static ucs_status_t uct_perf_create_pd(ucx_perf_context_t *perf)
{
uct_pd_resource_desc_t *pd_resources;
uct_tl_resource_desc_t *tl_resources;
unsigned i, num_pd_resources;
unsigned j, num_tl_resources;
ucs_status_t status;
uct_pd_h pd;
uct_pd_config_t *pd_config;
status = uct_query_pd_resources(&pd_resources, &num_pd_resources);
if (status != UCS_OK) {
goto out;
}
for (i = 0; i < num_pd_resources; ++i) {
status = uct_pd_config_read(pd_resources[i].pd_name, NULL, NULL, &pd_config);
if (status != UCS_OK) {
goto out_release_pd_resources;
}
status = uct_pd_open(pd_resources[i].pd_name, pd_config, &pd);
uct_config_release(pd_config);
if (status != UCS_OK) {
goto out_release_pd_resources;
}
status = uct_pd_query_tl_resources(pd, &tl_resources, &num_tl_resources);
if (status != UCS_OK) {
uct_pd_close(pd);
goto out_release_pd_resources;
}
for (j = 0; j < num_tl_resources; ++j) {
if (!strcmp(perf->params.uct.tl_name, tl_resources[j].tl_name) &&
!strcmp(perf->params.uct.dev_name, tl_resources[j].dev_name))
{
uct_release_tl_resource_list(tl_resources);
perf->uct.pd = pd;
status = UCS_OK;
goto out_release_pd_resources;
}
}
uct_pd_close(pd);
uct_release_tl_resource_list(tl_resources);
}
ucs_error("Cannot use transport %s on device %s", perf->params.uct.tl_name,
perf->params.uct.dev_name);
status = UCS_ERR_NO_DEVICE;
out_release_pd_resources:
uct_release_pd_resource_list(pd_resources);
out:
return status;
}
static ucs_status_t ucp_add_tl_resources(ucp_context_h context,
uct_pd_h pd, ucp_rsc_index_t pd_index,
const ucp_config_t *config,
unsigned *num_resources_p,
uint64_t *masks)
{
uct_tl_resource_desc_t *tl_resources;
ucp_tl_resource_desc_t *tmp;
unsigned num_resources;
ucs_status_t status;
ucp_rsc_index_t i;
*num_resources_p = 0;
/* check what are the available uct resources */
status = uct_pd_query_tl_resources(pd, &tl_resources, &num_resources);
if (status != UCS_OK) {
ucs_error("Failed to query resources: %s", ucs_status_string(status));
goto err;
}
if (num_resources == 0) {
ucs_debug("No tl resources found for pd %s", context->pd_rscs[pd_index].pd_name);
goto out_free_resources;
}
tmp = ucs_realloc(context->tl_rscs,
sizeof(*context->tl_rscs) * (context->num_tls + num_resources),
"ucp resources");
if (tmp == NULL) {
ucs_error("Failed to allocate resources");
status = UCS_ERR_NO_MEMORY;
goto err_free_resources;
}
/* copy only the resources enabled by user configuration */
context->tl_rscs = tmp;
for (i = 0; i < num_resources; ++i) {
if (ucp_is_resource_enabled(&tl_resources[i], config, masks)) {
context->tl_rscs[context->num_tls].tl_rsc = tl_resources[i];
context->tl_rscs[context->num_tls].pd_index = pd_index;
++context->num_tls;
++(*num_resources_p);
}
}
out_free_resources:
uct_release_tl_resource_list(tl_resources);
return UCS_OK;
err_free_resources:
uct_release_tl_resource_list(tl_resources);
err:
return status;
}
/* Device and transport to be used are determined by minimum latency */
static ucs_status_t dev_tl_lookup()
{
int i;
int j;
uint64_t min_latency = UINT64_MAX;
int pd_index = -1;
int tl_index = -1;
ucs_status_t status;
uct_pd_resource_desc_t *pd_resources; /* Protection domain resource descriptor */
uct_tl_resource_desc_t *tl_resources; /*Communication resource descriptor */
unsigned num_pd_resources; /* Number of protected domain */
unsigned num_tl_resources; /* Number of transport resources resource objects created */
status = uct_query_pd_resources(&pd_resources, &num_pd_resources);
if (UCS_OK != status) {
fprintf(stderr, "Failed to query for protected domain resources.\n");
goto out1;
}
/* Iterate through protected domain resources */
for (i = 0; i < num_pd_resources; ++i) {
status = uct_pd_open(pd_resources[i].pd_name, &pd);
if (UCS_OK != status) {
fprintf(stderr, "Failed to open protected domain.\n"); fflush(stderr);
goto release1;
}
status = uct_pd_query_tl_resources(pd, &tl_resources, &num_tl_resources);
