static int ucp_wireup_is_reachable(ucp_worker_h worker, ucp_rsc_index_t rsc_index,
const ucp_address_entry_t *ae)
{
ucp_context_h context = worker->context;
return (context->tl_rscs[rsc_index].tl_name_csum == ae->tl_name_csum) &&
uct_iface_is_reachable(worker->ifaces[rsc_index], ae->dev_addr, ae->iface_addr);
}
static ucs_status_t ucp_pick_best_wireup(ucp_worker_h worker, ucp_address_t *address,
ucp_wireup_score_function_t score_func,
ucp_rsc_index_t *src_rsc_index_p,
ucp_rsc_index_t *dst_rsc_index_p,
ucp_rsc_index_t *dst_pd_index_p,
struct sockaddr **addr_p,
uint64_t *reachable_pds,
const char *title)
{
ucp_context_h context = worker->context;
ucp_rsc_index_t src_rsc_index, dst_rsc_index;
ucp_rsc_index_t pd_index;
struct sockaddr *addr, *best_addr;
double score, best_score;
uct_iface_attr_t *iface_attr;
uct_tl_resource_desc_t *resource;
char tl_name[UCT_TL_NAME_MAX];
uct_iface_h iface;
void *iter;
best_addr = NULL;
best_score = 1e-9;
*src_rsc_index_p = -1;
*dst_rsc_index_p = -1;
*dst_pd_index_p = -1;
*reachable_pds = 0;
/*
* Find the best combination of local resource and reachable remote address.
*/
dst_rsc_index = 0;
ucp_address_iter_init(address, &iter);
while (ucp_address_iter_next(&iter, &addr, tl_name, &pd_index)) {
for (src_rsc_index = 0; src_rsc_index < context->num_tls; ++src_rsc_index) {
resource = &context->tl_rscs[src_rsc_index].tl_rsc;
iface = worker->ifaces[src_rsc_index];
iface_attr = &worker->iface_attrs[src_rsc_index];
/* Must be reachable address, on same transport */
if (strcmp(tl_name, resource->tl_name) ||
!uct_iface_is_reachable(iface, addr))
{
continue;
}
*reachable_pds |= UCS_BIT(pd_index);
score = score_func(resource, iface, iface_attr);
ucs_trace("%s " UCT_TL_RESOURCE_DESC_FMT " score %.2f",
title, UCT_TL_RESOURCE_DESC_ARG(resource), score);
if (score > best_score) {
ucs_assert(addr != NULL);
best_score = score;
best_addr = addr;
*src_rsc_index_p = src_rsc_index;
*dst_rsc_index_p = dst_rsc_index;
*dst_pd_index_p = pd_index;
}
}
++dst_rsc_index;
}
if (best_addr == NULL) {
return UCS_ERR_UNREACHABLE;
}
ucs_debug("%s: " UCT_TL_RESOURCE_DESC_FMT " to %d pd %d", title,
UCT_TL_RESOURCE_DESC_ARG(&context->tl_rscs[*src_rsc_index_p].tl_rsc),
*dst_rsc_index_p, *dst_pd_index_p);
*addr_p = best_addr;
return UCS_OK;
}
int main(int argc, char **argv)
{
/* MPI is initially used to swap the endpoint and interface addresses so each
* process has knowledge of the others. */
int partner;
int size, rank;
uct_device_addr_t *own_dev, *peer_dev;
uct_iface_addr_t *own_iface, *peer_iface;
uct_ep_addr_t *own_ep, *peer_ep;
ucs_status_t status; /* status codes for UCS */
uct_ep_h ep; /* Remote endpoint */
ucs_async_context_t async; /* Async event context manages times and fd notifications */
uint8_t id = 0;
void *arg;
const char *tl_name = NULL;
const char *dev_name = NULL;
struct iface_info if_info;
int exit_fail = 1;
optind = 1;
if (3 == argc) {
dev_name = argv[1];
tl_name = argv[2];
} else {
printf("Usage: %s (<dev-name> <tl-name>)\n", argv[0]);
fflush(stdout);
return 1;
}
MPI_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &size);
if (size < 2) {
