On 12/12/13 11:27, Pieter De Wit wrote: > Hi List, > > Given the recent work done with techs like CUDA etc. - has the idea been > floated to use the video card for RAID parity calculations vs the CPU ? > Bitcoin and plenty others have shown the true speed of these cards. This > might be a cheaper version of a RAID card. > > Cheers, > > Pieter I am almost certain that you /could/ use a graphics card to do parity calculations faster than a cpu core. However, even the newly proposed multi-parity calculations are not a big challenge for a modern cpu. A bigger issue is getting optimal threading so that multiple cores (or at least threads) can be used at the same time, and this work is well under way already. Once that work is completed, my guess is that I/O, cache or memory bandwidth will be the bottleneck for big raid arrays rather than cpu power - and using graphics cards will not help there. David -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
