Article: CELL Microprocessor III
By: mas ((Not Given)), August 2, 2005 12:53 pm
Room: Moderated Discussions
mas () on 8/2/05 wrote:
---------------------------
>David Kanter (dkanter@realworldtech.com) on 8/2/05 wrote:
>---------------------------
>>David Wang has finished up a third article on the CELL microprocessor at Real World
>>Technologies. The third article examines some recent revisions to the CELL processor
>>and theorizes on the cause of these changes, inconsistencies in the claimed computational
>>power of the PS3, the CELL programming model and the power characteristics of CELL.
>>
>>The address for the article is:
>>
>>http://www.realworldtech.com/page.cfm?ArticleID=RWT072405191325
>>
>>
>>Kudos to David for this great read.
>>
>>
>>Enjoy,
>>
>>
>>David Kanter
>
>Yes, another fine job. So with 7 SPEs we can say for every cycle the SPEs provide
>2 DP FMADD and the PPE 1 DP FMADD giving 6 DP flops/cycle. 3.2 Ghz gives 19.2 peak
>DP GFlops which means for reference that I2/P5 could match this peak at 4.8 Ghz
>although how much a Cell could sustain in practice is not certain. Coincidentally
>by having 3 PPEs the Xenon in Xbox 360 could match that DP figure with its SP rate
>being 76.8 Gflops vs Cell's 204.8 so it doesn't look so outclassed as one would
>think given Cell's hype. I have also heard development Cell kits are only at 2.4
>Ghz. Anyway they both sound like great distributed computing clients I hope Sony
>and Microsoft allow them to be used in that ancillary fashion.
>
Actually considering I2/P5 will be/are dual-core they only need 2.4 Ghz per chip and x86 4.8 Ghz per dual-core chip which they are all knocking on.
---------------------------
>David Kanter (dkanter@realworldtech.com) on 8/2/05 wrote:
>---------------------------
>>David Wang has finished up a third article on the CELL microprocessor at Real World
>>Technologies. The third article examines some recent revisions to the CELL processor
>>and theorizes on the cause of these changes, inconsistencies in the claimed computational
>>power of the PS3, the CELL programming model and the power characteristics of CELL.
>>
>>The address for the article is:
>>
>>http://www.realworldtech.com/page.cfm?ArticleID=RWT072405191325
>>
>>
>>Kudos to David for this great read.
>>
>>
>>Enjoy,
>>
>>
>>David Kanter
>
>Yes, another fine job. So with 7 SPEs we can say for every cycle the SPEs provide
>2 DP FMADD and the PPE 1 DP FMADD giving 6 DP flops/cycle. 3.2 Ghz gives 19.2 peak
>DP GFlops which means for reference that I2/P5 could match this peak at 4.8 Ghz
>although how much a Cell could sustain in practice is not certain. Coincidentally
>by having 3 PPEs the Xenon in Xbox 360 could match that DP figure with its SP rate
>being 76.8 Gflops vs Cell's 204.8 so it doesn't look so outclassed as one would
>think given Cell's hype. I have also heard development Cell kits are only at 2.4
>Ghz. Anyway they both sound like great distributed computing clients I hope Sony
>and Microsoft allow them to be used in that ancillary fashion.
>
Actually considering I2/P5 will be/are dual-core they only need 2.4 Ghz per chip and x86 4.8 Ghz per dual-core chip which they are all knocking on.
Topic | Posted By | Date |
---|---|---|
New CELL Article Online | David Kanter | 2005/08/02 11:32 AM |
New CELL Article Online | mas | 2005/08/02 12:46 PM |
New CELL Article Online | mas | 2005/08/02 12:53 PM |
New CELL Article Online | David Wang | 2005/08/02 01:46 PM |
New CELL Article Online | fastpathguru | 2005/08/02 04:05 PM |
New CELL Article Online | David Wang | 2005/08/02 06:27 PM |
New CELL Article Online | Panajev2001a | 2005/08/03 03:26 AM |
New CELL Article Online | David Wang | 2005/08/03 11:28 AM |
New CELL Article Online | Deadmeat | 2005/08/04 01:05 PM |
New CELL Article Online | David Wang | 2005/08/04 05:47 PM |
New CELL Article Online | Deadmeat | 2005/08/04 07:04 PM |
New CELL Article Online | john evans | 2005/08/04 08:30 PM |
New CELL Article Online | Deadmeat | 2005/08/05 12:10 PM |
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New CELL Article Online | fastpathguru | 2005/08/05 10:36 PM |
New CELL Article Online | john evans | 2005/08/05 10:51 PM |
New CELL Article Online | Deadmeat | 2005/08/06 04:09 AM |
New CELL Article Online | fastpathguru | 2005/08/06 06:29 AM |
New CELL Article Online | Deadmeat | 2005/08/07 04:06 PM |
New CELL Article Online | David Wang | 2005/08/04 09:03 PM |
New CELL Article Online | Deadmeat | 2005/08/05 12:21 PM |
New CELL Article Online | David Wang | 2005/08/05 11:51 PM |
New CELL Article Online | David Wang | 2005/08/06 12:00 AM |
New CELL Article Online | Deadmeat | 2005/08/07 03:39 PM |
New CELL Article Online | David Wang | 2005/08/08 01:57 PM |
New CELL Article Online | Deadmeat | 2005/08/08 02:55 PM |
New CELL Article Online | David Wang | 2005/08/08 03:37 PM |
New CELL Article Online | Deadmeat | 2005/08/08 05:05 PM |
New CELL Article Online | David Wang | 2005/08/08 05:47 PM |
New CELL Article Online | Deadmeat | 2005/08/08 06:25 PM |
Implausible at best, irrational most likely... | David Kanter | 2005/08/08 06:51 PM |
Implausible at best, irrational most likely... | Deadmeat | 2005/08/09 10:26 AM |
New CELL Article Online | David Wang | 2005/08/08 07:46 PM |
New CELL Article Online | Deadmeat | 2005/08/09 10:36 AM |
New CELL Article Online | David Wang | 2005/08/09 11:12 AM |
New CELL Article Online | Deadmeat | 2005/08/09 01:26 PM |
New CELL Article Online | David Wang | 2005/08/09 02:36 PM |
New CELL Article Online | Aaron Spink | 2005/08/09 02:57 PM |
New CELL Article Online | David Wang | 2005/08/10 10:06 AM |
New CELL Article Online | Serge Monkewitz | 2005/08/09 01:18 PM |
New CELL Article Online | Deadmeat | 2005/08/09 01:30 PM |
New CELL Article Online | Vitaly Vidmirov | 2005/08/11 01:36 AM |
New CELL Article Online | Anonymous | 2005/08/03 04:11 PM |
New CELL Article Online | fastpathguru | 2005/08/03 05:19 PM |
New CELL Article Online | mas | 2005/08/03 07:59 PM |
New CELL Article Online | José Javier Zarate | 2005/08/04 05:20 AM |
New CELL Article Online | mas | 2005/08/04 05:27 AM |
New CELL Article Online | mas | 2005/08/05 06:50 AM |
New CELL Article Online | PiedPiper | 2005/08/02 09:02 PM |