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v4.1.x: refactor UCC collective operations to handle MPI_IN_PLACE correctly #13229

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Merged
merged 1 commit into from
May 5, 2025
Merged

v4.1.x: refactor UCC collective operations to handle MPI_IN_PLACE correctly #13229

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13 changes: 9 additions & 4 deletions ompi/mca/coll/ucc/coll_ucc_allgather.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,15 +15,20 @@ static inline ucc_status_t mca_coll_ucc_allgather_init(const void *sbuf, size_t
ucc_coll_req_h *req,
mca_coll_ucc_req_t *coll_req)
{
ucc_datatype_t ucc_sdt, ucc_rdt;
ucc_datatype_t ucc_sdt = UCC_DT_INT8, ucc_rdt = UCC_DT_INT8;
bool is_inplace = (MPI_IN_PLACE == sbuf);
int comm_size = ompi_comm_size(ucc_module->comm);

if (!ompi_datatype_is_contiguous_memory_layout(sdtype, scount) ||
if (!(is_inplace || ompi_datatype_is_contiguous_memory_layout(sdtype, scount)) ||
!ompi_datatype_is_contiguous_memory_layout(rdtype, rcount * comm_size)) {
goto fallback;
}
ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);

ucc_rdt = ompi_dtype_to_ucc_dtype(rdtype);
if (!is_inplace) {
ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);
}

if (COLL_UCC_DT_UNSUPPORTED == ucc_sdt ||
COLL_UCC_DT_UNSUPPORTED == ucc_rdt) {
UCC_VERBOSE(5, "ompi_datatype is not supported: dtype = %s",
Expand All @@ -49,7 +54,7 @@ static inline ucc_status_t mca_coll_ucc_allgather_init(const void *sbuf, size_t
}
};

if (MPI_IN_PLACE == sbuf) {
if (is_inplace) {
coll.mask = UCC_COLL_ARGS_FIELD_FLAGS;
coll.flags = UCC_COLL_ARGS_FLAG_IN_PLACE;
}
Expand Down
10 changes: 7 additions & 3 deletions ompi/mca/coll/ucc/coll_ucc_allgatherv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,14 @@ static inline ucc_status_t mca_coll_ucc_allgatherv_init(const void *sbuf, size_t
ucc_coll_req_h *req,
mca_coll_ucc_req_t *coll_req)
{
ucc_datatype_t ucc_sdt, ucc_rdt;
ucc_datatype_t ucc_sdt = UCC_DT_INT8, ucc_rdt = UCC_DT_INT8;
bool is_inplace = (MPI_IN_PLACE == sbuf);

ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);
ucc_rdt = ompi_dtype_to_ucc_dtype(rdtype);
if (!is_inplace) {
ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);
}

if (COLL_UCC_DT_UNSUPPORTED == ucc_sdt ||
COLL_UCC_DT_UNSUPPORTED == ucc_rdt) {
UCC_VERBOSE(5, "ompi_datatype is not supported: dtype = %s",
Expand All @@ -47,7 +51,7 @@ static inline ucc_status_t mca_coll_ucc_allgatherv_init(const void *sbuf, size_t
}
};

if (MPI_IN_PLACE == sbuf) {
if (is_inplace) {
coll.mask = UCC_COLL_ARGS_FIELD_FLAGS;
coll.flags = UCC_COLL_ARGS_FLAG_IN_PLACE;
}
Expand Down
13 changes: 9 additions & 4 deletions ompi/mca/coll/ucc/coll_ucc_alltoall.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,15 +15,20 @@ static inline ucc_status_t mca_coll_ucc_alltoall_init(const void *sbuf, size_t s
ucc_coll_req_h *req,
mca_coll_ucc_req_t *coll_req)
{
ucc_datatype_t ucc_sdt, ucc_rdt;
ucc_datatype_t ucc_sdt = UCC_DT_INT8, ucc_rdt = UCC_DT_INT8;
bool is_inplace = (MPI_IN_PLACE == sbuf);
int comm_size = ompi_comm_size(ucc_module->comm);

if (!ompi_datatype_is_contiguous_memory_layout(sdtype, scount * comm_size) ||
if (!(is_inplace || ompi_datatype_is_contiguous_memory_layout(sdtype, scount * comm_size)) ||
!ompi_datatype_is_contiguous_memory_layout(rdtype, rcount * comm_size)) {
goto fallback;
}
ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);

ucc_rdt = ompi_dtype_to_ucc_dtype(rdtype);
if (!is_inplace) {
ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);
}

if (COLL_UCC_DT_UNSUPPORTED == ucc_sdt ||
COLL_UCC_DT_UNSUPPORTED == ucc_rdt) {
UCC_VERBOSE(5, "ompi_datatype is not supported: dtype = %s",
Expand All @@ -49,7 +54,7 @@ static inline ucc_status_t mca_coll_ucc_alltoall_init(const void *sbuf, size_t s
}
};

if (MPI_IN_PLACE == sbuf) {
if (is_inplace) {
coll.mask = UCC_COLL_ARGS_FIELD_FLAGS;
coll.flags = UCC_COLL_ARGS_FLAG_IN_PLACE;
}
Expand Down
10 changes: 7 additions & 3 deletions ompi/mca/coll/ucc/coll_ucc_alltoallv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,14 @@ static inline ucc_status_t mca_coll_ucc_alltoallv_init(const void *sbuf, const i
ucc_coll_req_h *req,
mca_coll_ucc_req_t *coll_req)
{
ucc_datatype_t ucc_sdt, ucc_rdt;
ucc_datatype_t ucc_sdt = UCC_DT_INT8, ucc_rdt = UCC_DT_INT8;
bool is_inplace = (MPI_IN_PLACE == sbuf);

ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);
ucc_rdt = ompi_dtype_to_ucc_dtype(rdtype);
if (!is_inplace) {
ucc_sdt = ompi_dtype_to_ucc_dtype(sdtype);
}

if (COLL_UCC_DT_UNSUPPORTED == ucc_sdt ||
COLL_UCC_DT_UNSUPPORTED == ucc_rdt) {
UCC_VERBOSE(5, "ompi_datatype is not supported: dtype = %s",
Expand Down Expand Up @@ -48,7 +52,7 @@ static inline ucc_status_t mca_coll_ucc_alltoallv_init(const void *sbuf, const i
}
};

if (MPI_IN_PLACE == sbuf) {
if (is_inplace) {
coll.mask = UCC_COLL_ARGS_FIELD_FLAGS;
coll.flags = UCC_COLL_ARGS_FLAG_IN_PLACE;
}
Expand Down