[Beowulf] hpl - large problems fail
ctierney at HPTI.com
Thu Mar 10 14:29:07 PST 2005
On Thu, 2005-03-10 at 13:00, Paul Johnson wrote:
> I have a 4 node cluster(dont snicker :) ) and Im trying to do some
> benchmarking with HPL. I want to test 2 of the nodes with 1Gb of
> ram each. I calculated the maximum problem size that can fit in 2Gb
> and still allow for memory for the operating system. That came out to
> be around 14500x14500. When I run that size of a test it always fails.
> The largest problem that I can test and not have it fail on me is
> What is the reason behind this? Im confused on what is going on here.
> Thanks for any help.
Run hpl on each node by itself, using all of the memory.
You probably have a bad stick of memory somewhere.
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