to hyperthread or not with single threaded application

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to hyperthread or not with single threaded application

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I amrunning a single threaded explicit solid mechanics code.A console application with mainly number crunching.Recently we bought PC with dual Xeon processors. With hyperthreading enabled the OS believes there are 4 processors. I need to do a case study with several runs of the same code. (The cases are very similarso theyshould (approximately) take equal amount of time)

I wonder what will be faster

1) running2 cases with no-HT and when they finish run 2 more cases or

2) run 4 cases simultaneously with HT enabled.

Trying to read up on the hyperthreading but I have not been able to concludewhich will be faster(I have not tested my self yet)

Any comments appreciated.

/jorgen

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