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May 31st, 2009
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i7 instruction costs

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Hi,
i have been looking for this and can't find anywhere about the subject. I would like to know how many clock cycles does it takes to execute each instruction in complete asm instruction set for Intel i7 microprocessor. (including SSE & FPU instructions). Does any one has a list of this values ?
Thanks in advance

Nulik
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nuliknol is offline Offline
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Jun 1st, 2009
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Re: i7 instruction costs

Well, clock cycles certainly do not equate to execution time on modern processors. But, if you still think you need to know this information, then go directly to the source:

http://www.intel.com/design/corei7/documentation.htm
http://www.intel.com/products/proces...uals/index.htm

Those are free downloads!
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Jun 1st, 2009
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Re: i7 instruction costs

Click to Expand / Collapse  Quote originally posted by Evenbit ...
Well, clock cycles certainly do not equate to execution time on modern processors. But, if you still think you need to know this information, then go directly to the source:
i know this , and this is what i am asking, so i could align my code for optimum pipelining.
have them all, nothing helpful there,
no more than do dirty work timing each one, i guess
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nuliknol is offline Offline
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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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