From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@ozlabs.org
Cc: Mark Nelson <markn@au1.ibm.com>,
Gunnar von Boehn <VONBOEHN@de.ibm.com>,
cbe-oss-dev@ozlabs.org, Michael Ellerman <ellerman@au1.ibm.com>
Subject: Re: [RFC 0/3] powerpc: memory copy routines tweaked for Cell
Date: Thu, 19 Jun 2008 13:53:16 +0200 [thread overview]
Message-ID: <200806191353.17323.arnd@arndb.de> (raw)
In-Reply-To: <200806191753.51495.markn@au1.ibm.com>
On Thursday 19 June 2008, Mark Nelson wrote:
> The plan is to use Michael Ellerman's code patching work so that at runtime
> if we're running on a Cell machine the new routines are called but otherwise
> the existing memory copy routines are used.
Have you tried running this code on other platforms to see if it
actually performs worse on any of them? I would guess that the
older code also doesn't work too well on Power 5 and Power 6, so the
cell optimized version could give us a significant advantage as well,
albeit less than another CPU specific version.
Arnd <><
next prev parent reply other threads:[~2008-06-19 11:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-19 7:53 [RFC 0/3] powerpc: memory copy routines tweaked for Cell Mark Nelson
2008-06-19 11:53 ` Arnd Bergmann [this message]
2008-06-19 12:02 ` Paul Mackerras
2008-06-19 13:59 ` Arnd Bergmann
2008-06-19 14:53 ` Olof Johansson
2008-06-20 0:04 ` Mark Nelson
2008-06-19 12:11 ` Gunnar von Boehn
2008-06-19 23:33 ` Paul Mackerras
2008-06-20 16:12 ` Gunnar von Boehn
2008-06-19 23:49 ` Mark Nelson
2008-06-21 0:12 ` Mark Nelson
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