> flame-wars? The people in HPC who care about SP gflops are those who > understand the mathematics in their algorithms and don't want to waste > very precious memory bandwidth by unnecessarily promoting their
I'm not disagreeing, but wonder if you'd mind talking about SP-friendly algorithms a bit. I can see it in principle, but always come up short when thinking about, eg simulation-type modeling with such low-precision numbers. does someone really comb through all the calculations, looking for iffy stuff? (iffy stuff can be pretty subtle - ordering and theoretically equivalent substitutions. maybe there are compiler-based tools that perform this sort of analysis automatically?) your mention of precious bandwidth is actually relevant to one of the earlier threads - that there is an upcoming opportunity for cpu vendors to integrate decent (much bigger than cache) amounts of wide storage within the package, using 2.5d integration. if there were enough fast in-package ram, it would presumably not be worthwhile to drive any off-package ram - any speculation on that threshold? regards, mark hahn. _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
