ucs_status_t uct_iface_mem_alloc(uct_iface_h tl_iface, size_t length, unsigned flags,
const char *name, uct_allocated_memory_t *mem)
{
uct_base_iface_t *iface = ucs_derived_of(tl_iface, uct_base_iface_t);
uct_md_attr_t md_attr;
ucs_status_t status;
status = uct_mem_alloc(NULL, length, UCT_MD_MEM_ACCESS_ALL,
iface->config.alloc_methods,
iface->config.num_alloc_methods, &iface->md, 1,
name, mem);
if (status != UCS_OK) {
goto err;
}
/* If the memory was not allocated using MD, register it */
if (mem->method != UCT_ALLOC_METHOD_MD) {
status = uct_md_query(iface->md, &md_attr);
if (status != UCS_OK) {
goto err_free;
}
/* If MD does not support registration, allow only the MD method */
if ((md_attr.cap.flags & UCT_MD_FLAG_REG) &&
(md_attr.cap.reg_mem_types & UCS_BIT(mem->mem_type))) {
status = uct_md_mem_reg(iface->md, mem->address, mem->length, flags,
&mem->memh);
if (status != UCS_OK) {
goto err_free;
}
ucs_assert(mem->memh != UCT_MEM_HANDLE_NULL);
} else {
mem->memh = UCT_MEM_HANDLE_NULL;
}
mem->md = iface->md;
}
return UCS_OK;
err_free:
uct_mem_free(mem);
err:
return status;
}
ucs_status_t uct_iface_mem_alloc(uct_iface_h tl_iface, size_t length,
const char *name, uct_allocated_memory_t *mem)
{
uct_base_iface_t *iface = ucs_derived_of(tl_iface, uct_base_iface_t);
uct_md_attr_t md_attr;
ucs_status_t status;
status = uct_mem_alloc(length, iface->config.alloc_methods,
iface->config.num_alloc_methods, &iface->md, 1,
name, mem);
if (status != UCS_OK) {
goto err;
}
/* If the memory was not allocated using MD, register it */
if (mem->method != UCT_ALLOC_METHOD_MD) {
status = uct_md_query(iface->md, &md_attr);
if (status != UCS_OK) {
goto err_free;
}
/* If MD does not support registration, allow only the MD method */
if (!(md_attr.cap.flags & UCT_MD_FLAG_REG)) {
ucs_error("%s md does not support registration, so cannot use any allocation "
"method except 'md'", iface->md->component->name);
status = UCS_ERR_NO_MEMORY;
goto err_free;
}
status = uct_md_mem_reg(iface->md, mem->address, mem->length, &mem->memh);
if (status != UCS_OK) {
goto err_free;
}
ucs_assert(mem->memh != UCT_INVALID_MEM_HANDLE);
mem->md = iface->md;
}
return UCS_OK;
err_free:
uct_mem_free(mem);
err:
return status;
}
static ucs_status_t ucp_fill_resources(ucp_context_h context,
const ucp_config_t *config)
{
unsigned num_tl_resources;
unsigned num_md_resources;
uct_md_resource_desc_t *md_rscs;
ucs_status_t status;
ucp_rsc_index_t i;
unsigned md_index;
uct_md_h md;
uct_md_config_t *md_config;
uint64_t masks[UCT_DEVICE_TYPE_LAST] = {0};
/* if we got here then num_resources > 0.
* if the user's device list is empty, there is no match */
if ((0 == config->devices[UCT_DEVICE_TYPE_NET].count) &&
(0 == config->devices[UCT_DEVICE_TYPE_SHM].count) &&
(0 == config->devices[UCT_DEVICE_TYPE_ACC].count) &&
(0 == config->devices[UCT_DEVICE_TYPE_SELF].count)) {
ucs_error("The device lists are empty. Please specify the devices you would like to use "
"or omit the UCX_*_DEVICES so that the default will be used.");
status = UCS_ERR_NO_ELEM;
goto err;
}
/* if we got here then num_resources > 0.
