#17686: pexpect interfaces don't close logfile
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Reporter: alexc | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.5
Component: interfaces | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by jdemeyer):
* component: number theory => interfaces
Old description:
> I get the following error after a runtime of several minutes. If I change
> parts of my code, the error occurs in different places. Running just
> snippets of the code does not produce the error. I'm running sage 6.4 on
> a fresh installation of Ubuntu 14.04 64bit on a fairly powerful computer.
>
> The only previous mention of this error that I could find is
> http://trac.sagemath.org/ticket/9866.
>
> Can anyone suggest workarounds?
>
> Let me know what additional information I can provide to help.
>
> {{{
> Traceback (most recent call last):
> File "RHS.py", line 275, in DokchitserDirichlet
> L.init_coeffs('chi(k)', 1, 'conj(chi(k))', pari_precode=pari_precode)
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/lfunctions/dokchitser.py", line 340, in init_coeffs
> gp = self.gp()
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/lfunctions/dokchitser.py", line 225, in gp
> g.read('computel.gp')
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/interfaces/expect.py", line 634, in read
> self.eval(self._read_in_file_command(filename))
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/interfaces/expect.py", line 1223, in eval
> for L in code.split('\n') if L != ''])
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/interfaces/gp.py", line 400, in _eval_line
> wait_for_prompt=wait_for_prompt)
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/interfaces/expect.py", line 817, in _eval_line
> self._start()
> File "/home/blatm/sage/sage-6.4.1-x86_64-Linux1404/local/lib/python2.7
> /site-packages/sage/interfaces/expect.py", line 432, in _start
> self.name(), cmd, self._install_hints()))
> RuntimeError: unable to start pari because the command 'gp --emacs
> --quiet --stacksize 10000000' failed
>
> Exception RuntimeError: RuntimeError('sys.path must be a list of
> directory names',) in <bound method Dokchitser.__del__ of Dokchitser
> L-series of conductor 7 and weight 1> ignored
> }}}
New description:
This crashes because the `Dokchitser` instances do not close the logfile:
{{{
sage: for i in range(2000):
....: D = Dokchitser(conductor=1, gammaV=[0], weight=1, eps=1,
poles=[1], residues=[-1], init='1')
}}}
--
--
Ticket URL: <http://trac.sagemath.org/ticket/17686#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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