Changes between Initial Version and Version 1 of Ticket #11468


Ignore:
Timestamp:
06/15/11 17:51:55 (10 years ago)
Author:
jpflori
Comment:

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  • Ticket #11468

    • Property Keywords libsingular added; elliptic curves removed
    • Property Type changed from PLEASE CHANGE to defect
    • Property Summary changed from Memleak when using elliptic curves to Memleak in multi_polynomial_libsingular.pyx
  • Ticket #11468 – Description

    initial v1  
    11Using the following piece of code makes the memory footprint of sage [[BR]] grow indefinitely: [[BR]]
    22
    3 sage: K = GF(1<<50,'t') [[BR]] sage: j = K.random_element() [[BR]] sage: while 1: [[BR]] ....:    E = !EllipticCurve(j=j) [[BR]] ....:    del E [[BR]] ....: [[BR]]
     3sage: K = GF(1<<50,'t') [[BR]] sage: R.<x,y> = PolynomialRing(K)
    44
    5 This seems to be less dramatic with finite fields of char != 2 and [[BR]]inexistant for ZZ and QQ.
     5sage: a = K.random_element() [[BR]] sage: while 1: [[BR]] ....: R(a)[[BR]] ....:
    66
    7 However this makes big computations involving different elliptic curves quite inpractical.[[BR]]
     7So there is some memleak while creating elements of multivariate polynomial ring implemented with libsingular.
     8
     9See http://groups.google.com/group/sage-support/browse_thread/thread/9a8e887df34a8e9a for further discussion.