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[openmpi]: Fix wait_mpi_ready() hangs when using OpenMPI 2.1.3 #773

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May 9, 2018
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[openmpi]: Fix wait_mpi_ready() hangs when using OpenMPI 2.1.3 #773

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3 changes: 2 additions & 1 deletion kubeflow/openmpi/assets/init.sh
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
set -exv

OPENMPI_DIR=/kubeflow/openmpi
MPIEXEC_TIMEOUT_ON_WAIT_MPI_READY=10
BACKOFF_SECS=10
TIMEOUT_EXIT_CODE=124

Expand All @@ -9,7 +10,7 @@ wait_mpi_ready() {
local max_retries=$2
local retries=0

until mpiexec -n ${workers} --hostfile ${OPENMPI_DIR}/assets/hostfile --allow-run-as-root -q sh -c 'echo $(hostname) is ready'; do
until MPIEXEC_TIMEOUT=${MPIEXEC_TIMEOUT_ON_WAIT_MPI_READY} mpiexec -n ${workers} --hostfile ${OPENMPI_DIR}/assets/hostfile --allow-run-as-root -q sh -c 'echo $(hostname) is ready'; do
sleep ${BACKOFF_SECS}

retries=$(expr ${retries} + 1)
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