* if the user's tls list is empty, there is no match */
if (0 == config->tls.count) {
ucs_error("The TLs list is empty. Please specify the transports you would like to use "
"or omit the UCX_TLS so that the default will be used.");
status = UCS_ERR_NO_ELEM;
goto err;
}
/* List memory domain resources */
status = uct_query_md_resources(&md_rscs, &num_md_resources);
if (status != UCS_OK) {
goto err;
}
/* Sort md's by name, to increase the likelihood of reusing the same ep
* configuration (since remote md map is part of the key).
*/
qsort(md_rscs, num_md_resources, sizeof(*md_rscs), ucp_md_rsc_compare_name);
/* Error check: Make sure there is at least one MD */
if (num_md_resources == 0) {
ucs_error("No md resources found");
status = UCS_ERR_NO_DEVICE;
goto err_release_md_resources;
}
context->num_mds = 0;
context->md_rscs = NULL;
context->mds = NULL;
context->md_attrs = NULL;
context->num_tls = 0;
context->tl_rscs = NULL;
/* Allocate array of MD resources we would actually use */
context->md_rscs = ucs_calloc(num_md_resources, sizeof(*context->md_rscs),
"ucp_md_resources");
if (context->md_rscs == NULL) {
status = UCS_ERR_NO_MEMORY;
goto err_free_context_resources;
}
/* Allocate array of memory domains */
context->mds = ucs_calloc(num_md_resources, sizeof(*context->mds), "ucp_mds");
if (context->mds == NULL) {
status = UCS_ERR_NO_MEMORY;
goto err_free_context_resources;
}
/* Allocate array of memory domains attributes */
context->md_attrs = ucs_calloc(num_md_resources, sizeof(*context->md_attrs),
"ucp_md_attrs");
if (context->md_attrs == NULL) {
status = UCS_ERR_NO_MEMORY;
goto err_free_context_resources;
}
/* Open all memory domains, keep only those which have at least one TL
* resources selected on them.
*/
md_index = 0;
for (i = 0; i < num_md_resources; ++i) {
status = uct_md_config_read(md_rscs[i].md_name, NULL, NULL, &md_config);
if (status != UCS_OK) {
goto err_free_context_resources;
}
status = uct_md_open(md_rscs[i].md_name, md_config, &md);
uct_config_release(md_config);
if (status != UCS_OK) {
goto err_free_context_resources;
}
context->md_rscs[md_index] = md_rscs[i];
context->mds[md_index] = md;
/* Save MD attributes */
status = uct_md_query(md, &context->md_attrs[md_index]);
if (status != UCS_OK) {
goto err_free_context_resources;
}
/* Add communication resources of each MD */
status = ucp_add_tl_resources(context, md, md_index, config,
&num_tl_resources, masks);
if (status != UCS_OK) {
goto err_free_context_resources;
}
/* If the MD does not have transport resources, don't use it */
if (num_tl_resources > 0) {
++md_index;
++context->num_mds;
} else {
ucs_debug("closing md %s because it has no selected transport resources",
md_rscs[i].md_name);
uct_md_close(md);
}
}
/* Error check: Make sure there is at least one transport */
if (0 == context->num_tls) {
ucs_error("There are no available resources matching the configured criteria");
status = UCS_ERR_NO_DEVICE;
goto err_free_context_resources;
}
if (context->num_mds > UCP_MD_INDEX_BITS) {
ucs_error("Only up to %d memory domains are supported (have: %d)",
UCP_MD_INDEX_BITS, context->num_mds);
status = UCS_ERR_EXCEEDS_LIMIT;
goto err_release_md_resources;
}
/* Notify the user if there are devices from the command line that are not available */
ucp_check_unavailable_devices(config->devices, masks);
/* Error check: Make sure there are not too many transports */
if (context->num_tls >= UCP_MAX_RESOURCES) {
ucs_error("Exceeded resources limit (%u requested, up to %d are supported)",
context->num_tls, UCP_MAX_RESOURCES);
