I have a problem using factor() in a thread. Consider the following:
sage: class FactorThread(Thread):
....: def run(self):
....: factor(2^50-1)
....:
sage: test = FactorThread()
sage: test.start()
Exception in thread Thread-3:
Traceback (most recent call last):
File "/Library/Sage/3.4/local/lib/python/threading.py", line 486, in
__bootstrap_inner
self.run()
File "<ipython console>", line 3, in run
File "/Library/Sage/3.4/local/lib/python2.5/site-packages/sage/rings/
arith.py", line 2027, in factor
int_=int_, debug_level=verbose, proof=proof), unit)
File "/Library/Sage/3.4/local/lib/python2.5/site-packages/sage/rings/
arith.py", line 1849, in __factor_using_pari
prev = pari.get_debug_level()
File "gen.pyx", line 7871, in
sage.libs.pari.gen.PariInstance.get_debug_level (sage/libs/pari/gen.c:
32133)
File "gen.pyx", line 7859, in
sage.libs.pari.gen.PariInstance.default (sage/libs/pari/gen.c:32038)
File "gen.pyx", line 9044, in sage.libs.pari.gen._pari_trap (sage/
libs/pari/gen.c:38611)
PariError: (7)
There seems to be a problem using pari in a new thread.
Any suggestions?
Should I report this on SageTrac?
Jérôme Tremblay
LaCIM, Montréal, Canada
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