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[v5.0.x] btl/smcuda: Add atomic_wmb() before sm_fifo_write #12343

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Merged
merged 1 commit into from
Feb 19, 2024
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[v5.0.x] btl/smcuda: Add atomic_wmb() before sm_fifo_write #12343

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2 changes: 2 additions & 0 deletions opal/mca/btl/smcuda/btl_smcuda_fifo.h
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,8 @@ static void add_pending(struct mca_btl_base_endpoint_t *ep, void *data, bool res
#define MCA_BTL_SMCUDA_FIFO_WRITE(endpoint_peer, my_smp_rank, peer_smp_rank, hdr, resend, \
retry_pending_sends, rc) \
do { \
/* memory barrier: ensure writes to the hdr have completed */ \
opal_atomic_wmb(); \
sm_fifo_t *fifo = &(mca_btl_smcuda_component.fifo[peer_smp_rank][FIFO_MAP(my_smp_rank)]); \
\
if (retry_pending_sends) { \
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