On Friday, February 9, 2018 at 11:03:11 AM UTC, Marco Caliari wrote: > > Hi, the following script > > def test(m,c,precision): > M = 3*m > RRR = RealField(prec = precision) > coef02 = [RRR(1/i) for i in [1..M+1]] > g = coef02[M] > for i in [M-1..2,step=-1]: > g = x*g+coef02[i] > ME = 32 > disk = [exp (2*pi.n(precision)*I*i/ME) for i in range(ME)] > epsilon1 = max([abs(g(x=z)) for z in disk]) > return > m = 40 > for c in [1/2..10,step=1/2]: > for ell in [1..10]: > test(m,c,165) > > Indeed, comparing the objects on the heap that weren't there before the loop I find:

[(<type 'builtin_function_or_method'>, 1), (<type 'sage.rings.rational.Rational'>, 1), (<type 'instancemethod'>, 1), (<type 'set'>, 1), (<type 'dict'>, 1), (<type 'tuple'>, 3), (<type 'list'>, 3), (<type 'frame'>, 3), (<type 'weakref'>, 28), (<type 'sage.rings.real_mpfi.RealIntervalFieldElement'>, 6200), (<type 'sage.rings.real_mpfr.RealNumber'>, 29999), (<type 'sage.rings.complex_number.ComplexNumber'>, 1457000)] The real numbers mostly seem to be approximations to pi. Using objgraph.show_backrefs I'm not getting anything useful. We're definitely leaking but I wasn't able to identify a cache that's keeping references. Is that any change that we're doing something wrong with an INCREF/DECREF ? -- 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.