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address.c
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address.c
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/**
* Copyright (c) NVIDIA CORPORATION & AFFILIATES, 2001-2016. ALL RIGHTS RESERVED.
*
* See file LICENSE for terms.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "address.h"
#include "wireup_ep.h"
#include <ucp/core/ucp_worker.h>
#include <ucp/core/ucp_ep.inl>
#include <ucs/arch/bitops.h>
#include <ucs/datastruct/array.h>
#include <ucs/debug/log.h>
#include <ucs/type/serialize.h>
#include <ucs/type/float8.h>
#include <inttypes.h>
#define ucp_address_error(_pack_flags, _fmt, ...) \
if (!((_pack_flags) & UCP_ADDRESS_PACK_FLAG_NO_TRACE)) { \
ucs_error(_fmt, ##__VA_ARGS__); \
}
#define ucp_address_trace(_pack_flags, _fmt, ...) \
if (!((_pack_flags) & UCP_ADDRESS_PACK_FLAG_NO_TRACE)) { \
ucs_trace(_fmt, ##__VA_ARGS__); \
}
/*
* Packed address layout:
*
* [ header(8bit) | uuid(64bit) | client_id | worker_name(string) ]
* [ device1_md_index | device1_address(var) ]
* [ tl1_name_csum(string) | tl1_info | tl1_address(var) ]
* [ tl2_name_csum(string) | tl2_info | tl2_address(var) ]
* ...
* [ device2_md_index | device2_address(var) ]
* ...
*
* * Worker name is packed if UCX_ADDRESS_DEBUG_INFO is enabled.
* * In unified mode tl_info contains just rsc_index and iface latency overhead.
* For last address in the tl address list, it will have LAST flag set.
* * For ep address, lane index contains the LAST flag.
* * In non unified mode tl_info contains iface attributes. LAST flag is set in
* iface address length.
* * If a device does not have tl addresses, it's md_index will have the flag
* EMPTY.
* * If the address list is empty, then it will contain only a single md_index
* which equals to UCP_NULL_RESOURCE.
* * For non-unified mode, ep address contains length with flags. Multiple ep
* addresses could be present and the last one is marked with the flag
* UCP_ADDRESS_FLAG_LAST. For unified mode, there could not be more than one
* ep address.
* * For any mode, ep address is followed by a lane index.
*/
/* Address version 2 format:
*
* addr_version
* ^
* proto_version | flags worker_uuid worker_name
* ^ | ^ ^ ^
* +------+------+---------+---------------+---------+
* | 4 | 4 | 8 | 64 | string +---------+
* +------+------+---------+---------------+---------+ |
* |
* for each device |
* +--------------------------------------------------------------+
* |
* | md_idx(*1) dev_addr_len(*2)
* | extension extension
* | md_idx ^ dev_addr_len ^ npath sys_dev dev_addr
* | ^ | ^ | ^ ^ ^
* | +---+-----+---------+---+-----+--------+--------+--------+-------------+
* +->| 1 | 7 | 8 | 3 | 5 | 8 | 8 | 8 |dev_addr_len +-+
* +---+-----+---------+---+-----+--------+--------+--------+-------------+ |
* v v |
* md_flags dev_flags |
* for each iface
|
* +---------------------------------------------------------------------------+
* | iface_attr(*3) if_addr_len(*4)
* |iface_id ^ if_addr_len extension if_addr
* | ^ | ^ ^ ^
* | +---------+--------+--+-------+----------+-----------+
* +->| 8 |attr_len|2 | 6 | 8 |if_addr_len+-+
* +---------+--------+--+-------+----------+-----------+ |
* v |
* if_flags |
* for each ep |
* +---------------------------------------------------------+
* | ep_addr_len ep_addr lane_idx
* | ^ ^ ^
* | +---------+-----------+-+-------+
* +->| 8 |ep_addr_len|1| 7 |
* +---------+-----------+-+-------+
* v
* ep_flags
*
* (*1) - present and contains actual md id, if md_idx == 127
* (*2) - present and contains actual device address length,
* if dev_addr_len == 31
* (*3) - iface attrs format defined by ucp_address_v2_packed_iface_attr_t
* (*4) - present and contains actual iface address length,
* if if_addr_len == 63
*/
typedef struct {
size_t dev_addr_len;
ucp_tl_bitmap_t tl_bitmap;
ucp_rsc_index_t rsc_index;
ucp_rsc_index_t tl_count;
unsigned num_paths;
ucs_sys_device_t sys_dev;
size_t tl_addrs_size;
} ucp_address_packed_device_t;
typedef struct {
float overhead;
float bandwidth;
float lat_ovh;
uint32_t prio_cap_flags; /* 8 lsb : prio
* 22 msb:
* - iface flags
* - iface event flags
* 2 hsb :
* - amo32
* - amo64 */
} UCS_S_PACKED ucp_address_packed_iface_attr_t;
typedef struct {
ucs_fp8_t overhead;
ucs_fp8_t bandwidth;
ucs_fp8_t latency;
uint8_t prio;
/* Maximal segment size than can be received by this iface */
uint16_t seg_size;
/* Includes caps, event and atomic flags */
uint16_t flags;
} UCS_S_PACKED ucp_address_v2_packed_iface_attr_t;
/* In unified mode we pack resource index instead of iface attrs to the address,
* so the peer can get all attrs from the local device with the same resource
* index.
