Hi, Could somebody suggest a message i can post at sagenb.org (next to the login box) explaining the situation?
On Monday, February 7, 2011, Robert Bradshaw <rober...@math.washington.edu> wrote: > On Mon, Feb 7, 2011 at 10:21 AM, Jason Grout > <jason-s...@creativetrax.com> wrote: >> On 2/7/11 11:59 AM, Thomas Scofield wrote: >>> >>> I've spent the last couple of hours frustrated at trying to log in >>> and use notebooks at sagenb.org. I was attempting to do this while >>> teaching a class, and had little to no success between 10:30 and >>> 12:20 EST (U.S.). I had this same experience about a month ago when >>> teaching a different class---probably can write off 75 students or >>> thereabouts as having seen enough frustration in an hour to never >>> want to use Sage again. >>> >>> Nevertheless, I've found remarkably few (given my 2-for-2 batting >>> average) messages like this in the list archives over the last year. >>> Is this not a problem for others, just me doing something wrong? If >>> so, can someone help me diagnose the problem? If it's a consistent >>> problem that everyone else has become so accustomed to that we just >>> don't speak of it anymore, then how can it be addressed? I'd suggest >>> to my students that they should all download a copy if it weren't >>> that so many of them are Windows users, and that looks to be >>> oppressively hard. If I could convince the IT people at my >>> institution to run a notebook server, what could I tell them about >>> numbers and power? Just what are the specs on existing sagenb >>> servers, and how many users before you notice poor performance? >> >> >> I too have noticed sagenb.org being slow or down quite a bit recently. My >> personal work-around has been to use demo.sagenb.org or our school Sage >> server for my classes. We have a Dell PowerEdge 2900 server (i.e., probably >> 5-6 years old) with 16 gig of RAM, and I have noticed no problems serving my >> classes (3 classes, probably 80 students total). We probably don't need >> that much RAM to serve just these students, but we also use the server for >> research work. You can see instructions from our setup here: >> http://wiki.sagemath.org/SageServer. >> >> My guess is that about 50-60 simultaneous users (not accounts, but >> simultaneous users) is enough to cause a severe slowdown to sagenb.org. >> That's a guess, though; I'm not sure what the actual number is. >> >> As for the future: >> >> In January, we held a Sage conference in which many people worked on >> designing a much more scalable notebook. I am working with a group of >> students on the first steps of this rewrite. >> >> There are other people also working on this rewrite or other projects which >> restructure the notebook and make it more scalable. There is funding from >> an NSF grant to work on making the notebook more scalable, so it will get >> done (i.e., there's funding and committed developer time). One project (the >> rewrite to use flask) is at the testing stage, so hopefully we will see it >> go into Sage soon. > > Sage is a victim of its own success! In response to the original > poster, this is a big pain point and something several people are > working on. > > - Robert > > -- > To post to this group, send email to sage-support@googlegroups.com > To unsubscribe from this group, send email to > sage-support+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-support > URL: http://www.sagemath.org > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
