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Re: Very good news from AMD

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On 7/9/2011 5:01 PM, Jason Riedy wrote:
> And Andy Glew writes:
>> By the way, I don't think that the Cray X1/SV2 did dynamic
>> thread scheduling.  Did it?
>
> Not that I recall.  That would be a difference, depending on how
> it really plays out.  I suspect the first generation won't have
> much support for rescheduling, but hopefully I'm wrong.  I'd bet
> the pressure from the graphics side will prefer using space for
> execution units over saved contexts.
>
>> The Tera machines did have dynamic hardware thread scheduling.
>> But I think they were less dynamic than AMD's GPUs are.
>
> Do you mean the MTA seems less dynamic than the GPUs?  No.  Far
> more so simply by working only with single streams (one-wide
> wavefronts).

Memory may be failing me, but I think that the MTA was a fixed barrel 
scheduled machine.  Did thy not have a fixed 128 threads per node, and 
always switch from thread to thread, every cycle, with no variation in 
the schedule?

The GPUs, on the other hand, are not fixed barrel schedules.  Not in the 
past few years, at least - they may have started as simple barrel 
schedules.  It seems that the AMD Next has generation has the ability, 
on a every 4 cycle basis, to select 10 threads from a pool of 40. 
Dynamic, not a fixed schedule.

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Thread

Very good news from AMD Quadibloc <jsavard@ecn.ab.ca> - 2011-07-07 20:14 -0700
  Re: Very good news from AMD Jason Riedy <jason@lovesgoodfood.com> - 2011-07-08 09:37 -0400
    Re: Very good news from AMD "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-07-08 09:33 -0700
      Re: Very good news from AMD "Paul A. Clayton" <paaronclayton@gmail.com> - 2011-07-08 16:21 -0700
        Re: Very good news from AMD "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-07-08 17:30 -0700
          Re: Very good news from AMD "Paul A. Clayton" <paaronclayton@gmail.com> - 2011-07-25 20:24 -0700
    Re: Very good news from AMD Robert Myers <rbmyersusa@gmail.com> - 2011-07-08 12:33 -0700
      Re: Very good news from AMD Thomas Womack <twomack@chiark.greenend.org.uk> - 2011-07-08 20:59 +0100
        Re: Very good news from AMD Robert Myers <rbmyersusa@gmail.com> - 2011-07-09 14:57 -0700
    Re: Very good news from AMD "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-07-08 17:17 -0700
      Re: Very good news from AMD Jason Riedy <jason@lovesgoodfood.com> - 2011-07-09 20:01 -0400
        Re: Very good news from AMD "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-07-09 23:46 -0700
          Re: Very good news from AMD Jason Riedy <jason@lovesgoodfood.com> - 2011-07-10 13:34 -0400
            Re: Very good news from AMD "Andy \"Krazy\" Glew" <andy@SPAM.comp-arch.net> - 2011-07-10 12:23 -0700
    Re: Very good news from AMD Quadibloc <jsavard@ecn.ab.ca> - 2011-07-08 18:14 -0700
    Re: Very good news from AMD Quadibloc <jsavard@ecn.ab.ca> - 2011-07-09 10:19 -0700
  Re: Very good news from AMD Terje Mathisen <"terje.mathisen at tmsw.no"> - 2011-07-08 23:11 +0200
  Re: Very good news from AMD "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2011-07-10 09:39 +0200
    Re: Very good news from AMD "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2011-07-11 10:37 +0200
      Re: Very good news from AMD "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2011-07-12 03:55 +0200
        Re: Very good news from AMD "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2011-07-12 04:05 +0200

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