h parts.
+
+For this example, we suppose that each long job loop need about 20min...
+So, we send a checkpoint 30min before the end of the process
+to let C<oar-parexec> suspend the jobs started.
+After being checkpointed, C<oar-parexec> do not start any new small job.
+
+ oarsub -t idempotent -n test \
+   -l /core=6,walltime=24:00:00 \
+   --checkpoint 1800 \
+   --transmit \
+   "oar-parexec -f ./subjob.list.txt -l ./subjob.list.log"
+
+After 23h30min, the OAR job will begin to stop launching new small job.
+When all running small job are suspend, it's exit.
+But as the OAR job is type C<idempotent>,
+OAR will re-submit it as long as all small job are not finished...
+
 =head1 SEE ALSO