My guess is that the output is buffered, i.e. it does not get actually written out unti lthe buffer reaches some size. You can get python to flush the output after every output statement and then see what is happening a bit better.
John On 7 June 2017 at 16:33, Robin van der veer <[email protected]> wrote: > Hi, > > I'm running a windows 10 host, and I have sage running in virtualbox; I just > downloaded the .ova file from the website. > I have virutalbox set up so it uses 6/8 of my cores, and 5GB of mem. > It could be the case the 6 processes combined exceed this 5GB. Would this > explain Sage quitting in the way I described? > > Op woensdag 7 juni 2017 17:30:37 UTC+2 schreef Jan Groenewald: >> >> Hi >> >> >> On 7 June 2017 at 17:24, Robin van der veer <[email protected]> wrote: >>> >>> I'm running Sage on my local machine (so not the sage math cloud), and >>> some of my computations just stop with no output or error message. >>> My code looks essentially like this: >>> >>> @parallel >>> def compute(revLex): >>> long computations >>> print some stuff >>> write some stuff to files >>> return >>> >>> r = compute(L) >>> for x in r: >>> x >>> >>> When I work with small cases, everything is fine. However for bigger >>> cases the computations tend to take upwards of 2 hours, and then just stop. >>> The only reason why I know one of the computations even stopped is >>> because I'm staring at TOP in a console window and see the uptime jump from >>> 110 orso minutes to 0 minutes, meaning that one job was finished, and it >>> started working on the next. >>> When this happens no output is printen, and the file to which some stuff >>> should have been written is empty. >>> >>> What could cause this (besides a programming error on my part)? Is there >>> some timeout even when running on your local machine? Or some resource >>> limitations that just quit Sage if its using too much memory orso? >>> >>> I really hope that someone has an idea here, because each of these >>> computations takes around 2 hours, so its very impracticle to just keep >>> trying to see what works. >> >> >> What is your OS and where can you check for out of memory messages? >> >> Regards, >> Jan >> >> >> -- >> .~. >> /V\ Jan Groenewald >> /( )\ www.aims.ac.za >> ^^-^^ > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
