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[Bug-gsl] [bug #54925] Reduce cache misses for source_gemm_r


From: Patrick Alken
Subject: [Bug-gsl] [bug #54925] Reduce cache misses for source_gemm_r
Date: Wed, 31 Oct 2018 09:57:21 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

URL:
  <https://savannah.gnu.org/bugs/?54925>

                 Summary: Reduce cache misses for source_gemm_r
                 Project: GNU Scientific Library
            Submitted by: psa
            Submitted on: Wed 31 Oct 2018 01:57:19 PM UTC
                Category: Performance
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: 
         Discussion Lock: Any

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Details:

>From max =dot= bruce12 =at= gmail =dot= com

Hey guys,

I noticed that your matrix multiplication code had bad cache
performance due to a misordering of a loop. In a replicated version of
my change, I saw about 20% performance gains on my AMD FX CPU.

-Max



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File Attachments:


-------------------------------------------------------
Date: Wed 31 Oct 2018 01:57:19 PM UTC  Name:
0001-Reduce-cache-misses-for-source_gemm_r.patch  Size: 2KiB   By: psa

<http://savannah.gnu.org/bugs/download.php?file_id=45339>

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