Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Christian Kauhaus
Bogdan Costescu : >I beg to disagree. In a setup like the one mentioned, after orted is >started via an IPv4-only rsh/ssh, OpenMPI applications could use IPv6 >without problems, just like they could use f.e. GM if Myrinet cards >would be present. I see this very much like your past experience wi

Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Ralf Wildenhues
* Bogdan Costescu wrote on Mon, Apr 03, 2006 at 05:34:56PM CEST: > > IMHO code can simply be shared and only the really different part > should be made independent. This is more a question of whether the > build system would allow such a scheme and of the runtime behaviour > (for static linking

Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Bogdan Costescu
On Mon, 3 Apr 2006, Christian Kauhaus wrote: This would result in an enormous amount of duplicated code, since the IPv4->IPv6 transition would only affect a small fraction of the total tcp BTL codebase. This is clearly a violation of the DRY principle (don't repeat yourself). IMHO code can s

Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Ralph Castain
I think that would be okay - certainly  makes a good starting point! If it becomes an issue later, we can revisit at that time. Thanks Ralph Christian Kauhaus wrote: Ralph Castain : Actually, we have some sensor network folks that are interested in using OpenRTE for their ap

Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Christian Kauhaus
Ralph Castain : > Actually, we have some sensor network folks that are interested in > using OpenRTE for their applications. Their platforms can be small > microprocessors, many with custom mini-operating systems. Almost > none support IPv6 nor have any knowledge of that protocol. I see. D

Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Christian Kauhaus
Bogdan Costescu : >What you propose here should work for the case of a single BTL that >handles both IPv4 and IPv6. How about the case of 2 BTLs ? (as it's >not clear to me from the rest of the discussion if one solution is >better than the other) The introduction of a new 'tcp6' BTL was mentio

Re: [OMPI devel] IPv6 support in OpenMPI?

2006-04-03 Thread Bogdan Costescu
On Fri, 31 Mar 2006, Christian Kauhaus wrote: So the resolver already does the complicated work for us, since it returns all addresses associated to a given target (hostname or IP-addr notation) in the order of decreasing preference. What you propose here should work for the case of a single