RE: Itanium2@900MHz slower than alpha@666MHz ?

From: Chen, Kenneth W <kenneth.w.chen_at_intel.com>
Date: 2003-10-25 06:36:32
>> One other neat thing about Itanium architecture is the capability of
>> it's performance counter.  It has capability to do cycle accounting
that
>> break-down the number of cycles that are lost due to various kinds of
>> micro-architectural events, it is based on CPU's actual stall cycles
in
>> the pipeline so you can see exactly where the stall is coming from to
>> eliminate any guess work.
>
>Are qprof and pfmon enough to do this ?

Yes.

>> See electron compiler user's guide for PGO methodology:
>>
http://www.intel.com/software/products/compilers/c60l/resources/c_ug_lnx
>> .pdf
>
>Is this the same for 7.x ?

I think so.

- Ken
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Received on Fri Oct 24 16:37:05 2003

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