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Re: [patch] Speculative prefetching

From: Andreas Jaeger <aj at suse dot de>
To: Paolo Carlini <pcarlini at suse dot de>
Cc: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>,gcc-patches at gcc dot gnu dot org, jh at suse dot cz
Date: Sun, 14 Mar 2004 17:51:15 +0100
Subject: Re: [patch] Speculative prefetching
References: <20040314163742.GB28990@atrey.karlin.mff.cuni.cz><40548C2A.5050607@suse.de>

Paolo Carlini <pcarlini@suse.de> writes:

> Hi Zdenek!
>
>>   181.mcf           1800   357       505    *     1800   291       618    *
>>
>>
> Have you got a "theory" explaining this HUGE win?!? Without violating
> the non
> disclusure agreement for SPEC, can we say that the data structures /
> access patterns
> of this test are "obviously" amenable to prefetching?

AFAIK 181.mcf is memory bound.  

Public details about mcf are at:
http://www.spec.org/cpu2000/CINT2000/181.mcf/docs/181.mcf.html

Btw. I would be interested in SPECfp also,

Andreas
-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj
  SuSE Linux AG, Maxfeldstr. 5, 90409 Nürnberg, Germany
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References:
- [patch] Speculative prefetching
  - From: Zdenek Dvorak
- Re: [patch] Speculative prefetching
  - From: Paolo Carlini

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