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speed of linux exec v windows on same machine

Intel_C_Intel
Employee
318 Views
Guys

We have compiled an optimised exec using the intel c compilers under windows NT (using studio .NET) and redhat linux.
The benchmark for the linux exec is 19.0s
The benchmark for the NT exec is 320.0s

Surely this cant be right. Does the OS make this difference ?

Each was basically compiled using /O2
0 Kudos
2 Replies
JenniferJ
Moderator
318 Views
This is a very interesting comparison. Have you tried gcc & VS .NET and what're their results?

If gcc or VS .NET gives much better performance, could you open an issue at our Premier support website?

Thanks very much,
Jennifer
Maximillia_D_Intel
318 Views

We have seen some differences between OS, but nothing of that magnitude. It would be interesting to see your testcase. Yes, if you can, please do as Jennifer suggests.

Max [Intel Compiler Team]
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