On Friday, 7 December 2018 07:53:18 UTC+1, Markus Wageringel wrote:
<SNIP> While there will be some overhead due to the conversion from and to Sage, > it is the same in both cases. In fact, I observe similar times with the > native Giac that is installed into the Sage environment, when applied to > the Giac input file cyclic8 you linked above [1]: 0m27.309s using 4 threads > and 1m43.493s using 16. Indeed, CPU usage rarely surpasses 400% during the > computation. I am not sure what could be wrong here. Perhaps it is > something related to the patches of the Giac in Sage [2]? > How many physical cores do you have on the machine (not logical cores), and how many CPU sockets and what is the cache structure? (I assume it is at least 16 physical cores, but I'm asking more because this sort of thing often happens because of shared caches.) -- 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 post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
