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Re: 3.9.8
by Clint Whaley
::
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Jess,
>Apologies if this is a bit of a stupid question, but I assume that you
>are including cores in with processors (I know many people do)? The
>Athlon X3 is I believe a single 3-core processor?
Yeah, some people have started using that terminology, which I'm not a big
fan of. The X3 is a 3-processor CMP, in the original terminology of
dinosaurs like myself. I know the current trend is redefine processor
to physical package, and then use core to mean processor (eg, central
*core* unit, I guess now), but this redefinition has never made sense to me.
Therefore, if there is some special distinction to be made, I usually
use the term "physical package", or "socket", and then I usually use
"processor" for each CPU, though I will occasionally call it "core".
So, yes, the discussion below says if you are using multiple "cores"
and/or "processors", in the terminology you prefer . . . .
Regards,
Clint
Clint Whaley wrote:
> Guys,
>
> I have just released 3.9.8. The main thing is a huge bug fix for machines
> where the number of processors isn't a power of 2 (eg., Athlon X3 or
> SiCortex MIPS machine). On such systems, I failed to return the proper
> number of processors to use when the general GEMM threading algorithm is
> used, which usually means no threading is done!
>
> I didn't announce it, but I released 3.9.7 just a couple of days ago, and
> it fixed a bug in tgemm that could cause seg faults when K is split.
>
> So, if you are using the developer release on a parallel machine, I
> highly recommend you install 3.9.8.
>
> Cheers,
> Clint
>
> ATLAS 3.9.8 released 02/23/09, changes from 3.9.7
> * Fixed analagous problem in ATL_tsyrk as the 3.9.6 did for ATL_tgemm;
> however, tsyrk bug could not have been exercised by current decomposition.
> * Fixed bug in ATL_Xtgemm where ATL_thrdecompMM failed to return the
> number of processors on non-power-of-2 processor systems
> * Introduced some fixes & workarounds for SiCortex/MIPSICE9:
> - Changed default MIPSICE9 compiler back to gcc, since pathcc produces
> bad ATL_tsyrk when optimization is above -O1 (confirmed compiler error)
> * Added dependence on atlas_ptalias3.h in cblas interface Makefile.
> ATLAS 3.9.7 released 02/20/09, changes from 3.9.6:
> * Fixed bug in ATL_tgemm that caused seg faults for some small-M tGEMMs
> * Added architectural defaults for K7323DNow (Athlon "classic")
>
>
> **************************************************************************
> ** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
> **************************************************************************
>
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
> -Strategies to boost innovation and cut costs with open source participation
> -Receive a $600 discount off the registration fee with the source code: SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Math-atlas-devel mailing list
> Math-atlas-devel@...
> https://lists.sourceforge.net/lists/listinfo/math-atlas-devel
>
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Math-atlas-devel mailing list
Math-atlas-devel@...
https://lists.sourceforge.net/lists/listinfo/math-atlas-devel
**************************************************************************
** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
**************************************************************************
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Math-atlas-devel mailing list
Math-atlas-devel@...
https://lists.sourceforge.net/lists/listinfo/math-atlas-devel
>Apologies if this is a bit of a stupid question, but I assume that you
>are including cores in with processors (I know many people do)? The
>Athlon X3 is I believe a single 3-core processor?
Yeah, some people have started using that terminology, which I'm not a big
fan of. The X3 is a 3-processor CMP, in the original terminology of
dinosaurs like myself. I know the current trend is redefine processor
to physical package, and then use core to mean processor (eg, central
*core* unit, I guess now), but this redefinition has never made sense to me.
Therefore, if there is some special distinction to be made, I usually
use the term "physical package", or "socket", and then I usually use
"processor" for each CPU, though I will occasionally call it "core".
So, yes, the discussion below says if you are using multiple "cores"
and/or "processors", in the terminology you prefer . . . .
Regards,
Clint
Clint Whaley wrote:
> Guys,
>
> I have just released 3.9.8. The main thing is a huge bug fix for machines
> where the number of processors isn't a power of 2 (eg., Athlon X3 or
> SiCortex MIPS machine). On such systems, I failed to return the proper
> number of processors to use when the general GEMM threading algorithm is
> used, which usually means no threading is done!
>
> I didn't announce it, but I released 3.9.7 just a couple of days ago, and
> it fixed a bug in tgemm that could cause seg faults when K is split.
>
> So, if you are using the developer release on a parallel machine, I
> highly recommend you install 3.9.8.
>
> Cheers,
> Clint
>
> ATLAS 3.9.8 released 02/23/09, changes from 3.9.7
> * Fixed analagous problem in ATL_tsyrk as the 3.9.6 did for ATL_tgemm;
> however, tsyrk bug could not have been exercised by current decomposition.
> * Fixed bug in ATL_Xtgemm where ATL_thrdecompMM failed to return the
> number of processors on non-power-of-2 processor systems
> * Introduced some fixes & workarounds for SiCortex/MIPSICE9:
> - Changed default MIPSICE9 compiler back to gcc, since pathcc produces
> bad ATL_tsyrk when optimization is above -O1 (confirmed compiler error)
> * Added dependence on atlas_ptalias3.h in cblas interface Makefile.
> ATLAS 3.9.7 released 02/20/09, changes from 3.9.6:
> * Fixed bug in ATL_tgemm that caused seg faults for some small-M tGEMMs
> * Added architectural defaults for K7323DNow (Athlon "classic")
>
>
> **************************************************************************
> ** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
> **************************************************************************
>
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
> -Strategies to boost innovation and cut costs with open source participation
> -Receive a $600 discount off the registration fee with the source code: SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Math-atlas-devel mailing list
> Math-atlas-devel@...
> https://lists.sourceforge.net/lists/listinfo/math-atlas-devel
>
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Math-atlas-devel mailing list
Math-atlas-devel@...
https://lists.sourceforge.net/lists/listinfo/math-atlas-devel
**************************************************************************
** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
**************************************************************************
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Math-atlas-devel mailing list
Math-atlas-devel@...
https://lists.sourceforge.net/lists/listinfo/math-atlas-devel
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