if (UCS_OK != status) {
fprintf(stderr, "Failed to query transport resources.\n"); fflush(stderr);
uct_pd_close(pd);
goto release1;
}
/* Go through each available transport resource for a particular protected domain
* and keep track of the fastest latency */
for (j = 0; j < num_tl_resources; ++j) {
status = resource_supported(tl_resources[j].dev_name, tl_resources[j].tl_name, 1);
if (UCS_OK == status) {
if (tl_resources[j].latency < min_latency) {
min_latency = tl_resources[j].latency;
pd_index = i;
tl_index = j;
}
}
}
uct_release_tl_resource_list(tl_resources);
uct_pd_close(pd);
}
/* Check if any valid device/transport found */
if ((-1 == pd_index) || (-1 == tl_index)) {
uct_release_pd_resource_list(pd_resources);
return UCS_ERR_UNSUPPORTED;
}
/* IMPORTANT: Certain functions that operate on an interface rely on a pointer to the protection domain that created it */
/* Reopen new protection domain and */
status = uct_pd_open(pd_resources[pd_index].pd_name, &pd);
if (UCS_OK != status) {
fprintf(stderr, "Failed to open final protected domain.\n"); fflush(stderr);
goto release1;
}
/* Open new tranport resources */
status = uct_pd_query_tl_resources(pd, &tl_resources, &num_tl_resources);
if (UCS_OK != status) {
fprintf(stderr, "Failed to query final transport resources.\n"); fflush(stderr);
uct_pd_close(pd);
goto release1;
}
/* Call resource_supported() again to set the interface */
status = resource_supported(tl_resources[tl_index].dev_name, tl_resources[tl_index].tl_name, 0);
if (UCS_OK != status) {
fprintf(stderr, "Failed to initialize final interface.\n"); fflush(stderr);
uct_pd_close(pd);
return status;
}
printf("Using %s with %s.\n", tl_resources[tl_index].dev_name, tl_resources[tl_index].tl_name);fflush(stdout);
uct_release_tl_resource_list(tl_resources);
release1:
uct_release_pd_resource_list(pd_resources);
out1:
return status;
}
static ucs_status_t ucp_add_tl_resources(ucp_context_h context,
uct_pd_h pd, ucp_rsc_index_t pd_index,
const ucp_config_t *config,
unsigned *num_resources_p)
{
uint64_t used_devices_mask, mask, config_devices_mask;
uct_tl_resource_desc_t *tl_resources;
ucp_tl_resource_desc_t *tmp;
unsigned num_resources;
ucs_status_t status;
ucp_rsc_index_t i;
*num_resources_p = 0;
/* check what are the available uct resources */
status = uct_pd_query_tl_resources(pd, &tl_resources, &num_resources);
if (status != UCS_OK) {
ucs_error("Failed to query resources: %s", ucs_status_string(status));
goto err;
}
if (num_resources == 0) {
ucs_debug("No tl resources found for pd %s", context->pd_rscs[pd_index].pd_name);
goto out_free_resources;
}
tmp = ucs_realloc(context->tl_rscs,
sizeof(*context->tl_rscs) * (context->num_tls + num_resources),
"ucp resources");
if (tmp == NULL) {
ucs_error("Failed to allocate resources");
status = UCS_ERR_NO_MEMORY;
goto err_free_resources;
}
/* mask of all devices from configuration which were used */
used_devices_mask = 0;
/* copy only the resources enabled by user configuration */
context->tl_rscs = tmp;
for (i = 0; i < num_resources; ++i) {
if (ucp_is_resource_enabled(&tl_resources[i], config, &mask)) {
context->tl_rscs[context->num_tls].tl_rsc = tl_resources[i];
context->tl_rscs[context->num_tls].pd_index = pd_index;
++context->num_tls;
used_devices_mask |= mask;
++(*num_resources_p);
}
}
/* if all devices should be used, check that */
config_devices_mask = UCS_MASK_SAFE(config->devices.count);
if (config->force_all_devices && (used_devices_mask != config_devices_mask)) {
i = ucs_ffs64(used_devices_mask ^ config_devices_mask);
ucs_error("device %s is not available", config->devices.names[i]);
status = UCS_ERR_NO_DEVICE;
goto err_free_resources;
}
out_free_resources:
uct_release_tl_resource_list(tl_resources);
return UCS_OK;
err_free_resources:
uct_release_tl_resource_list(tl_resources);
err:
return status;
}
