Assaf Gordon wrote, On 04/08/2011 10:07 AM:
Processes:
The servers processes that you should plan for are: 1 galaxy process for job-runner 2 or 3 galaxy processes for web-fronts 1 process of postgres 1 process of apache optionally 1 process of galaxy-reports you'll also want to leave some free CPUs for SSH access, CRON jobs and other peripherals. Postgres & apache are multithreaded, but it usually balances out with light load on the web/DB front from galaxy (even with 30 users). So all in all, I'd recommend reserving 5 to 8 CPU cores to just galaxy and daemons (reserving means: never using those cores for galaxy jobs). You can do with less cores, but then response times might suffer (and it's annoying when you click "show saved histories" and the page takes 20 seconds to load...).
Forgot to mention SGE/PBS: you definitely want to use them (even if you're using a single machine), because the local job runner doesn't take into account multi-threaded programs when scheduling jobs. So another core is needed for the SGE scheduler daemons (sge_qmaster and sge_execd).