* Also we send information which depends on device NUMA locality,
* which may be different on peers (processes which do address pack
* and address unpack):
* - latency overhead
* - Indication whether resource can be used for atomics or not (packed to the
* signed bit of lat_ovh).
*
* TODO: Revise/fix this when NUMA locality is exposed in UCP.
* */
typedef struct {
ucp_rsc_index_t rsc_index;
float lat_ovh;
} UCS_S_PACKED ucp_address_unified_iface_attr_t;
/* The following structs are used for manipulating device index, in order to
* include both dev_index and sys_dev into it. */
typedef struct {
ucp_rsc_index_t dev_index;
ucs_sys_device_t sys_dev;
} ucp_address_remote_device_t;
UCS_ARRAY_DECLARE_TYPE(ucp_address_remote_device_array_t, unsigned,
ucp_address_remote_device_t);
#define UCP_ADDRESS_V1_FLAG_ATOMIC32 UCS_BIT(30) /* 32bit atomic operations */
#define UCP_ADDRESS_V1_FLAG_ATOMIC64 UCS_BIT(31) /* 64bit atomic operations */
#define UCP_ADDRESS_FLAG_LAST 0x80u /* Last address in the list */
#define UCP_ADDRESS_FLAG_HAS_EP_ADDR 0x40u /* For iface address:
Indicates that ep addr is packed
right after iface addr */
#define UCP_ADDRESS_FLAG_NUM_PATHS 0x40u /* For device address:
Indicates that number of paths on the
device is packed right after device
address, otherwise number of paths
defaults to 1. */
#define UCP_ADDRESS_FLAG_SYS_DEVICE 0x20u /* For device address:
Indicates that system device is
packed after device address or
number of paths (if present) */
/* Mask for iface and endpoint address length */
#define UCP_ADDRESS_IFACE_LEN_MASK (UCS_MASK(8) ^ \
(UCP_ADDRESS_FLAG_HAS_EP_ADDR | \
UCP_ADDRESS_FLAG_LAST))
/* Mask for device address length */
#define UCP_ADDRESS_DEVICE_LEN_MASK (UCS_MASK(8) ^ \
(UCP_ADDRESS_FLAG_SYS_DEVICE | \
UCP_ADDRESS_FLAG_NUM_PATHS | \
UCP_ADDRESS_FLAG_LAST))
#define UCP_ADDRESS_FLAG_MD_EMPTY_DEV 0x80u /* Device without TL addresses */
#define UCP_ADDRESS_FLAG_MD_ALLOC 0x40u /* MD can register */
#define UCP_ADDRESS_FLAG_MD_REG 0x20u /* MD can allocate */
#define UCP_ADDRESS_FLAG_MD_MASK_V1 (UCS_MASK(8) ^ \
(UCP_ADDRESS_FLAG_MD_EMPTY_DEV | \
UCP_ADDRESS_FLAG_MD_ALLOC | \
UCP_ADDRESS_FLAG_MD_REG))
#define UCP_ADDRESS_FLAG_MD_MASK (UCS_MASK(8) ^ \
UCP_ADDRESS_FLAG_MD_EMPTY_DEV)
#define UCP_ADDRESS_RELEASE_VERSION_BITS 4
#define UCP_ADDRESS_RELEASE_VERSION_MAX UCS_BIT(UCP_ADDRESS_RELEASE_VERSION_BITS)
#define UCP_ADDRESS_HEADER_VERSION_MASK UCS_MASK(4) /* Version - 4 bits */
#define UCP_ADDRESS_HEADER_SHIFT 4
#define UCP_ADDRESS_DEFAULT_WORKER_UUID 0
#define UCP_ADDRESS_DEFAULT_CLIENT_ID 0
enum {
UCP_ADDRESS_HEADER_FLAG_DEBUG_INFO = UCS_BIT(0), /* Address has debug info */
UCP_ADDRESS_HEADER_FLAG_WORKER_UUID = UCS_BIT(1), /* Worker unique id */
UCP_ADDRESS_HEADER_FLAG_CLIENT_ID = UCS_BIT(2), /* Worker client id */
UCP_ADDRESS_HEADER_FLAG_AM_ONLY = UCS_BIT(3) /* Only AM lane info */
};
static size_t ucp_address_iface_attr_size(ucp_worker_t *worker, uint64_t flags,
ucp_object_version_t addr_version)
{
size_t rsc_id_size = (flags & UCP_ADDRESS_PACK_FLAG_TL_RSC_IDX) ?
sizeof(uint8_t) : 0ul;
if (ucp_worker_is_unified_mode(worker)) {
return sizeof(ucp_address_unified_iface_attr_t);
} else if (addr_version == UCP_OBJECT_VERSION_V1) {
return sizeof(ucp_address_packed_iface_attr_t) + rsc_id_size;
} else {
return sizeof(ucp_address_v2_packed_iface_attr_t) + rsc_id_size;
}
}
static uint64_t ucp_worker_iface_can_connect(uct_iface_attr_t *attrs)
{
return attrs->cap.flags &
(UCT_IFACE_FLAG_CONNECT_TO_IFACE | UCT_IFACE_FLAG_CONNECT_TO_EP);
}
/* Pack a string and return a pointer to storage right after the string */
static void *
ucp_address_pack_worker_address_name(ucp_worker_h worker, void *dest)
{
const char *s;
size_t length;
s = ucp_worker_get_address_name(worker);
length = strlen(s);
ucs_assert(length <= UINT8_MAX);
*(uint8_t*)dest = length;
memcpy(UCS_PTR_TYPE_OFFSET(dest, uint8_t), s, length);
return UCS_PTR_BYTE_OFFSET(UCS_PTR_TYPE_OFFSET(dest, uint8_t), length);
}
/* Unpack a string and return pointer to next storage byte */
static const void *
ucp_address_unpack_worker_address_name(const void *src, char *s)
{
size_t length, avail;
length = *(const uint8_t*)src;
avail = ucs_min(length, UCP_WORKER_ADDRESS_NAME_MAX - 1);
memcpy(s, UCS_PTR_TYPE_OFFSET(src, uint8_t), avail);
s[avail] = '\0';
return UCS_PTR_TYPE_OFFSET(UCS_PTR_BYTE_OFFSET(src, length), uint8_t);
}
static uint8_t ucp_address_pack_release_version()
{
return UCP_API_MINOR % UCP_ADDRESS_RELEASE_VERSION_MAX;
}
/* Release version is packed into 4 bits. Unpack it assuming that we do not
* support wire compatibility for more than 8 versions (therefore we take the
* value which is closest to our release version)
*/
static unsigned ucp_address_unpack_release_version(uint8_t packed_version)
{
int range = UCP_ADDRESS_RELEASE_VERSION_MAX;
int delta = ucp_address_pack_release_version() - packed_version;
int base;
base = (UCP_API_MINOR / range) + (delta >= range / 2) -
(delta <= -range / 2);
return packed_version + ucs_max(0, base) * range;
}
static ucp_address_packed_device_t*
ucp_address_get_device(ucp_context_h context, ucp_rsc_index_t rsc_index,
ucp_address_packed_device_t *devices,
ucp_rsc_index_t *num_devices_p)
{
const ucp_tl_resource_desc_t *tl_rsc = context->tl_rscs;
ucp_address_packed_device_t *dev;
for (dev = devices; dev < devices + *num_devices_p; ++dev) {
if ((tl_rsc[rsc_index].md_index == tl_rsc[dev->rsc_index].md_index) &&
(tl_rsc[rsc_index].dev_index == tl_rsc[dev->rsc_index].dev_index)) {
goto out;
}
}
dev = &devices[(*num_devices_p)++];
memset(dev, 0, sizeof(*dev));
out:
return dev;
}
static ssize_t ucp_address_packed_value_size(size_t value, size_t max_value,
ucp_object_version_t addr_version,
const char *dev_name)
{
if (addr_version == UCP_OBJECT_VERSION_V1) {
/* Address version 1 does not support value extension */
if (value > max_value) {
ucs_debug("device %s: value %zu > max_value %zu, use "
"UCX_ADDRESS_VERSION=v2 to allow packing such addresses",
dev_name, value, max_value);
return UCS_ERR_UNSUPPORTED;
}
return sizeof(uint8_t);
} else if (value < max_value) {
/* The value fits into a partial byte, up to max_value */
return sizeof(uint8_t);
} else {
/* The value needs to be extended to a full byte */
ucs_assertv_always(value <= UINT8_MAX, "value %zu", value);
return sizeof(uint8_t) * 2;
}
}
static ssize_t ucp_address_packed_length_size(ucp_worker_h worker,
size_t length, size_t max_length,
ucp_object_version_t addr_version,
const char *dev_name)
{
if (ucp_worker_is_unified_mode(worker)) {
return 0;
}
return ucp_address_packed_value_size(length, max_length, addr_version,
dev_name);
}
static int ucp_address_pack_v1_extra_info(ucp_object_version_t addr_version,
uint64_t pack_flags)
{
return (addr_version == UCP_OBJECT_VERSION_V1) &&
(pack_flags & UCP_ADDRESS_PACK_FLAG_RELEASE_VER_V1);
}
static ucs_status_t
ucp_address_gather_devices(ucp_worker_h worker, const ucp_ep_config_key_t *key,
const ucp_tl_bitmap_t *tl_bitmap, uint64_t flags,
ucp_object_version_t addr_version,
unsigned max_num_paths,
ucp_address_packed_device_t **devices_p,
ucp_rsc_index_t *num_devices_p)
{
ucp_context_h context = worker->context;
ucp_tl_bitmap_t current_tl_bitmap = *tl_bitmap;
ucp_address_packed_device_t *dev, *devices;
uct_iface_attr_t *iface_attr;
ucp_rsc_index_t num_devices;
ucp_rsc_index_t rsc_index;
ucp_lane_index_t lane;
ssize_t length_size;
devices = ucs_calloc(context->num_tls, sizeof(*devices), "packed_devices");
if (devices == NULL) {
return UCS_ERR_NO_MEMORY;
}
num_devices = 0;
UCS_STATIC_BITMAP_AND_INPLACE(¤t_tl_bitmap, context->tl_bitmap);
UCS_STATIC_BITMAP_FOR_EACH_BIT(rsc_index, ¤t_tl_bitmap) {
iface_attr = ucp_worker_iface_get_attr(worker, rsc_index);
if (!ucp_worker_iface_can_connect(iface_attr)) {
continue;
}
dev = ucp_address_get_device(context, rsc_index, devices, &num_devices);
if (flags & UCP_ADDRESS_PACK_FLAG_EP_ADDR) {
ucs_assert(key != NULL);
/* Each lane which matches the resource index adds an ep address
* entry. The length and flags is packed in non-unified mode only.
