> On Feb 19, 2017, at 12:14am, Oswin Krause <oswin.kra...@ruhr-uni-bochum.de> > wrote: > > Hi, > > I would argue you have some serious problem with your setup if copying of 1MB > takes time in the order of minutes (and even if its milliseconds, i would > consider this as way too much).
Hi Oswin, Yes, I believe there is a problem, but I don’t know what to debug. > I am also concerned that your new cpu timing is 0. Why? Caching is a good cause for just 1M items. > that resizing takes longer on a gpu is expected as you are doing something > way more complicated when allocating storage on the gpu, compared to a cpu. > > Also consider doing some real work. computing the norm of a 1MB vector is not > really something one would consider the gpu for. All simple vector > operations/reductions are a pain to get fast on a gpu. compare matrix-matrix > multiplications or similar. Thanks, I will try ASAP with more complex operations. Thank you! ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ ViennaCL-devel mailing list ViennaCL-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/viennacl-devel
