Also, PS3 has higher power consumption and thus heavier costs :-) On Mon, Apr 25, 2011 at 10:47 PM, <sascha.kriss...@web.de> wrote:
> On Mon, Apr 25, 2011 at 10:18:11PM +0200, Sylvain Munaut wrote: > > Hi, > > > > > Apologies if this subject has already been covered, but has anyone > attempted > > > to do table generations using PS3 hardware? > > > > I did a few back-of-the-enveloppe calculation and it ended up being in > > the same order of magnitude as the ATI GPU cards ... but less > > convenient (need to re-implement / re-test / re-rebug and not really > > faster), so I didn't pursue. > > > > The performance on the Cell should be quite bad: > > 6 * 128bit ALU @ 3ghz > versus > 320 * 160bit ALU @ 750mhz (HD5870) > > together with the fact that the PS3 has way to little RAM for the index > files. So you could use it for generation, but since that phase is now > over, why bother. Once there was the plan to put some Cell blade clusters > to work, but it was abandoned after some initial testing of an incomplete > version of the generator. What we learnt was that it could be done, > development on PS3+linux is quite comfortable. Last time i checked, the > Cell architecture was a dead end and the current hardware is simply too > old for HPC (if you do not happen to have your code running on an existing > cluster, in that case the cost of migration may be uneconomical). > As a sidenote the ration of SRAM to ALUs is also higher on the cell > compared > to GPU, be it nvidia or ati, consequently the MIPS per square millimeter > is lower for problems which do not need excessive amounts of cache memory > like A5/1 crypto. > _______________________________________________ > A51 mailing list > A51@lists.reflextor.com > http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51 >
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