fprintf(stderr, "Failed to create enough mpi processes\n");
goto out;
}
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if (0 == rank) {
partner = 1;
} else if (1 == rank) {
partner = 0;
} else {
/* just wait for other processes in MPI_Finalize */
exit_fail = 0;
goto out;
}
/* Initialize context */
status = ucs_async_context_init(&async, UCS_ASYNC_MODE_THREAD);
CHKERR_JUMP(UCS_OK != status, "init async context", out);
/* Create a worker object */
status = uct_worker_create(&async, UCS_THREAD_MODE_SINGLE, &if_info.worker);
CHKERR_JUMP(UCS_OK != status, "create worker", out_cleanup_async);
/* Search for the desired transport */
status = dev_tl_lookup(dev_name, tl_name, &if_info);
CHKERR_JUMP(UCS_OK != status, "find supported device and transport", out_destroy_worker);
/* Expect that addr len is the same on both peers */
own_dev = (uct_device_addr_t*)calloc(2, if_info.attr.device_addr_len);
CHKERR_JUMP(NULL == own_dev, "allocate memory for dev addrs", out_destroy_iface);
peer_dev = (uct_device_addr_t*)((char*)own_dev + if_info.attr.device_addr_len);
own_iface = (uct_iface_addr_t*)calloc(2, if_info.attr.iface_addr_len);
CHKERR_JUMP(NULL == own_iface, "allocate memory for if addrs", out_free_dev_addrs);
peer_iface = (uct_iface_addr_t*)((char*)own_iface + if_info.attr.iface_addr_len);
/* Get device address */
status = uct_iface_get_device_address(if_info.iface, own_dev);
CHKERR_JUMP(UCS_OK != status, "get device address", out_free_if_addrs);
MPI_Sendrecv(own_dev, if_info.attr.device_addr_len, MPI_BYTE, partner, 0,
peer_dev, if_info.attr.device_addr_len, MPI_BYTE, partner,0,
MPI_COMM_WORLD, MPI_STATUS_IGNORE);
status = uct_iface_is_reachable(if_info.iface, peer_dev, NULL);
CHKERR_JUMP(0 == status, "reach the peer", out_free_if_addrs);
/* Get interface address */
if (if_info.attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_IFACE) {
status = uct_iface_get_address(if_info.iface, own_iface);
CHKERR_JUMP(UCS_OK != status, "get interface address", out_free_if_addrs);
MPI_Sendrecv(own_iface, if_info.attr.iface_addr_len, MPI_BYTE, partner, 0,
peer_iface, if_info.attr.iface_addr_len, MPI_BYTE, partner,0,
MPI_COMM_WORLD, MPI_STATUS_IGNORE);
}
/* Again, expect that ep addr len is the same on both peers */
own_ep = (uct_ep_addr_t*)calloc(2, if_info.attr.ep_addr_len);
CHKERR_JUMP(NULL == own_ep, "allocate memory for ep addrs", out_free_if_addrs);
peer_ep = (uct_ep_addr_t*)((char*)own_ep + if_info.attr.ep_addr_len);
if (if_info.attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_EP) {
/* Create new endpoint */
status = uct_ep_create(if_info.iface, &ep);
CHKERR_JUMP(UCS_OK != status, "create endpoint", out_free_ep_addrs);
/* Get endpoint address */
status = uct_ep_get_address(ep, own_ep);
CHKERR_JUMP(UCS_OK != status, "get endpoint address", out_free_ep);
}
MPI_Sendrecv(own_ep, if_info.attr.ep_addr_len, MPI_BYTE, partner, 0,
peer_ep, if_info.attr.ep_addr_len, MPI_BYTE, partner, 0,
MPI_COMM_WORLD, MPI_STATUS_IGNORE);
if (if_info.attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_EP) {
/* Connect endpoint to a remote endpoint */
status = uct_ep_connect_to_ep(ep, peer_dev, peer_ep);
MPI_Barrier(MPI_COMM_WORLD);
