Author: Dann Corbit
Date: 16:19:35 12/05/01
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On December 05, 2001 at 18:54:35, Pham Minh Tri wrote: >Hi all, >Someone could know exactly how many processor's cirlces for some functions (e.g, >eval). I am curious how to measure? By circles, I assume you mean cycles. You can get an approximation by having your compiler emit assembly for the function you are interested in. Then count the cycles for each operation. You will notice that some operations will have a cycle range rather than a cycle count. Also, it is going to be hard for you to accurately predict pipeline stalls and missed branch predictions. Hence, what people usually do is just run the sucker through a profiler and see where the time is going.
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