I've opened ticket #29600. <https://trac.sagemath.org/ticket/29600#ticket>
Best, Sebastian On Monday, April 27, 2020 at 5:04:28 AM UTC+2, Travis Scrimshaw wrote: > > I also suspect it comes from some kind of rounding or precision issue, > likely in MPFR since nearly all of the computations are done there. At > least this is not super pressing since the Bober implementation is not the > default implementation, but it is definitely something that should be fixed. > > Best, > Travis > > > On Sunday, April 26, 2020 at 6:03:30 AM UTC+10, Sebastian Oehms wrote: >> >> see also #28549 <https://trac.sagemath.org/ticket/28549>. >> >> On Monday, April 20, 2020 at 9:23:52 AM UTC+2, Sebastian Oehms wrote: >>> >>> The existenz of the problem already appeared in Friedrich Wiemer's >>> status report >>> <https://groups.google.com/forum/#!searchin/sage-devel/Windows$20Subsystem/sage-devel/WoEWxYmwQnI/-LkPAc8VBAAJ> >>> >>> on Sage under Windows 10 using the Windows Subsystem for Linux (WSL). >>> >>> Now, that I have my office equipment (including a Windows 10 machine) at >>> home, I took the occasion to install und play with WSL (using the Ubuntu >>> App). I build Sage version 9.1.rc0 and run all doctests (like Friedrich >>> did). The list of failing doctests (see the attached file) is not far from >>> the corresponding list in Friedrich's log-file. Some issues disappeared >>> while others remained and new ones have been added. But, the first issue in >>> both lists is remarkable: >>> >>> *On WSL:* >>> >>> sage: number_of_partitions(241, algorithm='bober') >>> 114540884553039 >>> sage: number_of_partitions(241) >>> 114540884553038 >>> >>> >>> *whereas on proper Ubuntu (same Sage version) or Cygwin on the same >>> machine (but stable 9.0):* >>> >>> sage: number_of_partitions(241, algorithm='bober') >>> 114540884553038 >>> sage: number_of_partitions(241) >>> 114540884553038 >>> >>> I think, that is an issue which can damage trust even thought it >>> probably is not caused by Sage. Shouldn't we trace that back? To me it >>> looks like a rounding problem via MPFR. >>> >>> -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/54e33646-de38-4c5b-88ac-a0af4e441166%40googlegroups.com.
