[Mauiusers] ALERT: range overflow in MRLMerge()

Bjørn-Helge Mevik b.h.mevik at usit.uio.no
Tue Nov 17 06:08:52 MST 2009

Dear all,

We are running Maui 3.2.6p21 on a cluster with 4400 cores, often having
more than 2000 jobs in the queue.

We get quite a few "ALERT:    range overflow in MRLMerge()" messages in
the Maui log.  This seems to happen in MRLMerge() in MRes.c, when
cindex >= MAX_MRANGE.  MAX_MRANGE is defined to be 256 in msched.h.

Is it advisable to simply increase MAX_MRANGE, or is this a symptom of
something more sinister?

Bjørn-Helge Mevik, dr. scient,
Research Computing Services, University of Oslo

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