Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Paul H. Hargrove
That's probably a reflection of the status of the "Open MPI User Documentation" sub-project :-) On 2/10/2012 5:12 PM, Jeff Squyres wrote: FWIW: google analytics indicates that the FAQ and the mailing list archives are among the most heavily used sections of the web site. :-) -- Paul H.

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres
FWIW: google analytics indicates that the FAQ and the mailing list archives are among the most heavily used sections of the web site. :-) On Feb 10, 2012, at 8:09 PM, Paul H. Hargrove wrote: > Much better - at least to the extent that users actually read FAQs :-) > -Paul > > On 2/10/2012 5:01

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Paul H. Hargrove
Much better - at least to the extent that users actually read FAQs :-) -Paul On 2/10/2012 5:01 PM, Jeff Squyres (jsquyres) wrote: Check out #220 now; I updated it. -- Paul H. Hargrove phhargr...@lbl.gov Future Technologies Group HPC Research Department

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres (jsquyres)
Check out #220 now; I updated it. Sent from my phone. No type good. On Feb 10, 2012, at 4:46 PM, "Jeff Squyres" wrote: > On Feb 10, 2012, at 3:32 PM, Paul H. Hargrove wrote: > >> The point of the question isn't related to WHY eth8 is useless - just assume >> it is. >>

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres
On Feb 10, 2012, at 3:32 PM, Paul H. Hargrove wrote: > The point of the question isn't related to WHY eth8 is useless - just assume > it is. > Assume it is UP, but useless for whatever reasons motivated writing FAQ #220. > It could be Terry's example of a port connected to the service processor.

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Paul H. Hargrove
On 2/10/2012 12:21 PM, Jeff Squyres wrote: On Feb 10, 2012, at 3:14 PM, Paul H. Hargrove wrote: + User knows nothing about xen, and thus nothing about virbr0 + User has a local-only interface (eth8 in my made up example) + User reads FAQ entry "220. How do I tell Open MPI which TCP networks

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres
On Feb 10, 2012, at 3:14 PM, Paul H. Hargrove wrote: > + User knows nothing about xen, and thus nothing about virbr0 > + User has a local-only interface (eth8 in my made up example) > + User reads FAQ entry "220. How do I tell Open MPI which TCP networks to > use?" > + User follows instructions

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Paul H. Hargrove
On 2/10/2012 12:03 PM, Jeff Squyres wrote: On Feb 10, 2012, at 1:44 PM, Paul H. Hargrove wrote: Since the situation described is one where the user didn't know they could/should disable xen, it is reasonable to think they ALSO don't know they need to exclude virbr0. That's what I'm

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres
On Feb 10, 2012, at 1:44 PM, Paul H. Hargrove wrote: > Since the situation described is one where the user didn't know they > could/should disable xen, it is reasonable to think they ALSO don't know they > need to exclude virbr0. That's what I'm thinking. > So, I read the question as

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Paul H. Hargrove
On 2/10/2012 10:38 AM, Jeff Squyres wrote: On Feb 10, 2012, at 1:00 PM, TERRY DONTJE wrote: >> Should we add "virbr0" to the default value for [btl|oob]_tcp_if_exclude? >> > What happens to that value if you then set btl_tcp_if_exclude to some value on the mpirun command line? It

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres
On Feb 10, 2012, at 1:00 PM, TERRY DONTJE wrote: >> Should we add "virbr0" to the default value for [btl|oob]_tcp_if_exclude? >> > What happens to that value if you then set btl_tcp_if_exclude to some value > on the mpirun command line? It works just fine. I.e., if you mpirun --mca

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread TERRY DONTJE
On 2/10/2012 11:50 AM, Jeff Squyres wrote: This is an open question to OMPI developers... It looks like RHEL (and maybe others?) adds the "virbr0" IP interface when Xen is activated. This IP interface is only used to communicate with the local Xen instance(s); it is not used to communicate

Re: [OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Ralph Castain
On Feb 10, 2012, at 9:50 AM, Jeff Squyres wrote: > This is an open question to OMPI developers... > > It looks like RHEL (and maybe others?) adds the "virbr0" IP interface when > Xen is activated. This IP interface is only used to communicate with the > local Xen instance(s); it is not used

[OMPI devel] RFC: Add "virbr0" to [btl|oob]_tcp_if_exclude?

2012-02-10 Thread Jeff Squyres
This is an open question to OMPI developers... It looks like RHEL (and maybe others?) adds the "virbr0" IP interface when Xen is activated. This IP interface is only used to communicate with the local Xen instance(s); it is not used to communicate over the real network. In a case that I