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Disable RDMA if no SMSC support is available. #9292

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Merged
merged 1 commit into from
Aug 19, 2021
Merged

Disable RDMA if no SMSC support is available. #9292

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9 changes: 5 additions & 4 deletions opal/mca/btl/sm/btl_sm_module.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
* Copyright (c) 2004-2011 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2009 The University of Tennessee and The University
* Copyright (c) 2004-2021 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2007 High Performance Computing Center Stuttgart,
Expand Down Expand Up @@ -176,15 +176,16 @@ static int init_sm_endpoint(struct mca_btl_base_endpoint_t **ep_out, struct opal
}

/* attach to the remote segment */

ep->smsc_endpoint = MCA_SMSC_CALL(get_endpoint, proc);
ep->smsc_endpoint = NULL; /* assume no one sided support */
if( NULL != mca_smsc ) {
ep->smsc_endpoint = MCA_SMSC_CALL(get_endpoint, proc);
}
if (NULL == ep->smsc_endpoint) {
/* disable RDMA */
mca_btl_sm.super.btl_get = NULL;
mca_btl_sm.super.btl_put = NULL;
mca_btl_sm.super.btl_flags &= ~MCA_BTL_FLAGS_RDMA;
}

if (mca_smsc_base_has_feature(MCA_SMSC_FEATURE_CAN_MAP)) {
ep->smsc_map_context = MCA_SMSC_CALL(map_peer_region, ep->smsc_endpoint, /*flag=*/0,
(void *) (uintptr_t) modex->segment_base,
Expand Down