Hi Tim,


In our current implementation of Smart (Solver) Scheduler,  the constraints are 
defined as pluggable modules (just like filter definitions in the filter 
scheduler) and are pulled in together when necessary to solve the scheduling 
decision. And regarding the data that we get from different services in storage 
(cinder)  , network and so on, we are currently using their clients to directly 
get the data to use along with the constraints.



I believe a policy implementation can specify which constraints to use and 
which data. So the data can potentially be saved in the individual services.



The Gantt project is also planning to have internal DB which will be used for 
scheduling. That is another option where the unified data can be, when we want 
to do unified scheduling that we describe in our Smart scheduler project.



I will open to explore options as to where Congress will fit in here,  but 
currently I feel it is one layer above this.



Thanks,

Yathi.







Sent from my LG G2, an AT&T 4G LTE smartphone





------ Original message------

From: Tim Hinrichs

Date: Tue, Jun 10, 2014 8:27 AM

To: OpenStack Development Mailing List (not for usage questions);

Cc: Norival Figueira;Debo Dutta (dedutta);

Subject:Re: [openstack-dev] [NFV] - follow up on scheduling discussion



Hi all,

I see that many of the use cases require information from different OS 
components, e.g. networking, compute, and storage.  One thing to think about is 
where those constraints are written/stored and how the data the constraints 
depend on is pulled together.  The Congress project might be helpful here, and 
I’m happy to help explore options.  Let me know if you’re interested.

https://wiki.openstack.org/wiki/Congress

Tim



On Jun 4, 2014, at 11:25 AM, ramki Krishnan <[email protected]> wrote:

> All,
>
> Thanks for the interest in the NFV scheduling topic. Please find a proposal 
> on "Smart Scheduler (Solver Scheduler) enhancements for NFV: Use Cases, 
> Constraints etc.". 
> https://urldefense.proofpoint.com/v1/url?u=https://docs.google.com/document/d/1k60BQXOMkZS0SIxpFOppGgYp416uXcJVkAFep3Oeju8/edit%23heading%3Dh.wlbclagujw8c&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=%2FZ35AkRhp2kCW4Q3MPeE%2BxY2bqaf%2FKm29ZfiqAKXxeo%3D%0A&m=vTulCeloS8Hc59%2FeAOd32Ri4eqbNqVE%2FeMgNRzGZnz4%3D%0A&s=836991d6daab66b519de3b670db8af001144ddb20e636665b395597aa118538f
>
> Based on this proposal, we are planning to enhance the existing 
> solver-scheduler blueprint 
> https://urldefense.proofpoint.com/v1/url?u=https://blueprints.launchpad.net/nova/%2Bspec/solver-scheduler&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=%2FZ35AkRhp2kCW4Q3MPeE%2BxY2bqaf%2FKm29ZfiqAKXxeo%3D%0A&m=vTulCeloS8Hc59%2FeAOd32Ri4eqbNqVE%2FeMgNRzGZnz4%3D%0A&s=d1883d82f8d09081b35986987b5f2f9f1d7731f16b2a5251fdbf26c1b26b294d.
>
> Would love to hear your comments and thoughts. Would be glad to arrange a 
> conference call if needed.
>
> Thanks,
> Ramki
>
>
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