Hi Markus, can you explain to us how did you modify this in Singular? I tried running your snippet with Cyclic7 and cancelled it after an hour of computation.
On Friday, December 7, 2018 at 1:53:18 AM UTC-5, Markus Wageringel wrote: > > Am Donnerstag, 6. Dezember 2018 11:41:23 UTC+1 schrieb Bill Hart: > >> All the other systems are using modular methods here, so Roman use the >> modstd library (the command is modStd) in Singular to get those timings. >> Indeed cyclic7 over Q takes about 20s on my laptop in Singular using this >> approach. >> > > Thanks for the hint. With that, I get the following times over ℚ. > > ℚ | singular (4) singular (16) > cyclic7 | 28.79 21.27 > cyclic8 | 1109.03 623.98 > katsura9 | 28.07 25.14 > katsura10 | 329.86 172.15 > alea6 | 3053.70 2549.42 > eco12 | 4879.15 1888.11 > jason210 | 122.07 106.33 > noon9 | 2339.98 1502.74 > > > Am Donnerstag, 6. Dezember 2018 20:00:52 UTC+1 schrieb parisse: > >> From giac, call gbasis with the list of polynomial and the list of the >> first block indets. >> > > That worked. Thanks. > > > The timings on Q do not reflect the timings of native giac, there must be >> some misconfiguration or something wrong with the sage interface. Higher >> timings with 16 threads instead of 4 for a modular algorithm is suspicious. >> > > 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]? > > [1] > https://www-fourier.ujf-grenoble.fr/~parisse/giac/examples/groebner/cyclic8 > [2] > https://github.com/sagemath/sage/tree/8.5.beta6/build/pkgs/giac/patches > -- 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/d6279bae-9c4f-47e0-af42-4f5d694985cf%40googlegroups.com.
