Redundant work using udprelay

Christian Foisy (
Fri, 18 Apr 1997 20:22:51 -0400

Right now I'm using idle periods on our SP2 with communication going
trough udprelay. It's working except for the following "problem": when
many copies of the program are launched in parallel, each one of them
receives the same block of keys to test. At the next iteration,
everything is ok as they will receive different blocks. Is there a way
to avoid or shorten this redundant period? (I usually have only short
idle slots)

I suspect, unfortunately, that changes to the keymaster are necessary
to do so (or maybe a switch for deschall to force it to request a
small block at the beginning).

Christian Foisy, CACPUS           | tel: (819) 821-8000 ext 2086
SP2 Parallel computing specialist | fax: (819) 821-8017
Universite de Sherbrooke       | e-mail: