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test_allreduce_grad_gpu fails #96

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levelfour opened this issue Jun 19, 2017 · 1 comment
Closed

test_allreduce_grad_gpu fails #96

levelfour opened this issue Jun 19, 2017 · 1 comment

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@levelfour
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It can be checked by the following test:

mpiexec -n 2 nosetests -v tests/test_communicator.py

This test sequence would stop at test_allreduct_grad_gpu. It seems NcclCommunicator has failed to initialize itself.

Environment

MPI: OpenMPI-2.1.0 (do not reproduce on MVAPICH2-2.2)
@iwiwi
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iwiwi commented Aug 31, 2017

It does not reproduce at the current master. Reopen this if it still happens at your environment. Thanks!

@iwiwi iwiwi closed this as completed Aug 31, 2017
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@iwiwi @levelfour