I forgot to mention we use server_pool (there is one master-server and the ssh connections go to accounts in both the master-server and the secondary-server). All the users have unlimited ulimit, we put the ulimit as an option for the notebook. For one notebook we put limits on the users, the problem is that if they reach the limit, their process are stopped but no one can access anymore the notebook. This is what happens also if will kill manually the big processes in the notebooks where the users have no limits.
Any help will be welcome. If we put no limits we may loose any access to the computer and the only option is turn off and on; if we put, we do not loose access, but the notebook is stopped too soon. Enrique. El sábado, 26 de noviembre de 2016, 2:49:09 (UTC+1), Nils Bruin escribió: > > On Friday, November 25, 2016 at 2:24:49 PM UTC-8, Enrique Artal wrote: >> >> In my University, most math labs are done using Sagemath; for this >> purpose we have two PC's with sagenb service to which students access >> remotely. In general, it works smoothly; three classrooms with 20 students >> each, and people working at home simultaneously does not saturate the >> servers. Sometimes, students program some infinite loops or try heavy >> computations. The notebook is launched with ulimits but they do not seem to >> work, and 30GB process (resident memory) arise, and they usually hang the >> notebook; killing the process is not enough, one must restart the notebook. >> > > Unless > > https://trac.sagemath.org/ticket/9398 > > has reared its head again, ulimits should be respected. However, you > probably run the notebook setup in a "server pool" setup. You need to > configure those accounts to set the ulimit in order to limit the memory use > of the computer processes. > > -- 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.
