This now has every commit from 0.7.3 on: http://www.moorepants.info/misc/sympy-asv/#diff.TimeJacobian.time_subs
first major slow down: new caching added slight speedup: fastcache optional dep added another speedup: cache increased from 500 to 1000 slight slow down: c removed from core This goes for subs and jacobian. Jason moorepants.info +01 530-601-9791 On Mon, Jul 20, 2015 at 9:38 AM, Peter Brady <petertbr...@gmail.com> wrote: > Elaborating a bit, the 2 main additional costs of a bounded cache compared > to an unbounded one are: > > 1. The extra cost of managing the LRU machinery (fastcache alleviates > this by doing all the necessary management at the C level) > 2. The cost of repeated cache misses because the cache size is not > appropriate for a particular problem. > > Problem 2 is much harder to quantify and solve efficiently and could > easily be the cause of the significant slowdown on some tests. We could > just make the cache bigger... > > On Monday, July 20, 2015 at 10:30:11 AM UTC-6, Peter Brady wrote: >> >> We visited the jacobian issue a while ago and I think the takeaway was >> that a larger cache size (about 2-3000) sped things up considerably. Not >> sure if this is the same issue though. >> >> On Monday, July 20, 2015 at 10:25:24 AM UTC-6, Ondřej Čertík wrote: >>> >>> On Mon, Jul 20, 2015 at 1:02 AM, Jason Moore <moore...@gmail.com> >>> wrote: >>> > Yes, it seems that the new cache commit is the slow down in these >>> tests. >>> >>> If this is the case, then I know that Peter Brady who wrote it will be >>> interested in this. We should get to the bottom of the issue. >>> >>> Ondrej >>> >> -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/a2484c2c-a031-46f9-8dc9-827efbc48927%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/a2484c2c-a031-46f9-8dc9-827efbc48927%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAP7f1AhWxQBUQY9fkJVmxOcAPuz%2BJefBOdmTDMNO5f1cSoHfOA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
