PS3 otheros questions

YDL running on the Sony Playstation 3

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PS3 otheros questions

Postby gladoscc » 30 Apr 2012, 12:52

1) can you use RSX's 256MB ram?
2) can you use all 7 SPUs insteald of just 6?
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Re: PS3 otheros questions

Postby ppietro » 30 Apr 2012, 19:22

gladoscc wrote:1) can you use RSX's 256MB ram?
2) can you use all 7 SPUs insteald of just 6?


1. Only part of it as a virtual disk drive. We generally use that as fast swap.

2. No

Cheers,
Paul
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Re: PS3 otheros questions

Postby gladoscc » 01 May 2012, 07:24

ppietro wrote:
gladoscc wrote:1) can you use RSX's 256MB ram?
2) can you use all 7 SPUs insteald of just 6?


2. No

Cheers,
Paul

Not even with the ps3 key leak that failoverfl0w/geohot did?
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Re: PS3 otheros questions

Postby billb » 01 May 2012, 15:57

I've read that hacked PS3's may be able to take advantage of the 7th SPE under Linux, but as that is illegal in the US we generally discuss and refer to the official OtherOS features on this forum. As for me, I'm still trying to find a use for the first six. :wink: The only thing I've used them for as far as everyday use is for video filtering/scaling.
PS3 60GB [CECHA01], FW 3.15, YDL 6.2, Samsung T260HD @ 1920x1200
Powermac G4 1.25 GHz x2, 2 GB RAM, YDL 6.2
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Re: PS3 otheros questions

Postby relet » 02 May 2012, 09:32

I did use them all, the 6 spes, in my C++ AI programs.
However, if you really want them to be significant, as they said, 15 to 30 times from the x86, you really need to use spe's 128X128bit vector registers and the vector operations wisely.
Another significant of the cell is its hard threads, unlike the x86, they are using virtual threads, as long as you assign the work for the spes, you freely use the ppe for ordinary jobs without any performance penalty.
I still wonder if I can contact Fixstars to ask for a YDLPS3?
Thanks.
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