[mpich-discuss] mpich hanging on startup

[Balaji, Pavan]

No, you can use nemesis on all platforms.

  -- Pavan

> On Jan 20, 2016, at 8:25 PM, Orion Poplawski <orion at cora.nwra.com> wrote:
> 
> On 01/20/2016 05:05 PM, Orion Poplawski wrote:
>> I'm got a strange situation - I'm trying to build hdf5 1.8.16 for Fedora.  The
>> Fedora builders do not have network access (/etc/resolv.conf set to
>> "nameserver 127.0.0.1" and no local nameserver) for security purposes.  The
>> hdf5 t_mpi parallel test hangs on launch with mpich 3.2, but only on the arm
>> builders.
>> 
>> The processes seem to deadlock in the MPI code, each blocking in poll(),
>> presumably waiting for communication from the other process.
> 
> 
> Apparently the Fedora package builds using --with-device=ch3:nemesis on x86 and --with-device=ch3:sock on all other platforms, so the arm builds are using a different channel.  Is that still a necessary and/or recommended configuration?
> 
> 
> -- 
> Orion Poplawski
> Technical Manager                     303-415-9701 x222
> NWRA/CoRA Division                    FAX: 303-415-9702
> 3380 Mitchell Lane                  orion at cora.nwra.com
> Boulder, CO 80301              http://www.cora.nwra.com
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