>> than say a typical modern PC CPU.. But, given appropriate software, is it >> a better $/FLOPS or W/FLOPS deal to get 100 cellphone CPUs or 1 superduper >> PC CPU? > > The classical CPU core seems to be regressing to the role of a co-processor, > and real heavy lifting is being done with OpenCL, a la APU.
my colleagues who attended SC12 say that OpenCL was almost entirely absent (along with AMD :( ). it's not clear how generally applicable Cuda's SIMT programming model is. and having it as a separate ISA (versus traditional cores) is a problem, complexity-wise. > GPU into every mobile device CPU. As it's memory starved, there's already > memory stacking > http://www.ifixit.com/Teardown/Apple+A6+Teardown/10528/1?singlePage > I presume Exynos 5 teardown would not look much different. samsung has been producing stacked chips for quite a while - back to at least the a5 generation, probably before that (stacked dram, stacked flash too I think.) > The interesting part about forthcoming real (TSV) stacking > that you can mix hybrid memories, whether SRAM, MRAM, DRAM, flash, > as you don't have to be process compatible as with true embedded > memory (though MRAM might well be process compatible with CPUs). stacking is great, but not that much different from MCMs, is it? _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
