running Fortran code on Linux

[Michael Yang]

Dear All, 

I have a CFD Fortran code running on both Windows and Linux platforms. It surprised me that on windows system the code can use up to 50% cpu, while it can use only about 10% cpu in the linux system even there is no other program running. More than 80% of cpu is idle. BTW, both computers have intel 3GHz cpu. I am wondering if anyone has experience in programming under Linux enviroment. How can I make most use of the system resources, i.e., cpu, memory etc. Does my problem come from the code itself or from other things like the compiler etc. 

Thank you very much!

 



		
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