[Mauiusers] Standing reservations claiming too many and wrong nodes
f.dijkstra at rug.nl
Mon Mar 28 03:39:57 MDT 2011
On our compute cluster, running maui 3.3, we have a problem with
standing reservations claiming too many nodes, and also claiming nodes
of the wrong type.
The two reservations are defined like this:
SRCFG[short] DEPTH=2 TASKCOUNT=8 NODEFEATURES=nodes FLAGS=SPACEFLEX
SRCFG[short] DAYS=Mon,Tue,Wed,Thu,Fri STARTTIME=08:00:00 ENDTIME=18:00:00
SRCFG[md] DEPTH=2 TASKCOUNT=24 NODEFEATURES=nodes FLAGS=SPACEFLEX
The first is in order to reserve a few nodes during office hours for the
short queue. The second reserves nodes for a group of users.
Note that both are tied to nodes with the feature "nodes".
We see, however, that maui very often is reserving a lot of nodes extra
for the next reserving period. It also reserves nodes with the wrong
node feature. Restarting maui helps fixing the reservation problem.
Is there a way to fix this problem in a more structural way?
Fokke Dijkstra<f.dijkstra at rug.nl>
High Performance Computing& Visualisation
Donald Smits Center for Information Technology, University of Groningen
Postbus 11044, 9700 CA Groningen, The Netherlands
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