} else if (if_info.attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_IFACE) {
/* Create an endpoint which is connected to a remote interface */
status = uct_ep_create_connected(if_info.iface, peer_dev, peer_iface, &ep);
} else {
status = UCS_ERR_UNSUPPORTED;
}
CHKERR_JUMP(UCS_OK != status, "connect endpoint", out_free_ep);
/*Set active message handler */
status = uct_iface_set_am_handler(if_info.iface, id, hello_world, arg, UCT_AM_CB_FLAG_SYNC);
CHKERR_JUMP(UCS_OK != status, "set callback", out_free_ep);
if (0 == rank) {
uint64_t header;
char payload[8];
unsigned length = sizeof(payload);
/* Send active message to remote endpoint */
status = uct_ep_am_short(ep, id, header, payload, length);
CHKERR_JUMP(UCS_OK != status, "send active msg", out_free_ep);
} else if (1 == rank) {
while (holder) {
/* Explicitly progress any outstanding active message requests */
uct_worker_progress(if_info.worker);
}
}
/* Everything is fine, we need to call MPI_Finalize rather than MPI_Abort */
exit_fail = 0;
out_free_ep:
uct_ep_destroy(ep);
out_free_ep_addrs:
free(own_ep);
out_free_if_addrs:
free(own_iface);
out_free_dev_addrs:
free(own_dev);
out_destroy_iface:
uct_iface_close(if_info.iface);
uct_md_close(if_info.pd);
out_destroy_worker:
uct_worker_destroy(if_info.worker);
out_cleanup_async:
ucs_async_context_cleanup(&async);
out:
(0 == exit_fail) ? MPI_Finalize() : MPI_Abort(MPI_COMM_WORLD, 1);
return exit_fail;
}
static ucs_status_t uct_perf_test_setup_endpoints(ucx_perf_context_t *perf)
{
const size_t buffer_size = 2048;
ucx_perf_ep_info_t info, *remote_info;
unsigned group_size, i, group_index;
uct_device_addr_t *dev_addr;
uct_iface_addr_t *iface_addr;
uct_ep_addr_t *ep_addr;
uct_iface_attr_t iface_attr;
uct_md_attr_t md_attr;
void *rkey_buffer;
ucs_status_t status;
struct iovec vec[5];
void *buffer;
void *req;
buffer = malloc(buffer_size);
if (buffer == NULL) {
ucs_error("Failed to allocate RTE buffer");
status = UCS_ERR_NO_MEMORY;
goto err;
}
status = uct_iface_query(perf->uct.iface, &iface_attr);
if (status != UCS_OK) {
ucs_error("Failed to uct_iface_query: %s", ucs_status_string(status));
goto err_free;
}
status = uct_md_query(perf->uct.md, &md_attr);
if (status != UCS_OK) {
ucs_error("Failed to uct_md_query: %s", ucs_status_string(status));
goto err_free;
}
if (md_attr.cap.flags & (UCT_MD_FLAG_ALLOC|UCT_MD_FLAG_REG)) {
info.rkey_size = md_attr.rkey_packed_size;
} else {
info.rkey_size = 0;
}
info.uct.dev_addr_len = iface_attr.device_addr_len;
info.uct.iface_addr_len = iface_attr.iface_addr_len;
info.uct.ep_addr_len = iface_attr.ep_addr_len;
info.recv_buffer = (uintptr_t)perf->recv_buffer;
rkey_buffer = buffer;
dev_addr = (void*)rkey_buffer + info.rkey_size;
iface_addr = (void*)dev_addr + info.uct.dev_addr_len;
ep_addr = (void*)iface_addr + info.uct.iface_addr_len;
ucs_assert_always((void*)ep_addr + info.uct.ep_addr_len <= buffer + buffer_size);
status = uct_iface_get_device_address(perf->uct.iface, dev_addr);
if (status != UCS_OK) {
ucs_error("Failed to uct_iface_get_device_address: %s",
ucs_status_string(status));
goto err_free;
}
status = uct_iface_get_address(perf->uct.iface, iface_addr);
