[gmx-users] hyperthreading

Erik Lindahl lindahl at csb.stanford.edu
Wed Jan 28 16:48:01 CET 2004

> On a multiprocessor machine you may even need to turn it off to avoid
> Linux from scheduling two processes on the same processor. Apparently
> this has been fixed in the 2.6 kernel.

Test both with and without hyperthreading enabled. It was rumored to be 
"fixed" in recent 2.4 kernels too, but after weeks of struggling on our 
cluster we just turned it off in the bios, and now it works much 



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