[AG-TECH] ag2.2: pig vs. node proper
Ivan R. Judson
judson at mcs.anl.gov
Wed Jun 16 10:28:48 CDT 2004
Hi Joshua,
In a very broad sense you're right. The details are like this:
- each machine that is part of a node has a Service Manager (this starts and
stops individual services, e.g. VideoService)
- each node (group of one or more machines) has a Node Service, this
provides a single point of communication for the entire node.
- The venue client is the user software, and when run with --personalNode,
it starts a Node Service and Service Manager locally.
Is that enough detail or are you looking for more?
--Ivan
> -----Original Message-----
> From: owner-ag-tech at mcs.anl.gov
> [mailto:owner-ag-tech at mcs.anl.gov] On Behalf Of Joshua M. Brown
> Sent: Wednesday, June 16, 2004 9:39 AM
> To: Osland, CD (Chris)
> Cc: ag-tech
> Subject: RE: [AG-TECH] ag2.2: pig vs. node proper
>
> While i most certainly do appreciate the answer, it was not
> quite what i was after. i am aware that AG can be spread
> across multiple machines (and that physical machine
> configurations don't matter so much as long as all AG
> software components are running somewhere and can find each other).
>
> What i am after is a system level break-out of the software
> components:
> which python script is doing what, specifically in the
> multi-machine configurations.
>
> Thank you.
>
> Joshua M. Brown
> CSCE Senior
> University of Arkansas
> Desktop Unix Support Team
> Computing Services, UofA
>
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>
> On Wed, 16 Jun 2004, Osland, CD (Chris) wrote:
>
> > I'm replying to this before reading all subsequent mail,
> but can't see
> > any replies if the Subject: lines are consistent.
> >
> > To the very best of my knowledge, the 'room node' scenario does not
> > mandate how many computers you use - different people have used
> > 4 (the fourth being the control one for the echo
> canceller), 3 (as you
> > noted), 2 (possibly display in one, everything else in the
> > other) and 1 (all in the one box). We have room nodes in both 3
> > computer and 1 computer systems.
> >
> > Cheers
> >
> > Chris
> >
> > ____________________________________________________________________
> > Chris Osland
> Office tel: +44
> > (0) 1235 446565
> > Digital Media and Access Grid
> Medialab tel: +44 (0)
> > 1235 446459
> > BIT Department Access
> Grid room tel: +44
> > (0) 1235 445666
> > e-mail: C.D.Osland at rl.ac.uk
> Fax: +44
> > (0) 1235 445597
> > CLRC Rutherford Appleton Laboratory (Bldg. R18) Chilton,
> DIDCOT, Oxon
> > OX11 0QX, UK [The contents of this email are confidential
> and are for
> > the use of the intended recipient only.
> > If you are not the intended recipient do not take any
> action on it or
> > show it to anyone else, but return this email to the sender
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> >
> >
> >
> >
> >
> > > -----Original Message-----
> > > From: owner-ag-tech at mcs.anl.gov
> [mailto:owner-ag-tech at mcs.anl.gov]On
> > > Behalf Of Joshua M. Brown
> > > Sent: 15 June 2004 15:40
> > > To: ag-tech
> > > Subject: [AG-TECH] ag2.2: pig vs. node proper
> > >
> > >
> > > Okay folks,
> > >
> > > i'm just wanting to solidify some things in my head real
> quick. With
> > > AG 2.2, if you start the VenueClient.py with the
> --personalNode and
> > > -d flags, you get, well a PIG (complete with its own
> video services
> > > (consumer/producer) and its own audio services)) correct? Ah, the
> > > services running after being setup, of course.
> > >
> > > Okay, now on a node proper (room node, i've heard. We're
> running an
> > > old ag1.x room node now), you would have the
> AudioService.py running
> > > on one machine, VideoService.py running on another (both linux of
> > > whatever flavor you're inclined to use) and the final piece,
> > > VenueClient.py on the "display machine". Is this a correct
> > > over-simplification?
> > > Again, i'm just
> > > making sure i get a solid mental picture of system layout
> wrt to the
> > > scripts.
> > >
> > > i am aware of the network and port issues that are
> related with both
> > > types of node; just clarifying the diffs.
> > >
> > > Have i gotten things correctly? Please let me know if this is not
> > > the case, we'll be upgrading soon.
> > >
> > > Thanks folks! :)
> > >
> > > Joshua M. Brown
> > > CSCE Senior
> > > University of Arkansas
> > > Desktop Unix Support Team
> > > Computing Services, UofA
> > >
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