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/* * Copyright (C) Mellanox Technologies Ltd. 2001-2011. ALL RIGHTS RESERVED.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mca/pml/pml.h"
#include "opal/datatype/opal_convertor.h"
#include "opal/util/show_help.h"
#include "mtl_mxm.h"
#include "mtl_mxm_types.h"
#include "mtl_mxm_request.h"
#include "ompi/mca/mtl/base/mtl_base_datatype.h"
static inline __opal_attribute_always_inline__
size_t ompi_mtl_mxm_stream_pack(opal_convertor_t *convertor, void *buffer,
size_t length, size_t offset)
{
struct iovec iov;
uint32_t iov_count = 1;
iov.iov_len = length;
iov.iov_base = buffer;
opal_convertor_set_position(convertor, &offset);
opal_convertor_pack(convertor, &iov, &iov_count, &length);
return length;
}
static size_t ompi_mtl_mxm_stream_isend(void *buffer, size_t length, size_t offset, void *context)
{
mca_mtl_mxm_request_t *mtl_mxm_request = (mca_mtl_mxm_request_t *) context;
opal_convertor_t *convertor = mtl_mxm_request->convertor;
return ompi_mtl_mxm_stream_pack(convertor, buffer, length, offset);
}
static size_t ompi_mtl_mxm_stream_send(void *buffer, size_t length, size_t offset, void *context)
{
opal_convertor_t *convertor = (opal_convertor_t *) context;
return ompi_mtl_mxm_stream_pack(convertor, buffer, length, offset);
}
static inline __opal_attribute_always_inline__ int
ompi_mtl_mxm_choose_send_datatype(mxm_send_req_t *mxm_send_req,
opal_convertor_t *convertor,
mxm_stream_cb_t stream_cb)
{
struct iovec iov;
uint32_t iov_count = 1;
size_t *buffer_len = &mxm_send_req->base.data.buffer.length;
#if !(OPAL_ENABLE_HETEROGENEOUS_SUPPORT)
if (convertor->pDesc &&
opal_datatype_is_contiguous_memory_layout(convertor->pDesc,
convertor->count)) {
mxm_send_req->base.data.buffer.ptr = convertor->pBaseBuf;
mxm_send_req->base.data.buffer.length = convertor->local_size;
mxm_send_req->base.data_type = MXM_REQ_DATA_BUFFER;
return OMPI_SUCCESS;
}
#endif
opal_convertor_get_packed_size(convertor, buffer_len);
if (0 == *buffer_len) {
mxm_send_req->base.data.buffer.ptr = NULL;
mxm_send_req->base.data_type = MXM_REQ_DATA_BUFFER;
return OMPI_SUCCESS;
}
if (opal_convertor_need_buffers(convertor)) {
mxm_send_req->base.data_type = MXM_REQ_DATA_STREAM;
mxm_send_req->base.data.stream.length = *buffer_len;
mxm_send_req->base.data.stream.cb = stream_cb;
return OMPI_SUCCESS;
}
mxm_send_req->base.data_type = MXM_REQ_DATA_BUFFER;
iov.iov_base = NULL;
iov.iov_len = *buffer_len;
opal_convertor_pack(convertor, &iov, &iov_count, buffer_len);
mxm_send_req->base.data.buffer.ptr = iov.iov_base;
return OMPI_SUCCESS;
}
static void ompi_mtl_mxm_send_completion_cb(void *context)
{
mca_mtl_mxm_request_t *mtl_mxm_request = context;
ompi_mtl_mxm_to_mpi_status(mtl_mxm_request->mxm.base.error,
&mtl_mxm_request->super.ompi_req->req_status);
mtl_mxm_request->super.completion_callback(&mtl_mxm_request->super);
}
static void ompi_mtl_mxm_send_progress_cb(void *user_data)
{
opal_progress();
}
int ompi_mtl_mxm_send(struct mca_mtl_base_module_t* mtl,
struct ompi_communicator_t* comm, int dest, int tag,
struct opal_convertor_t *convertor,
mca_pml_base_send_mode_t mode)
{
mxm_send_req_t mxm_send_req;
mxm_wait_t wait;
mxm_error_t err;
int ret;
/* prepare local send request */
mxm_send_req.base.state = MXM_REQ_NEW;
mxm_send_req.base.mq = ompi_mtl_mxm_mq_lookup(comm);
