I actually would like to continue working in the same worksheet while the computation happens in the background. I remember trying somethign similar in Ipython where I could use certain parallel libraries to do exactly that. Every once in a while I could check the status of the run.
On Monday, June 2, 2014 7:31:48 AM UTC-4, P Purkayastha wrote: > > > > On Monday, June 2, 2014 8:39:32 AM UTC+8, William wrote: >> >> On Sun, Jun 1, 2014 at 5:26 PM, Fred Gruber <fgr...@gmail.com> wrote: >> > Hello >> > Is it possible to run a process in the background in a sage notebook? >> > >> > I would like to run a process that takes a long time in the background >> and >> > just print the status in a log file. This way I could continue working >> on >> > the notebook on other stuff and check the log file once in a while. >> > >> > How to do this? >> >> In SageMathCloud (https://cloud.sagemath.com) I figured out how to do >> this (due to somebody else's request) and implemented it. You put >> %fork at the top of a cell, and it will start running as a separate >> forked off process in the background: >> >> %fork >> sleep(5) >> a = 10 >> >> When that cell terminates, any global variables it set will get set in >> your worksheet, as long as they are pickle-able. In particular, the >> above will set a to 10, after 5 seconds. >> >> This functionality is not available in sagenb.org or the notebook that >> comes with Sage, and very likely not with ipython. It required some >> nontrivial special UI support, so wouldn't be trivial to port. >> >> >> > Why not? If I understand correctly, the OP wants to run a computation > without having to keep the browser open (or wants to navigate away to a > different worksheet). > > If you run the sagenb notebook as a server, then it will continue running > until one explicitly quits the worksheet or server. Each worksheet has its > own sage process. So, it is entirely possible to let a worksheet continue > running (and computing something), while we close the browser or navigate > away to a different worksheet. > > For example, we can start the notebook in a screen session like this: > sage -n interface='' automatic_login=False > > and then connect to localhost from the browser, start a worksheet and a > computation in the worksheet. Then we can simply close the tab containing > the worksheet. Later we can reconnect to the local server and access the > worksheet again. > > > >> > >> > thanks >> > Fred >> > >> > -- >> > 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...@googlegroups.com. >> > To post to this group, send email to sage-s...@googlegroups.com. >> > Visit this group at http://groups.google.com/group/sage-support. >> > For more options, visit https://groups.google.com/d/optout. >> >> >> >> -- >> William Stein >> Professor of Mathematics >> University of Washington >> http://wstein.org >> > -- 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 http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
