Dear Dima, thank you so much. It works :-). I would suggest to hint at this solution in the error message. As soon as gap does not take sage with it anymore when running out of memory. Best Simon
On Tuesday, September 18, 2018 at 10:10:06 PM UTC+2, Dima Pasechnik wrote: > > The arguments with which libgap is started are set up in > src/sage/libs/gap/util.pyx > in the function initialize() > - setting various members of argv. In particular look for what `-o` is > set to. > By digging through the code, it appears that it's set by > set_gap_memory_pool_size() > from interfaces/gap.py > > So if you call set_gap_memory_pool_size with a big value, before > starting libgap, you might get > more (I didn't try) > > HTH, > Dima > On Tue, Sep 18, 2018 at 9:38 PM Simon Brandhorst <sbran...@web.de > <javascript:>> wrote: > > > > sage: V = libgap.GF(13)^500 > > sage: S = V.Subspaces(50) > > sage: S.List() > > gap: cannot extend the workspace any more! > > > > > > As expected the computation runs out of memory. However, there is still > a lot of unused memory. > > > > Before: > > > > total used free shared > buff/cache available > > Mem: 15G 1.8G 11G 290M 2.3G > 13G > > Swap: 39G 0B 39G > > > > Right before termination > > > > Mem: 15G 5.7G 7.6G 287M 2.3G > 9.2G > > Swap: 39G 0B 39G > > > > After > > total used free shared > buff/cache available > > Mem: 15G 1.6G 11G 287M 2.3G > 13G > > Swap: 39G 0B 39G > > > > In > > https://groups.google.com/forum/#!topic/sage-support/m6R8_NKepyQ > > it is suggested to increase the swap space. > > However with 40 GB of swap I can only use about 4GB. > > On a different machine with 64 GB of swap I can use about 8 GB. > > However assigning more swap is impossible as I start to run out of hard > disk space. > > Can you reproduce this behavior? Suggestions? > > > > -- > > 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+...@googlegroups.com <javascript:>. > > To post to this group, send email to sage-...@googlegroups.com > <javascript:>. > > Visit this group at https://groups.google.com/group/sage-devel. > > For more options, visit https://groups.google.com/d/optout. > -- 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.
