BEOWULF cluster hangs
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Donald Becker becker at scyld.comThu Sep 26 10:20:25 PDT 2002
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On Thu, 26 Sep 2002, G.de-With wrote: > Since a month we have a LINUX BEOWULF cluster, the clusters contains 7 P4 > dual processor 2GHz computers, with 8Gb of RAM per machine. For our network > we have used Gigabit ethernet. First data point: 8GB memory. > When running large computational fluid simulations the simulation starts to > slow down. At some point the response of the computer is so poor that we The symptom. Right away I suspect that you are using a 2.4 kernel before 2.4.17. > On our cluster we are running RH7.2 with the LINUX kernel version 2.4.7-10. No _unmodified_ kernel before 2.4.17 was usable with long-term or repeated large memory jobs. Now that the kernel VM problems are largely fixed, I think you will finally find acknowledgment/consensus about this point. -- Donald Becker becker at scyld.com Scyld Computing Corporation http://www.scyld.com 410 Severn Ave. Suite 210 Second Generation Beowulf Clusters Annapolis MD 21403 410-990-9993
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