[mpich-discuss] mpich startup without networking

[Balaji, Pavan]

Hmm.  We could do that.  Alternatively, we could cover for the case that we are not able to resolve the IP address for the local hostname, i.e., "localhost", for systems where this is not added in /etc/hosts.  Let me see if I can work up a patch.  Give me a few minutes.

  -- Pavan

> On Jan 21, 2016, at 3:20 PM, Orion Poplawski <orion at cora.nwra.com> wrote:
> 
> More Fedora builder issues.  I was able to get farther by using the nemesis
> channel on all platforms.  Now I'm running into:
> 
> Testing MPI parallel I/O without netCDF...
> Fatal error in MPI_Init: Other MPI error, error stack:
> MPIR_Init_thread(474)..............:
> MPID_Init(190).....................: channel initialization failed
> MPIDI_CH3_Init(89).................:
> MPID_nem_init(320).................:
> MPID_nem_tcp_init(173).............:
> MPID_nem_tcp_get_business_card(420):
> MPID_nem_tcp_init(379).............: gethostbyname failed,
> buildvm-12.phx2.fedoraproject.org (errno 2)
> 
> Okay, so lets try -host localhost:
> 
> Testing MPI parallel I/O without netCDF...
> [mpiexec at buildhw-05.phx2.fedoraproject.org] HYDU_sock_is_local
> (utils/sock/sock.c:532): gethostbyname error on
> buildhw-05.phx2.fedoraproject.org: Host name lookup failure
> [mpiexec at buildhw-05.phx2.fedoraproject.org] main (ui/mpich/mpiexec.c:291):
> unable to check if localhost is local
> 
> Perhaps we can encode that "localhost" is always local?
> 
> 
> 
> -- 
> Orion Poplawski
> Technical Manager                     303-415-9701 x222
> NWRA, Boulder/CoRA Office             FAX: 303-415-9702
> 3380 Mitchell Lane                       orion at nwra.com
> Boulder, CO 80301                   http://www.nwra.com
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