So that means all the communications between different machines are from database management system, and has little thing to do with the scheduler? Sorry, I am new to this field and the question may be stupid.
And I see Celery has features to support distributed computing (http://stackoverflow.com/questions/23916413/celery-parallel-distributed-task-with-multiprocessing), Are those features also included in Scheduler? Thanks! On Wednesday, October 1, 2014 3:16:57 AM UTC-4, Niphlod wrote: > > On Tuesday, September 30, 2014 3:42:41 PM UTC+2, Pengfei Yu wrote: > >> Hi Simone, >> >> Thanks for your reply. I used the solution from the web2py document site: >> http://www.web2py.com/books/default/chapter/29/13/deployment-recipes, in >> section "Start the scheduler as a Linux service (upstart)". After I started >> it, the status check (sudo status web2py-scheduler) shows that it is >> already started: >> ubuntu@ip-172-31-41-2:~$ sudo status web2py-scheduler >> web2py-scheduler start/running, process 16262 >> >> >> Interesting thing is that when I restart web2py-scheduler again, it works >> out. The previous worker didn't show up in the db_scheduler_worker table >> but the current one shows up. >> >> > well, solutions are "ready to use" but to check nonetheless ^_^' > > >> May I have another question? We are planning to use the power of >> distributed system cluster with multiple EC2 instances for this project. >> May I ask if the tasks in the scheduler just use different thread in a CPU >> or it can also be designed to use different cores or nodes with multiple >> processors? (From this post: >> https://groups.google.com/forum/#!topic/web2py/WlhvelFu8-Q, it seems the >> scheduler can be adapted for multiple cores). And if that is the case, is >> there any special design on web2py scheduler itself for the communication >> between master instance and others? >> >> > each scheduler instance is a process. there's no piece of code in earth > (in any programming language) that'll make a program go on a specific > processor: that's something only the underlying operating system manages. > The only communication needed is the connection to the db. > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
