I havea queue clouds.q that consists of two hosts with 8 slots each:
email@example.com BIPC 0/0/8 6.21 linux-x64
firstname.lastname@example.org BIPC 0/0/8 6.34 linux-x64
They each have the mpirr parallel environment. It appears that after a job that uses it complets, one or more of the mpirr slots can disappear. When I try to submit another job with -pe mpirr 16 I get:
$ qstat -j 25496 | grep mpirr
parallel environment: mpirr range: 16
cannot run in PE "mpirr" because it only offers 15 slots
This may clear up with time or with a qmaster restart.
Using 2011.11 svn revision 131.