if (status != UCS_OK) {
ucs_error("Failed to uct_iface_get_address: %s", ucs_status_string(status));
goto err_free;
}
if (info.rkey_size > 0) {
status = uct_md_mkey_pack(perf->uct.md, perf->uct.recv_mem.memh, rkey_buffer);
if (status != UCS_OK) {
ucs_error("Failed to uct_rkey_pack: %s", ucs_status_string(status));
goto err_free;
}
}
group_size = rte_call(perf, group_size);
group_index = rte_call(perf, group_index);
perf->uct.peers = calloc(group_size, sizeof(*perf->uct.peers));
if (perf->uct.peers == NULL) {
goto err_free;
}
if (iface_attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_EP) {
for (i = 0; i < group_size; ++i) {
if (i == group_index) {
continue;
}
status = uct_ep_create(perf->uct.iface, &perf->uct.peers[i].ep);
if (status != UCS_OK) {
ucs_error("Failed to uct_ep_create: %s", ucs_status_string(status));
goto err_destroy_eps;
}
status = uct_ep_get_address(perf->uct.peers[i].ep, ep_addr);
if (status != UCS_OK) {
ucs_error("Failed to uct_ep_get_address: %s", ucs_status_string(status));
goto err_destroy_eps;
}
}
}
vec[0].iov_base = &info;
vec[0].iov_len = sizeof(info);
vec[1].iov_base = buffer;
vec[1].iov_len = info.rkey_size + info.uct.dev_addr_len +
info.uct.iface_addr_len + info.uct.ep_addr_len;
rte_call(perf, post_vec, vec, 2, &req);
rte_call(perf, exchange_vec, req);
for (i = 0; i < group_size; ++i) {
if (i == group_index) {
continue;
}
rte_call(perf, recv, i, buffer, buffer_size, req);
remote_info = buffer;
rkey_buffer = remote_info + 1;
dev_addr = (void*)rkey_buffer + remote_info->rkey_size;
iface_addr = (void*)dev_addr + remote_info->uct.dev_addr_len;
ep_addr = (void*)iface_addr + remote_info->uct.iface_addr_len;
perf->uct.peers[i].remote_addr = remote_info->recv_buffer;
if (!uct_iface_is_reachable(perf->uct.iface, dev_addr,
remote_info->uct.iface_addr_len ?
iface_addr : NULL)) {
ucs_error("Destination is unreachable");
status = UCS_ERR_UNREACHABLE;
goto err_destroy_eps;
}
if (remote_info->rkey_size > 0) {
status = uct_rkey_unpack(rkey_buffer, &perf->uct.peers[i].rkey);
if (status != UCS_OK) {
ucs_error("Failed to uct_rkey_unpack: %s", ucs_status_string(status));
goto err_destroy_eps;
}
} else {
perf->uct.peers[i].rkey.handle = NULL;
perf->uct.peers[i].rkey.type = NULL;
perf->uct.peers[i].rkey.rkey = UCT_INVALID_RKEY;
}
if (iface_attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_EP) {
status = uct_ep_connect_to_ep(perf->uct.peers[i].ep, dev_addr, ep_addr);
} else if (iface_attr.cap.flags & UCT_IFACE_FLAG_CONNECT_TO_IFACE) {
status = uct_ep_create_connected(perf->uct.iface, dev_addr, iface_addr,
&perf->uct.peers[i].ep);
} else {
status = UCS_ERR_UNSUPPORTED;
}
if (status != UCS_OK) {
ucs_error("Failed to connect endpoint: %s", ucs_status_string(status));
goto err_destroy_eps;
}
}
uct_perf_iface_flush_b(perf);
free(buffer);
rte_call(perf, barrier);
return UCS_OK;
err_destroy_eps:
for (i = 0; i < group_size; ++i) {
if (perf->uct.peers[i].rkey.type != NULL) {
uct_rkey_release(&perf->uct.peers[i].rkey);
}
if (perf->uct.peers[i].ep != NULL) {
uct_ep_destroy(perf->uct.peers[i].ep);
}
}
free(perf->uct.peers);
err_free:
free(buffer);
err:
return status;
}