status = UCS_ERR_EXCEEDS_LIMIT;
goto err_free_context_resources;
}
status = ucp_check_tl_names(context);
if (status != UCS_OK) {
goto err_free_context_resources;
}
uct_release_md_resource_list(md_rscs);
return UCS_OK;
err_free_context_resources:
ucp_free_resources(context);
err_release_md_resources:
uct_release_md_resource_list(md_rscs);
err:
return status;
}
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;
}
ucs_status_t uct_mem_alloc(size_t min_length, uct_alloc_method_t *methods,
unsigned num_methods, uct_md_h *mds, unsigned num_mds,
const char *alloc_name, uct_allocated_memory_t *mem)
{
uct_alloc_method_t *method;
uct_md_attr_t md_attr;
ucs_status_t status;
size_t alloc_length;
unsigned md_index;
uct_mem_h memh;
uct_md_h md;
void *address;
int shmid;
if (min_length == 0) {
ucs_error("Allocation length cannot be 0");
return UCS_ERR_INVALID_PARAM;
}
if (num_methods == 0) {
ucs_error("No allocation methods provided");
return UCS_ERR_INVALID_PARAM;
}
for (method = methods; method < methods + num_methods; ++method) {
ucs_debug("trying allocation method %s", uct_alloc_method_names[*method]);
switch (*method) {
case UCT_ALLOC_METHOD_MD:
/* Allocate with one of the specified memory domains */
for (md_index = 0; md_index < num_mds; ++md_index) {
md = mds[md_index];
status = uct_md_query(md, &md_attr);
if (status != UCS_OK) {
ucs_error("Failed to query MD");
return status;
}
/* Check if MD supports allocation */
if (!(md_attr.cap.flags & UCT_MD_FLAG_ALLOC)) {
continue;
}
/* Allocate memory using the MD.
* If the allocation fails, it's considered an error and we don't
* fall-back, because this MD already exposed support for memory
* allocation.
*/
alloc_length = min_length;
status = uct_md_mem_alloc(md, &alloc_length, &address,
alloc_name, &memh);
if (status != UCS_OK) {
ucs_error("failed to allocate %zu bytes using md %s: %s",
alloc_length, md->component->name,
ucs_status_string(status));
return status;
}
ucs_assert(memh != UCT_INVALID_MEM_HANDLE);
mem->md = md;
mem->memh = memh;
goto allocated;
}
break;
case UCT_ALLOC_METHOD_HEAP:
/* Allocate aligned memory using libc allocator */
alloc_length = min_length;
address = ucs_memalign(UCS_SYS_CACHE_LINE_SIZE, alloc_length
UCS_MEMTRACK_VAL);
if (address != NULL) {
goto allocated_without_md;
}
ucs_debug("failed to allocate %zu bytes from the heap", alloc_length);
break;
case UCT_ALLOC_METHOD_MMAP:
/* Request memory from operating system using mmap() */
alloc_length = ucs_align_up_pow2(min_length, ucs_get_page_size());
address = ucs_mmap(NULL, alloc_length, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANON, -1, 0 UCS_MEMTRACK_VAL);
if (address != MAP_FAILED) {
goto allocated_without_md;
}
ucs_debug("failed to mmap %zu bytes: %m", alloc_length);
break;
case UCT_ALLOC_METHOD_HUGE:
/* Allocate huge pages */
alloc_length = min_length;
status = ucs_sysv_alloc(&alloc_length, &address, SHM_HUGETLB, &shmid
UCS_MEMTRACK_VAL);
if (status == UCS_OK) {
goto allocated_without_md;
}
ucs_debug("failed to allocate %zu bytes from hugetlb: %s",
min_length, ucs_status_string(status));
break;
default:
ucs_error("Invalid allocation method %d", *method);
return UCS_ERR_INVALID_PARAM;
}
}
ucs_debug("Could not allocate memory with any of the provided methods");
return UCS_ERR_NO_MEMORY;
allocated_without_md:
mem->md = NULL;
mem->memh = UCT_INVALID_MEM_HANDLE;
allocated:
ucs_debug("allocated %zu bytes at %p using %s", alloc_length, address,
(mem->md == NULL) ? uct_alloc_method_names[*method]
: mem->md->component->name);
mem->address = address;
