[Swift-devel] Re: Proposal for coaster service options

[Michael Wilde]

----- Forwarded Message -----
From: "Justin M Wozniak" <wozniak at mcs.anl.gov>
To: "Michael Wilde" <wilde at mcs.anl.gov>
Sent: Friday, March 18, 2011 9:51:13 AM
Subject: Re: WHere are manual coaster startup scripts?


They're in:

https://svn.ci.uchicago.edu/svn/vdl2/usertools/persistent-coasters


----- Original Message -----
> ----- Original Message -----
> > On Thu, 2011-03-17 at 23:43 -0500, Michael Wilde wrote:
> > > > > One other item that came up in yesterday's meeting was the set
> > > > > of
> > > > > command line features to add to coaster-service (and to swift
> > > > > itself
> > > > > which we didnt mention) to put the integrated coaster service
> > > > > into
> > > > > passive mode and to make it save port numbers in a file for
> > > > > integration with scripts.
> > > > >
> > > > > That might be a good task to do soon if its easy/feasible.
> > > >
> > > > Yes. Seems like a quick and useful thing to have. Though doesn't
> > > > the
> > > > sites.xml scheme work in this case?
> > >
> > > By "this case" do you mean the case where the coaster service is
> > > running in the Swift JVM? I.e. from jobmanager=local:something in
> > > the
> > > coaster pool entry?
> >
> > I think I'm misunderstanding the issue.
> >
> > Are you referring to having the standalone service configured for
> > passive mode?
> 
> Yes. The original mail I sent, proposing new command line options, was
> referring entirely to the coaster-service command.
> 
> In a later email, I realized that some of those issues might apply to
> the coaster service when running within the swift command's jvm as
> well.
> 
> - it seems that some or all of port management options (for setting
> and reporting port numbers) may apply to swift as well
> 
> - its likely that the option to set passive *does not* apply, as it
> already works. I think I was confused on the various combinations when
> I brought that up. Since currently we get the standalone service to
> enter passive mode by running a swift script that has passive mode set
> in the sites entry for that service, I realized on reflection that
> setting the passive option when the coaster service is running with
> the swift command JVM *must* be working correctly. It would be good to
> verify and create tests for this, but that is my current assumption.
> 
> Related to all this: I think that to do this job fully, we need to
> complete the set of wrapper commands that make manually run coasters
> an end-user-ready feature. And then to create scripts in the test
> framework to verify that they work. That will take more discussion,
> specification work, and devel time. But I feel we need to now get this
> feature completed and working, as there is user need for it.
> 
> Mihael, if you can get the changes into coaster-service and the swift
> command, I think others can get the wrapper scripts done and tested.
> 
> There is I think a prototype for this command support somewhere
> (Justin, you reminded me of these a few days ago: can you point out
> where they are?)
> 
> - Mike

-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory