int
main(int argc, char* argv[])
{
size_t packed_ddt_len;
const void *packed_ddt;
void *payload, *ptr;
struct ompi_datatype_t *unpacked_dt;
int ret = 0;
int blen[2];
MPI_Aint disp[2];
MPI_Datatype newType, types[2], struct_type;
MPI_Init(&argc, &argv);
/* Basic test... */
printf("---> Basic test with MPI_INT\n");
packed_ddt_len = ompi_ddt_pack_description_length(MPI_INT);
ptr = payload = malloc(packed_ddt_len);
ret = ompi_ddt_get_pack_description(MPI_INT, &packed_ddt);
if (ret != 0) goto cleanup;
memcpy(payload, packed_ddt, packed_ddt_len);
unpacked_dt = ompi_ddt_create_from_packed_description(&payload,
ompi_proc_local());
free(ptr);
if (unpacked_dt == MPI_INT) {
printf("\tPASSED\n");
} else {
printf("\tFAILED: datatypes don't match\n");
ret = 1;
goto cleanup;
}
printf("---> Advanced test with hindexed\n");
blen[0] = 10;
blen[1] = 10;
disp[0] = 0;
disp[1] = 20*sizeof(double);
ret = MPI_Type_create_hindexed(2, blen, disp, MPI_DOUBLE,
&newType);
if (ret != 0) goto cleanup;
ret = MPI_Type_commit(&newType);
if (ret != 0) goto cleanup;
packed_ddt_len = ompi_ddt_pack_description_length(newType);
ptr = payload = malloc(packed_ddt_len);
ret = ompi_ddt_get_pack_description(newType, &packed_ddt);
if (ret != 0) goto cleanup;
memcpy(payload, packed_ddt, packed_ddt_len);
unpacked_dt = ompi_ddt_create_from_packed_description(&payload,
ompi_proc_local());
free(ptr);
if (unpacked_dt != NULL) {
printf("\tPASSED\n");
} else {
printf("\tFAILED: datatypes don't match\n");
ret = 1;
goto cleanup;
}
printf("---> Even more advanced test using the previous type and struct\n");
blen[0] = 11;
blen[1] = 2;
disp[0] = 0;
disp[1] = 64;
types[0] = MPI_INT;
types[1] = newType;
MPI_Type_create_struct( 2, blen, disp, types, &struct_type );
if (ret != 0) goto cleanup;
ret = MPI_Type_commit(&struct_type);
if (ret != 0) goto cleanup;
packed_ddt_len = ompi_ddt_pack_description_length(struct_type);
ptr = payload = malloc(packed_ddt_len);
ret = ompi_ddt_get_pack_description(struct_type, &packed_ddt);
if (ret != 0) goto cleanup;
memcpy(payload, packed_ddt, packed_ddt_len);
unpacked_dt = ompi_ddt_create_from_packed_description(&payload,
ompi_proc_local());
free(ptr);
if (unpacked_dt != NULL) {
printf("\tPASSED\n");
} else {
printf("\tFAILED: datatypes don't match\n");
ret = 1;
goto cleanup;
}
cleanup:
MPI_Finalize();
return ret;
}
/* create the initial fragment, pack header, datatype, and payload (if
size fits) and send */
int
ompi_osc_pt2pt_sendreq_send(ompi_osc_pt2pt_module_t *module,
ompi_osc_pt2pt_sendreq_t *sendreq)
{
int ret = OMPI_SUCCESS;
opal_free_list_item_t *item;
ompi_osc_pt2pt_send_header_t *header = NULL;
ompi_osc_pt2pt_buffer_t *buffer = NULL;
size_t written_data = 0;
size_t needed_len = sizeof(ompi_osc_pt2pt_send_header_t);
const void *packed_ddt;
size_t packed_ddt_len = ompi_ddt_pack_description_length(sendreq->req_target_datatype);
/* we always need to send the ddt */
needed_len += packed_ddt_len;
if (OMPI_OSC_PT2PT_GET != sendreq->req_type) {
needed_len += sendreq->req_origin_bytes_packed;
}
/* Get a buffer */
OPAL_FREE_LIST_GET(&mca_osc_pt2pt_component.p2p_c_buffers,
item, ret);
if (NULL == item) {
ret = OMPI_ERR_TEMP_OUT_OF_RESOURCE;
goto cleanup;
}
buffer = (ompi_osc_pt2pt_buffer_t*) item;
/* verify at least enough space for header */
if (mca_osc_pt2pt_component.p2p_c_eager_size < sizeof(ompi_osc_pt2pt_send_header_t)) {
ret = OMPI_ERR_OUT_OF_RESOURCE;
goto cleanup;
}
/* setup buffer */
buffer->cbfunc = ompi_osc_pt2pt_sendreq_send_cb;
buffer->cbdata = (void*) sendreq;
/* pack header */
header = (ompi_osc_pt2pt_send_header_t*) buffer->payload;
written_data += sizeof(ompi_osc_pt2pt_send_header_t);
header->hdr_base.hdr_flags = 0;
header->hdr_windx = sendreq->req_module->p2p_comm->c_contextid;
header->hdr_origin = sendreq->req_module->p2p_comm->c_my_rank;
header->hdr_origin_sendreq.pval = (void*) sendreq;
header->hdr_origin_tag = 0;
header->hdr_target_disp = sendreq->req_target_disp;
header->hdr_target_count = sendreq->req_target_count;
switch (sendreq->req_type) {
case OMPI_OSC_PT2PT_PUT:
header->hdr_base.hdr_type = OMPI_OSC_PT2PT_HDR_PUT;
#if OMPI_ENABLE_MEM_DEBUG
header->hdr_target_op = 0;
#endif
break;
case OMPI_OSC_PT2PT_ACC:
header->hdr_base.hdr_type = OMPI_OSC_PT2PT_HDR_ACC;
header->hdr_target_op = sendreq->req_op_id;
break;
case OMPI_OSC_PT2PT_GET:
header->hdr_base.hdr_type = OMPI_OSC_PT2PT_HDR_GET;
#if OMPI_ENABLE_MEM_DEBUG
header->hdr_target_op = 0;
#endif
break;
}
/* Set datatype id and / or pack datatype */
ret = ompi_ddt_get_pack_description(sendreq->req_target_datatype, &packed_ddt);
if (OMPI_SUCCESS != ret) goto cleanup;
memcpy((unsigned char*) buffer->payload + written_data,
packed_ddt, packed_ddt_len);
written_data += packed_ddt_len;
if (OMPI_OSC_PT2PT_GET != sendreq->req_type) {
/* if sending data and it fits, pack payload */
if (mca_osc_pt2pt_component.p2p_c_eager_size >=
written_data + sendreq->req_origin_bytes_packed) {
struct iovec iov;
uint32_t iov_count = 1;
size_t max_data = sendreq->req_origin_bytes_packed;
iov.iov_len = max_data;
iov.iov_base = (IOVBASE_TYPE*)((unsigned char*) buffer->payload + written_data);
ret = ompi_convertor_pack(&sendreq->req_origin_convertor, &iov, &iov_count,
&max_data );
if (ret < 0) {
ret = OMPI_ERR_FATAL;
goto cleanup;
}
assert(max_data == sendreq->req_origin_bytes_packed);
written_data += max_data;
header->hdr_msg_length = sendreq->req_origin_bytes_packed;
} else {
header->hdr_msg_length = 0;
header->hdr_origin_tag = create_send_tag(module);
}
} else {
header->hdr_msg_length = 0;
}
buffer->len = written_data;
#ifdef WORDS_BIGENDIAN
header->hdr_base.hdr_flags |= OMPI_OSC_PT2PT_HDR_FLAG_NBO;
#elif OMPI_ENABLE_HETEROGENEOUS_SUPPORT
if (sendreq->req_target_proc->proc_arch & OMPI_ARCH_ISBIGENDIAN) {
header->hdr_base.hdr_flags |= OMPI_OSC_PT2PT_HDR_FLAG_NBO;
OMPI_OSC_PT2PT_SEND_HDR_HTON(*header);
}
#endif
/* send fragment */
opal_output_verbose(51, ompi_osc_base_output,
"%d sending sendreq to %d",
sendreq->req_module->p2p_comm->c_my_rank,
sendreq->req_target_rank);
ret = MCA_PML_CALL(isend(buffer->payload,
buffer->len,
MPI_BYTE,
sendreq->req_target_rank,
-200,
MCA_PML_BASE_SEND_STANDARD,
module->p2p_comm,
&buffer->request));
opal_list_append(&module->p2p_pending_control_sends,
&buffer->super.super);
goto done;
cleanup:
if (item != NULL) {
OPAL_FREE_LIST_RETURN(&mca_osc_pt2pt_component.p2p_c_buffers,
item);
}
done:
return ret;
}