mem->length = alloc_length;
mem->method = *method;
return UCS_OK;
}
ucs_status_t uct_mem_alloc(void *addr, size_t min_length, unsigned flags,
uct_alloc_method_t *methods, unsigned num_methods,
uct_md_h *mds, unsigned num_mds,
const char *alloc_name, uct_allocated_memory_t *mem)
{
uct_alloc_method_t *method;
uct_md_attr_t md_attr;
ucs_status_t status;
size_t alloc_length;
unsigned md_index;
uct_mem_h memh;
uct_md_h md;
void *address;
int shmid;
unsigned map_flags;
if (min_length == 0) {
ucs_error("Allocation length cannot be 0");
return UCS_ERR_INVALID_PARAM;
}
if (num_methods == 0) {
ucs_error("No allocation methods provided");
return UCS_ERR_INVALID_PARAM;
}
if ((flags & UCT_MD_MEM_FLAG_FIXED) &&
(!addr || ((uintptr_t)addr % ucs_get_page_size()))) {
ucs_debug("UCT_MD_MEM_FLAG_FIXED requires valid page size aligned address");
return UCS_ERR_INVALID_PARAM;
}
for (method = methods; method < methods + num_methods; ++method) {
ucs_debug("trying allocation method %s", uct_alloc_method_names[*method]);
switch (*method) {
case UCT_ALLOC_METHOD_MD:
/* Allocate with one of the specified memory domains */
for (md_index = 0; md_index < num_mds; ++md_index) {
md = mds[md_index];
status = uct_md_query(md, &md_attr);
if (status != UCS_OK) {
ucs_error("Failed to query MD");
return status;
}
/* Check if MD supports allocation */
if (!(md_attr.cap.flags & UCT_MD_FLAG_ALLOC)) {
continue;
}
/* Check if MD supports allocation with fixed address
* if it's requested */
if ((flags & UCT_MD_MEM_FLAG_FIXED) &&
!(md_attr.cap.flags & UCT_MD_FLAG_FIXED)) {
continue;
}
/* Allocate memory using the MD.
* If the allocation fails, it's considered an error and we don't
* fall-back, because this MD already exposed support for memory
* allocation.
*/
alloc_length = min_length;
address = addr;
status = uct_md_mem_alloc(md, &alloc_length, &address, flags,
alloc_name, &memh);
if (status != UCS_OK) {
ucs_error("failed to allocate %zu bytes using md %s: %s",
alloc_length, md->component->name,
ucs_status_string(status));
return status;
}
ucs_assert(memh != UCT_MEM_HANDLE_NULL);
mem->md = md;
mem->memh = memh;
goto allocated;
}
break;
case UCT_ALLOC_METHOD_THP:
#ifdef MADV_HUGEPAGE
if (!ucs_is_thp_enabled()) {
break;
}
/* Fixed option is not supported for thp allocation*/
if (flags & UCT_MD_MEM_FLAG_FIXED) {
break;
}
alloc_length = ucs_align_up(min_length, ucs_get_huge_page_size());
address = ucs_memalign(ucs_get_huge_page_size(), alloc_length
UCS_MEMTRACK_VAL);
if (address != NULL) {
status = madvise(address, alloc_length, MADV_HUGEPAGE);
if (status != UCS_OK) {
ucs_error("madvise failure status (%d) address(%p) len(%zu):"
" %m", status, address, alloc_length);
ucs_free(address);
break;
} else {
goto allocated_without_md;
}
}
ucs_debug("failed to allocate by thp %zu bytes: %m", alloc_length);
#endif
break;
case UCT_ALLOC_METHOD_HEAP:
/* Allocate aligned memory using libc allocator */
/* Fixed option is not supported for heap allocation*/
if (flags & UCT_MD_MEM_FLAG_FIXED) {
break;
}
alloc_length = min_length;
address = ucs_memalign(UCS_SYS_CACHE_LINE_SIZE, alloc_length
UCS_MEMTRACK_VAL);
if (address != NULL) {
goto allocated_without_md;
}
ucs_debug("failed to allocate %zu bytes from the heap", alloc_length);
break;
case UCT_ALLOC_METHOD_MMAP:
map_flags = uct_mem_get_mmap_flags(flags);
/* Request memory from operating system using mmap() */
alloc_length = ucs_align_up_pow2(min_length, ucs_get_page_size());
address = ucs_mmap(addr, alloc_length, PROT_READ | PROT_WRITE,
map_flags, -1, 0 UCS_MEMTRACK_VAL);
