Well this is sort of the standard unixy way of doing things. One process per task.
Ultimately I was thinking of the xinetd model. My controlling process would spawn a sage process when a user "logs in" (whatever that would mean), and probably perform an appropriate redirect. There are of course many tricky isues, not the least the authentication of the user versus the controlling process. This is important since it would determine the userid and home directory for the slave process. There are many more securithy issues that would have to be dealt with. Michel On Jun 7, 12:01 am, "William Stein" <[EMAIL PROTECTED]> wrote: > On 6/6/07, Michel <[EMAIL PROTECTED]> wrote: > > > > > > > Ok I see. I wasn't aware that one sage process > > (your "server process") could serve multiple users. > > I will wait to see how things develop. > > =============================== > > In the setup I was planning it is definitely not true that any user > > can kill > > the server process. I wanted to have a bunch of users, say > > > sageuser1----sageuser10 > > > each with their own working directory > > and running a copy of sage. So there would be (at most) 10 sage > > processes. > > > One controlling process (running as root) would monitor these > > sage processes and restart (and kill) them as required. > > > So sageuser5 would be able to kill sageprocess5 but nothing > > else. Moreover sageprocess5 would be restarted immediately. > > Everything is fully isolated. No security risk whatsoever. > > > One would need a system with a lot of memory of course. > > That's an interesting alternative model that I've thought > some about. Instead of improving the server we just spawn > a bunch of separate servers on separate ports. This is > precisely what I did one year ago after I wrote the first > version of the notebook and had 30 high school kids try > *one* notebook server all at once -- crash. So I made > one sage notebook server for each student and this worked > fine. I'll have the next group of 30 high school students > June 26-July 7, and this year I hope to serve them all > with one server. > > William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@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-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