mxm_send_req.base.conn = ompi_mtl_mxm_conn_lookup(comm, dest);
mxm_send_req.base.context = convertor;
mxm_send_req.base.completed_cb = NULL;
ret = ompi_mtl_mxm_choose_send_datatype(&mxm_send_req, convertor,
ompi_mtl_mxm_stream_send);
if (OPAL_UNLIKELY(OMPI_SUCCESS != ret)) {
return ret;
}
mxm_send_req.base.data.buffer.memh = MXM_INVALID_MEM_HANDLE;
mxm_send_req.op.send.tag = tag;
mxm_send_req.op.send.imm_data = ompi_comm_rank(comm);
#if MXM_API < MXM_VERSION(2,0)
mxm_send_req.base.flags = MXM_REQ_FLAG_BLOCKING;
mxm_send_req.opcode = MXM_REQ_OP_SEND;
if (mode == MCA_PML_BASE_SEND_SYNCHRONOUS) {
mxm_send_req.base.flags |= MXM_REQ_FLAG_SEND_SYNC;
}
#else
mxm_send_req.flags = MXM_REQ_SEND_FLAG_BLOCKING;
if (mode == MCA_PML_BASE_SEND_SYNCHRONOUS) {
mxm_send_req.opcode = MXM_REQ_OP_SEND_SYNC;
} else {
mxm_send_req.opcode = MXM_REQ_OP_SEND;
}
#endif
/* post-send */
err = mxm_req_send(&mxm_send_req);
if (MXM_OK != err) {
opal_show_help("help-mtl-mxm.txt", "error posting send", true, 0, mxm_error_string(err));
return OMPI_ERROR;
}
/* wait for request completion */
wait.req = &mxm_send_req.base;
wait.state = MXM_REQ_COMPLETED;
wait.progress_cb = ompi_mtl_mxm_send_progress_cb;
wait.progress_arg = NULL;
mxm_wait(&wait);
return OMPI_SUCCESS;
}
int ompi_mtl_mxm_isend(struct mca_mtl_base_module_t* mtl,
struct ompi_communicator_t* comm, int dest, int tag,
struct opal_convertor_t *convertor,
mca_pml_base_send_mode_t mode, bool blocking,
mca_mtl_request_t * mtl_request)
{
mca_mtl_mxm_request_t *mtl_mxm_request = (mca_mtl_mxm_request_t *) mtl_request;
mxm_send_req_t *mxm_send_req;
mxm_error_t err;
int ret;
assert(mtl == &ompi_mtl_mxm.super);
mtl_mxm_request->convertor = convertor;
mxm_send_req = &mtl_mxm_request->mxm.send;
#if MXM_API >= MXM_VERSION(2,0)
mtl_mxm_request->is_send = 1;
#endif
/* prepare a send request embedded in the MTL request */
mxm_send_req->base.state = MXM_REQ_NEW;
mxm_send_req->base.mq = ompi_mtl_mxm_mq_lookup(comm);
mxm_send_req->base.conn = ompi_mtl_mxm_conn_lookup(comm, dest);
ret = ompi_mtl_mxm_choose_send_datatype(mxm_send_req, convertor,
ompi_mtl_mxm_stream_isend);
if (OPAL_UNLIKELY(OMPI_SUCCESS != ret)) {
return ret;
}
mtl_mxm_request->buf = mxm_send_req->base.data.buffer.ptr;
mtl_mxm_request->length = mxm_send_req->base.data.buffer.length;
mxm_send_req->base.data.buffer.memh = MXM_INVALID_MEM_HANDLE;
mxm_send_req->base.context = mtl_mxm_request;
mxm_send_req->base.completed_cb = ompi_mtl_mxm_send_completion_cb;
#if MXM_API < MXM_VERSION(2,0)
mxm_send_req->base.flags = 0;
mxm_send_req->opcode = MXM_REQ_OP_SEND;
if (mode == MCA_PML_BASE_SEND_SYNCHRONOUS) {
mxm_send_req->base.flags |= MXM_REQ_FLAG_SEND_SYNC;
}
#else
#if defined(MXM_REQ_SEND_FLAG_REENTRANT)
mxm_send_req->flags = MXM_REQ_SEND_FLAG_REENTRANT;
#else
mxm_send_req->flags = 0;
#endif
if (mode == MCA_PML_BASE_SEND_SYNCHRONOUS) {
mxm_send_req->opcode = MXM_REQ_OP_SEND_SYNC;
} else {
mxm_send_req->opcode = MXM_REQ_OP_SEND;
}
#endif
mxm_send_req->op.send.tag = tag;
mxm_send_req->op.send.imm_data = ompi_comm_rank(comm);
/* post-send */
err = mxm_req_send(mxm_send_req);
if (MXM_OK != err) {
opal_show_help("help-mtl-mxm.txt", "error posting send", true, 1, mxm_error_string(err));
return OMPI_ERROR;
}
return OMPI_SUCCESS;
}
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