if (address != MAP_FAILED) {
goto allocated_without_md;
}
ucs_debug("failed to mmap %zu bytes: %m", alloc_length);
break;
case UCT_ALLOC_METHOD_HUGE:
/* Allocate huge pages */
alloc_length = min_length;
address = (flags & UCT_MD_MEM_FLAG_FIXED) ? addr : NULL;
status = ucs_sysv_alloc(&alloc_length, &address, SHM_HUGETLB, &shmid
UCS_MEMTRACK_VAL);
if (status == UCS_OK) {
goto allocated_without_md;
}
ucs_debug("failed to allocate %zu bytes from hugetlb: %s",
min_length, ucs_status_string(status));
break;
default:
ucs_error("Invalid allocation method %d", *method);
return UCS_ERR_INVALID_PARAM;
}
}
ucs_debug("Could not allocate memory with any of the provided methods");
return UCS_ERR_NO_MEMORY;
allocated_without_md:
mem->md = NULL;
mem->memh = UCT_MEM_HANDLE_NULL;
allocated:
ucs_debug("allocated %zu bytes at %p using %s", alloc_length, address,
(mem->md == NULL) ? uct_alloc_method_names[*method]
: mem->md->component->name);
mem->address = address;
mem->length = alloc_length;
mem->method = *method;
return UCS_OK;
}
static void print_md_info(const char *md_name, int print_opts,
ucs_config_print_flags_t print_flags,
const char *req_tl_name)
{
uct_tl_resource_desc_t *resources, tmp;
unsigned resource_index, j, num_resources, count;
ucs_status_t status;
const char *tl_name;
uct_md_config_t *md_config;
uct_md_attr_t md_attr;
uct_md_h md;
status = uct_md_config_read(md_name, NULL, NULL, &md_config);
if (status != UCS_OK) {
goto out;
}
status = uct_md_open(md_name, md_config, &md);
uct_config_release(md_config);
if (status != UCS_OK) {
printf("# < failed to open memory domain %s >\n", md_name);
goto out;
}
status = uct_md_query_tl_resources(md, &resources, &num_resources);
if (status != UCS_OK) {
printf("# < failed to query memory domain resources >\n");
goto out_close_md;
}
if (req_tl_name != NULL) {
resource_index = 0;
while (resource_index < num_resources) {
if (!strcmp(resources[resource_index].tl_name, req_tl_name)) {
break;
}
++resource_index;
}
if (resource_index == num_resources) {
/* no selected transport on the MD */
goto out_free_list;
}
}
status = uct_md_query(md, &md_attr);
if (status != UCS_OK) {
printf("# < failed to query memory domain >\n");
goto out_free_list;
} else {
printf("#\n");
printf("# Memory domain: %s\n", md_name);
printf("# component: %s\n", md_attr.component_name);
if (md_attr.cap.flags & UCT_MD_FLAG_ALLOC) {
printf("# allocate: %s\n",
size_limit_to_str(md_attr.cap.max_alloc));
}
if (md_attr.cap.flags & UCT_MD_FLAG_REG) {
printf("# register: %s, cost: %.0f",
size_limit_to_str(md_attr.cap.max_reg),
md_attr.reg_cost.overhead * 1e9);
if (md_attr.reg_cost.growth * 1e9 > 1e-3) {
printf("+(%.3f*<SIZE>)", md_attr.reg_cost.growth * 1e9);
}
printf(" nsec\n");
}
printf("# remote key: %zu bytes\n", md_attr.rkey_packed_size);
}
if (num_resources == 0) {
printf("# < no supported devices found >\n");
goto out_free_list;
}
resource_index = 0;
while (resource_index < num_resources) {
/* Gather all resources for this transport */
tl_name = resources[resource_index].tl_name;
count = 1;
for (j = resource_index + 1; j < num_resources; ++j) {
if (!strcmp(tl_name, resources[j].tl_name)) {
tmp = resources[count + resource_index];
resources[count + resource_index] = resources[j];
resources[j] = tmp;
++count;
}
}
if ((req_tl_name == NULL) || !strcmp(tl_name, req_tl_name)) {
print_tl_info(md, tl_name, &resources[resource_index], count,
print_opts, print_flags);
}
resource_index += count;
}
out_free_list:
uct_release_tl_resource_list(resources);
out_close_md:
uct_md_close(md);
out:
;
}