[sage-devel] Re: inconsistency in computation of differential of a map between manifolds

2019-08-27 Thread Simon King
Hi Eric, On 2019-08-27, Eric Gourgoulhon wrote: > To avoid such mistake, you can run set_inverse() with the option > verbose=True. Then the provided inverse transform is checked. Is the option really called "verbose=True"? Not "check=True", like in most other cases? Best regards, Simon -- Y

[sage-devel] Re: inconsistency in computation of differential of a map between manifolds

2019-08-27 Thread Eric Gourgoulhon
Le mardi 27 août 2019 16:51:20 UTC+2, Andreas Hermann a écrit : > > I am sorry, but this is a stupid mistake. The function defined via > set_inverse() is not the inverse function since the first entry of atan2 is > by definition the y-coordinate. If one swaps u and v in atan2 then > everything i

[sage-devel] Re: error building barvinok (sage 8.9.beta8 + system NTL)

2019-08-27 Thread Antonio Rojas
El martes, 27 de agosto de 2019, 16:25:12 (UTC+2), Victor Shoup escribió: > > I reviewed some comments which mentioned a problem with ntl and threads. > I’m happy to fix that, but I don’t think I understand what the issue is. > Can anyone explain? Thanks. Hi Victor, IIRC I reported this to y

Re: [sage-devel] Re: slowness in copy of integer sparse matrices

2019-08-27 Thread Nils Bruin
On Tuesday, August 27, 2019 at 10:40:53 AM UTC-7, Nils Bruin wrote: > > > and as a row-sparse list presentation: > > sage: %time v=[(i,j,1) for i in [0..1429] for j in [0..82]] > CPU times: user 96.9 ms, sys: 13.2 ms, total: 110 ms > Wall time: 105 ms > sage: %time v={(i,j):1 for i in [0..1429] f

Re: [sage-devel] Re: slowness in copy of integer sparse matrices

2019-08-27 Thread Nils Bruin
On Tuesday, August 27, 2019 at 9:29:31 AM UTC-7, E. Madison Bray wrote: > > On Tue, Aug 27, 2019 at 3:19 PM Frédéric Chapoton > wrote: > > > > I can create a ticket, but I would like first to be sure that is a real > issue. > > Do you have any previous benchmarks to compare it to? Even if you

Re: [sage-devel] Re: slowness in copy of integer sparse matrices

2019-08-27 Thread E. Madison Bray
On Tue, Aug 27, 2019 at 3:19 PM Frédéric Chapoton wrote: > > I can create a ticket, but I would like first to be sure that is a real issue. Do you have any previous benchmarks to compare it to? Even if you think, for some reason (?) that it's "too slow" I don't know that it's that meaningful a s

[sage-devel] Re: inconsistency in computation of differential of a map between manifolds

2019-08-27 Thread Andreas Hermann
I am sorry, but this is a stupid mistake. The function defined via set_inverse() is not the inverse function since the first entry of atan2 is by definition the y-coordinate. If one swaps u and v in atan2 then everything is fine. -- You received this message because you are subscribed to the G

Re: [sage-devel] error building barvinok (sage 8.9.beta8 + system NTL)

2019-08-27 Thread Dima Pasechnik
On Tue, 27 Aug 2019 17:25 Victor Shoup, wrote: > I reviewed some comments which mentioned a problem with ntl and threads. > I’m happy to fix that, but I don’t think I understand what the issue is. > Can anyone explain? if NTL is built with multithreading then it does not link in the correspondi

[sage-devel] error building barvinok (sage 8.9.beta8 + system NTL)

2019-08-27 Thread Victor Shoup
I reviewed some comments which mentioned a problem with ntl and threads. I’m happy to fix that, but I don’t think I understand what the issue is. Can anyone explain? Thanks. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from th

[sage-devel] Re: slowness in copy of integer sparse matrices

2019-08-27 Thread Frédéric Chapoton
I can create a ticket, but I would like first to be sure that is a real issue. Frédéric Le lundi 26 août 2019 11:29:44 UTC+2, Simon King a écrit : > > Hi all, > > did someone open a ticket for that issue? > > Best regards, > Simon > > > On 2019-08-24, Nils Bruin > wrote: > > It seems to be