*/
for (lane = 0; lane < key->num_lanes; ++lane) {
if ((key->lanes[lane].rsc_index == rsc_index) &&
ucp_ep_config_connect_p2p(worker, key, rsc_index)) {
dev->tl_addrs_size += !ucp_worker_is_unified_mode(worker);
dev->tl_addrs_size += iface_attr->ep_addr_len;
dev->tl_addrs_size += sizeof(uint8_t); /* lane index */
}
}
}
dev->tl_addrs_size += sizeof(uint16_t); /* tl name checksum */
if (flags & UCP_ADDRESS_PACK_FLAG_IFACE_ADDR) {
/* iface address (its length will be packed in non-unified mode only) */
dev->tl_addrs_size += iface_attr->iface_addr_len;
/* iface address length (+flags) can take 2 bytes with address
* version 2 in non-unified mode
*/
length_size = ucp_address_packed_length_size(
worker, iface_attr->iface_addr_len,
UCP_ADDRESS_IFACE_LEN_MASK, addr_version,
worker->context->tl_rscs[rsc_index].tl_rsc.dev_name);
if (length_size < 0) {
ucs_free(devices);
return length_size;
}
dev->tl_addrs_size += length_size;
dev->tl_addrs_size += ucp_address_iface_attr_size(worker, flags,
addr_version);
} else {
dev->tl_addrs_size += 1; /* 0-value for valid unpacking */
}
if (flags & UCP_ADDRESS_PACK_FLAG_DEVICE_ADDR) {
dev->dev_addr_len = iface_attr->device_addr_len;
} else {
dev->dev_addr_len = 0;
}
if (flags & UCP_ADDRESS_PACK_FLAG_SYS_DEVICE) {
dev->sys_dev = context->tl_rscs[rsc_index].tl_rsc.sys_device;
} else {
dev->sys_dev = UCS_SYS_DEVICE_ID_UNKNOWN;
}
if (iface_attr->dev_num_paths > UINT8_MAX) {
ucs_error("only up to %d paths are supported by address pack (got: %u)",
UINT8_MAX, iface_attr->dev_num_paths);
ucs_free(devices);
return UCS_ERR_UNSUPPORTED;
}
dev->rsc_index = rsc_index;
UCS_STATIC_BITMAP_SET(&dev->tl_bitmap, rsc_index);
dev->num_paths = ucs_min(max_num_paths, iface_attr->dev_num_paths);
}
*devices_p = devices;
*num_devices_p = num_devices;
return UCS_OK;
}
static ssize_t
ucp_address_packed_size(ucp_worker_h worker,
const ucp_address_packed_device_t *devices,
ucp_rsc_index_t num_devices, uint64_t pack_flags,
ucp_object_version_t addr_version)
{
size_t size = 0;
size_t md_mask;
ssize_t value_size;
const ucp_address_packed_device_t *dev;
ucp_md_index_t md_index;
const ucp_tl_resource_desc_t *rsc;
/* header: version and flags */
if (addr_version == UCP_OBJECT_VERSION_V1) {
size += sizeof(uint8_t);
md_mask = UCP_ADDRESS_FLAG_MD_MASK_V1;
} else {
size += sizeof(uint16_t);
md_mask = UCP_ADDRESS_FLAG_MD_MASK;
}
if (pack_flags & UCP_ADDRESS_PACK_FLAG_WORKER_UUID) {
size += sizeof(uint64_t);
}
if (pack_flags & UCP_ADDRESS_PACK_FLAG_CLIENT_ID) {
size += sizeof(uint64_t);
}
if ((worker->context->config.ext.address_debug_info) &&
(pack_flags & UCP_ADDRESS_PACK_FLAG_WORKER_NAME)) {
size += strlen(ucp_worker_get_address_name(worker)) + 1;
}
if (num_devices == 0) {
size += 1; /* NULL md_index */
} else {
for (dev = devices; dev < (devices + num_devices); ++dev) {
rsc = &worker->context->tl_rscs[dev->rsc_index];
/* device md_index */
md_index = rsc->md_index;
/* md index (+flags) can take 2 bytes with address version 2 */
value_size = ucp_address_packed_value_size(md_index, md_mask,
addr_version,
rsc->tl_rsc.dev_name);
if (value_size < 0) {
return value_size;
}
size += value_size;
if (pack_flags & UCP_ADDRESS_PACK_FLAG_DEVICE_ADDR) {
/* device address length */
value_size = ucp_address_packed_value_size(
dev->dev_addr_len, UCP_ADDRESS_DEVICE_LEN_MASK,
addr_version, rsc->tl_rsc.dev_name);
if (value_size < 0) {
return value_size;
}
size += value_size;
size += dev->dev_addr_len; /* device address */
} else {
