Hi Simon, set_gap_memory_pool_size() controls the amount of memory GAP and libGAP get if started from Sage. The latter is dynamic, as opposed to "sage --gap"
Dima On Sat, Sep 29, 2018 at 7:34 AM Simon King <simon.k...@uni-jena.de> wrote: > > Hi! > > Let G be the third Conway group, S its Sylow 2-subgroup, and > N the normaliser of the centre of S in G. > > Gap is able to compute the list of double coset representatives of N in > G using the command > gap> DC := DoubleCosetRepsAndSizes(G,N,N);; > gap> Length(DC); > 7 > Actually, if I understand correctly, DC is not a list but an iterator, > but for a list of size 7 this shouldn't matter so much. > > Anyway. If I do the above computation in the Sage pexpect interface to > gap, the line > DC = G.DoubleCosetRepsAndSizes(N,N) > gives an error: > RuntimeError: Gap produced error output > Error, reached the pre-set memory limit > (change it with the -o command line option) > > executing > > __SAGE_LAST__:="__SAGE_LAST__";;DoubleCosetRepsAndSizes(\$sage1,\$sage8,\$sage8);; > > > If I recall correctly, the above worked fine a couple of years ago, when > I achieved the first computation of the mod-2 cohomology of the third > Conway group. > > So, what has changed? Is the memory limit for gap-via-pexpect different > from the memory limit of "sage -gap"? Has that memory limit changed in > the past years? How can I work around (i.e., set the memory limit of > gap-via-pexpect to the apparently sufficient memory limit used by "sage > -gap")? > > Best regards, > Simon > > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
