Re:CPU reliability – Linus Torvalds (2007)
by zhemao on Sunday December 08, 2013 @10:09PM
(#6872669)
Oh whoops, I guess my VLSI professor lied to me. Maybe it only happens with certain multiprocessors. But yeah, there are definitely disabled cores in a lot of processors for the reasons you mentioned.
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Re:CPU reliability – Linus Torvalds (2007)
by cantfindmypass on Monday December 09, 2013 @02:38AM
(#6873236)
ISTR the PS3's Cell processor had eight physical cores to increase yeild.
Re:CPU reliability – Linus Torvalds (2007)
by zhemao on Thursday December 12, 2013 @11:17AM
(#6895201)
You're mostly right
https://en.wikipedia.org/wiki/PlayStation_3#Technical_specif...
The cell processor had a main PowerPC core and eight floating-point SIMD co-processors called synergistic processing elements (SPE). For the PS3, one of the eight SPEs was disabled and another was reserved for the operating system, leaving the other six for developers.