Re: [sage-support] Sagenb.org
On Sep 14, 2012, at 14:53 , Dan Aldrich wrote: Haven't been able to access sagenb.org or .com for over a day. Is this a long term outage? William reported a relatively short-term outage at UW.edu in the math department server area that appears to be over now. Justin -- Justin C. Walker, Curmudgeon at Large Director Institute for the Enhancement of the Director's income --- -- They said it couldn't be done, but sometimes, it doesn't work out that way. - Casey Stengel -- -- You received this message because you are subscribed to the Google Groups sage-support group. 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. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Sagenb.org
Haven't been able to access sagenb.org or .com for over a day. Is this a long term outage? Thank you, -d -- You received this message because you are subscribed to the Google Groups sage-support group. 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. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] sagenb.org timeout
I'd been running some computations on sagenb.org which involved (implicitly) asking Singular to make some groebner basis calculations. I was never able to complete it because it would eventually appear to finish, but at that point it acted as though the worksheet was restarted (and silently -- at least if it were going to do this it would be nice to have a message). Upon reading some posts today I realized that this was happening because of a timeout parameter in the notebook. However, if I'm in the middle of a calculation I'm not idle! I understand that because the calculation is being farmed out to Singular it might look like SAGE is idle, but it isn't. Should there be a trac ticket for this? Victor -- 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
Re: [sage-support] sagenb.org timeout
I could be wrong, but I think that sagenb.org has a timeout on all computations, which may be different than any timeout due to idleness. It may reset everything every 10 minutes or so, to prevent long-running or otherwise intensive computations from using up all of the resources on the server. So I think might be a feature, not a bug. If it happens on a local notebook server that wasn't intentionally setup this way, then I think that would be a bug. On Thu, Aug 25, 2011 at 10:01 PM, VictorMiller victorsmil...@gmail.comwrote: I'd been running some computations on sagenb.org which involved (implicitly) asking Singular to make some groebner basis calculations. I was never able to complete it because it would eventually appear to finish, but at that point it acted as though the worksheet was restarted (and silently -- at least if it were going to do this it would be nice to have a message). Upon reading some posts today I realized that this was happening because of a timeout parameter in the notebook. However, if I'm in the middle of a calculation I'm not idle! I understand that because the calculation is being farmed out to Singular it might look like SAGE is idle, but it isn't. Should there be a trac ticket for this? Victor -- 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 -- 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
Re: [sage-support] sagenb.org timeout
On Thu, Aug 25, 2011 at 4:55 PM, Jonathan Bober jwbo...@gmail.com wrote: I could be wrong, but I think that sagenb.org has a timeout on all computations, which may be different than any timeout due to idleness. It may reset everything every 10 minutes or so, to prevent long-running or otherwise intensive computations from using up all of the resources on the server. So I think might be a feature, not a bug. If it happens on a local notebook server that wasn't intentionally setup this way, then I think that would be a bug. This is a feature, which I intentionally setup for exactly the reason you explained above. For a version of http://sagenb.org without timeouts, please contact our sales department and upgrade to a Pro Subscription (tm) for just $36/year. (Just kidding!) Since you're Victor Miller, if you don't have account on my cluster, just let me know (off list), and I'll create one for you. Then you can do intensive calculation on your own Sage notebook server, if you want. -- William On Thu, Aug 25, 2011 at 10:01 PM, VictorMiller victorsmil...@gmail.com wrote: I'd been running some computations on sagenb.org which involved (implicitly) asking Singular to make some groebner basis calculations. I was never able to complete it because it would eventually appear to finish, but at that point it acted as though the worksheet was restarted (and silently -- at least if it were going to do this it would be nice to have a message). Upon reading some posts today I realized that this was happening because of a timeout parameter in the notebook. However, if I'm in the middle of a calculation I'm not idle! I understand that because the calculation is being farmed out to Singular it might look like SAGE is idle, but it isn't. Should there be a trac ticket for this? Victor -- 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 -- 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
[sage-support] sagenb.org
Is sagenb.org having problems? I tried to log on yesterday (and today, just now), and it said that my username was unknown! Victor -- 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
[sage-support] sagenb.org server(s)
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? Thomas L. Scofield Associate Professor Department of Mathematics and Statistics Calvin College -- 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
Re: [sage-support] sagenb.org server(s)
This is a such a big problem that a conference recently was dedicated to fixing it. Sometime this year there should be a new notebook system designed for dealing with lots of users. There are alternative notebook servers such as http://alpha.sagenb.org, but I don't recommend telling 75 students to use it. The notebook was not designed to be used by many users at once. So I recommend waiting until it gets redesigned for scalability. On Mon, Feb 7, 2011 at 9:59 AM, Thomas Scofield scofi...@calvin.edu 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? Thomas L. Scofield Associate Professor Department of Mathematics and Statistics Calvin College -- 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 -- 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
Re: [sage-support] sagenb.org server(s)
Same here. I've just about given up on SageNB due to availability problems. A few times I tried to give a demo to sing praises of Sagenb, couldn't log on. Not good.Alpha seems better, but is there a way to mover over/sync your notebooks from the main server?Thanks,-d -- 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
Re: [sage-support] sagenb.org server(s)
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
Re: [sage-support] sagenb.org server(s)
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? I have had a lot of lag on the sage servers this past semester. However, I cannot say if its a problem in my school's network which is notorious for lag So, I switched to using the binaries for Ubuntu. I gave every one of my students a copy of the binary and we are using that instead this semester. So far, all is going well! HTH, A. Jorge Garcia Applied Math and CompSci http://shadowfaxrant.blogspot.com http://www.youtube.com/calcpage2009 -- 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
[sage-support] sagenb.org problem
Last night I logged into sagenb.org and created a new worksheet. At the end I pressed Save and Quit. However, when I logged in this morning there was no trace of the worksheet. Can it be recovered? Victor -- 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
[sage-support] sagenb.org
Earlier today I signed up through sagenb.org so that I can publish my worksheet. The signing up process was simple, but whenever I try to login, I receive errors. I've checked my login information and it is accurate. Is there anyone else having problems? Eric --~--~-~--~~~---~--~~ 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 URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] sagenb.org
Hi, I've created a brand new sagenb.org VMware virtual machine. It's state is the same as the sagenb.org virtual when it is was fork bombed. The main difference is that now: 1. It is running in a VMware virtual machine on my desktop. The virtual machine has 2GB RAM, 10GB swap, and 4 2.6Ghz Xeon cores. I don't know if this will hold up to the load at all -- we'll see. 2. I made a snapshot, so if the server gets hosed, it's a trivial mouse click to fix it. 3. It uses http instead of https, so nobody will get those invalid security certificate warnings. This means, of course, that people can sniff passwords -- I say, who cares, given that anybody can pretty easily see the data of any other user and this is just a free public resource for evaluation purposes. 4. The virtual machine itself is currently on an external USB disk, so disk IO may be slow. I may have to move some data around to improve this. 5. I set the sage server to save state to disk only *once* per day, instead of the default of every 6 minutes. This is the operation that still made the server feel slow every few minutes, and is now much less necessary, since all worksheets are always stored on disk as files anyways. Please try it out. Let me know if there is any particular free/open source software that you want me to install, which I forgot to install. (E.g., something for tex or whatever.) Harald: Definitely feel free to add a link to this to the sagemath.org website. Once this particular vmware image gets some usage, it could easily be adapted into something that I redistribute. It's a 64-bit Ubuntu linux install actually. -- William Stein Associate 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
