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fix osc rdma origin/target extent mixup -- Fixes 3569 #3570

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fix osc rdma origin/target extent mixup -- Fixes 3569 #3570

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6 changes: 4 additions & 2 deletions ompi/mca/osc/rdma/osc_rdma_accumulate.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
* Copyright (c) 2016-2017 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2016 Intel, Inc. All rights reserved.
* Copyright (c) 2017 IBM Corporation. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
Expand Down Expand Up @@ -1015,7 +1016,7 @@ int ompi_osc_rdma_rget_accumulate_internal (ompi_osc_rdma_sync_t *sync, const vo
ompi_osc_rdma_module_t *module = sync->module;
mca_btl_base_registration_handle_t *target_handle;
uint64_t target_address;
ptrdiff_t lb, extent;
ptrdiff_t lb, extent, target_extent;
int ret;

/* short-circuit case. note that origin_count may be 0 if op is MPI_NO_OP */
Expand All @@ -1027,9 +1028,10 @@ int ompi_osc_rdma_rget_accumulate_internal (ompi_osc_rdma_sync_t *sync, const vo
return OMPI_SUCCESS;
}

(void) ompi_datatype_get_extent (target_datatype, &lb, &target_extent);
(void) ompi_datatype_get_extent (origin_datatype, &lb, &extent);

ret = osc_rdma_get_remote_segment (module, peer, target_disp, extent * target_count, &target_address, &target_handle);
ret = osc_rdma_get_remote_segment (module, peer, target_disp, target_extent * target_count, &target_address, &target_handle);
if (OPAL_UNLIKELY(OMPI_SUCCESS != ret)) {
return ret;
}
Expand Down