There is an unexpected line break in the middle of the link, so I post it again:
https://docs.google.com/document/d/1RfP7jRsw1mXMjd7in72ARjK0fTrsQv1bqolOri IQB2Y > -----Message d'origine----- > De : Khanh-Toan Tran [mailto:khanh-toan.t...@cloudwatt.com] > Envoyé : mercredi 29 janvier 2014 13:25 > À : 'OpenStack Development Mailing List (not for usage questions)' > Objet : [openstack-dev] [Nova][Scheduler] Policy Based Scheduler and Solver > Scheduler > > Dear all, > > As promised in the Scheduler/Gantt meeting, here is our analysis on the > connection between Policy Based Scheduler and Solver Scheduler: > > https://docs.google.com/document/d/1RfP7jRsw1mXMjd7in72ARjK0fTrsQv1bq > olOri > IQB2Y > > This document briefs the mechanism of the two schedulers and the possibility of > cooperation. It is my personal point of view only. > > In a nutshell, Policy Based Scheduler allows admin to define policies for different > physical resources (an aggregate, an availability-zone, or all > infrastructure) or different (classes of) users. Admin can modify > (add/remove/modify) any policy in runtime, and the modification effect is only > in the target (e.g. the aggregate, the users) that the policy is defined to. Solver > Scheduler solves the placement of groups of instances simultaneously by putting > all the known information into a integer linear system and uses Integer Program > solver to solve the latter. Thus relation between VMs and between VMs- > computes are all accounted for. > > If working together, Policy Based Scheduler can supply the filters and weighers > following the policies rules defined for different computes. > These filters and weighers can be converted into constraints & cost function for > Solver Scheduler to solve. More detailed will be found in the doc. > > I look forward for comments and hope that we can work it out. > > Best regards, > > Khanh-Toan TRAN > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
