[Swift-devel] Try coaster on BG/P ?

[Mihael Hategan]

On Thu, 2008-06-19 at 15:07 -0500, Michael Wilde wrote:
> 
> On 6/19/08 2:52 PM, Mihael Hategan wrote:
> > On Thu, 2008-06-19 at 14:47 -0500, Michael Wilde wrote:
> >> I *think* that both the login nodes and the compute nodes can reach the 
> >> ION (and vice versa) on direct networks without NAT, hopefully allowing 
> >> Coaster UDP communication to work.
> > 
> > I thought we agreed that UDP is not worth the trouble.
> 
> If so, I either forgot or missed that in the email thread. But thats OK 
> - I have no preference until the choice of protocol proves to be an 
> issue for scalability or reliability. Have you switched the 
> implementation to TCP?

Yes. A long time ago.

> 
> > 
> >> Coaster is not  a high priority for this, but in the next few weeks I 
> >> hope to start running the apps above under Swift.  If Coaster is ready 
> >> to try on the BGP at that point, I'm eager to test it there. Before that 
> >> I hope to test it first in an environment where it already works.
> >>
> >> Ben or Mihael, can you point me to (or write) a README on how to run 
> >> Coaster?
> > 
> > Do you want to run a standalone service?
> 
> Do you mean standalone as in "not started automatically by Swift via 
> GRAM"?

Yes.

>   If so, I think yes: on the BGP, one mode would be to run one or 
> more services from some Swift or related Coaster startup script, that 
> would launch the service(s) - either one, on the login host on which 
> you're running Swift, or on IO nodes, one per processor-set.

I don't think that's documented yet. I'll let you know when I have
something there.

> 
> > 
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> >