size += 1; /* 0 device address length */
}
if (dev->num_paths > 1) {
size += 1; /* number of paths */
}
if (dev->sys_dev != UCS_SYS_DEVICE_ID_UNKNOWN) {
size += 1; /* system device */
}
size += dev->tl_addrs_size; /* transport addresses */
}
if (ucp_address_pack_v1_extra_info(addr_version, pack_flags)) {
/* Pack empty device which contains wire version. This way it can be
* parsed by UCX versions starting from 1.16 and ignored by older
* ones. */
size += 2;
}
}
return size;
}
static void ucp_address_memcheck(ucp_context_h context, void *ptr, size_t size,
ucp_rsc_index_t rsc_index)
{
void *undef_ptr;
undef_ptr = (void*)VALGRIND_CHECK_MEM_IS_DEFINED(ptr, size);
if (undef_ptr != NULL) {
ucs_error(UCT_TL_RESOURCE_DESC_FMT
" address contains undefined bytes at offset %zd",
UCT_TL_RESOURCE_DESC_ARG(&context->tl_rscs[rsc_index].tl_rsc),
UCS_PTR_BYTE_DIFF(ptr, undef_ptr));
}
}
static void *ucp_address_pack_byte_extended(void *ptr, size_t value,
size_t max_value,
ucp_object_version_t addr_version)
{
if ((addr_version != UCP_OBJECT_VERSION_V1) && (value >= max_value)) {
/* Set maximal possible value, indicating that the actual value is in
* the next byte. */
*ucs_serialize_next(&ptr, uint8_t) = max_value;
max_value = UINT8_MAX;
}
ucs_assertv_always(value <= max_value, "value=%zu, max_value %zu", value,
max_value);
*ucs_serialize_next(&ptr, uint8_t) = value;
return ptr;
}
static void *
ucp_address_unpack_byte_extended(const void *ptr, size_t value_mask,
ucp_object_version_t addr_version,
uint8_t *value_p)
{
uint8_t value = *ucs_serialize_next(&ptr, const uint8_t) & value_mask;
if ((addr_version != UCP_OBJECT_VERSION_V1) && (value == value_mask)) {
value = *ucs_serialize_next(&ptr, const uint8_t);
}
*value_p = value;
return (void*)ptr;
}
static size_t ucp_address_md_mask(ucp_object_version_t addr_version)
{
return (addr_version == UCP_OBJECT_VERSION_V1) ?
UCP_ADDRESS_FLAG_MD_MASK_V1 : UCP_ADDRESS_FLAG_MD_MASK;
}
static void *
ucp_address_pack_md_info(void *ptr, int is_empty_dev, uint64_t md_flags,
ucp_md_index_t md_index,
ucp_object_version_t addr_version)
{
uint8_t *flags_ptr = ptr;
size_t mask = ucp_address_md_mask(addr_version);
ptr = ucp_address_pack_byte_extended(ptr, md_index, mask, addr_version);
if (is_empty_dev) {
*flags_ptr |= UCP_ADDRESS_FLAG_MD_EMPTY_DEV;
}
if (addr_version == UCP_OBJECT_VERSION_V1) {
/* Preserve wire protocol even though these flags are not used */
if (md_flags & UCT_MD_FLAG_ALLOC) {
*flags_ptr |= UCP_ADDRESS_FLAG_MD_ALLOC;
}
if (md_flags & UCT_MD_FLAG_REG) {
*flags_ptr |= UCP_ADDRESS_FLAG_MD_REG;
}
}
return ptr;
}
static void *ucp_address_unpack_md_info(const void *ptr,
ucp_object_version_t addr_version,
ucp_md_index_t *md_index,
int *empty_dev)
{
uint8_t md_byte = *(uint8_t*)ptr;
size_t mask;
*empty_dev = md_byte & UCP_ADDRESS_FLAG_MD_EMPTY_DEV;
mask = ucp_address_md_mask(addr_version);
return ucp_address_unpack_byte_extended(ptr, mask, addr_version, md_index);
}
static uint32_t ucp_address_pack_flags(uint64_t input_flags,
uint64_t cap_mask,
uint8_t output_start_bit)
{
uint32_t result_flags = 0;
uint32_t packed_flag;
uint8_t cap_index;
ucs_assert((ucs_popcount(cap_mask) + output_start_bit) < 32);
packed_flag = UCS_BIT(output_start_bit);
ucs_for_each_bit(cap_index, cap_mask) {
if (input_flags & UCS_BIT(cap_index)) {
result_flags |= packed_flag;
}
packed_flag <<= 1;
}
return result_flags;
}
static uint64_t ucp_address_unpack_flags(uint32_t input_flags,
uint64_t cap_mask,
uint8_t input_start_bit)
{
uint64_t result_flags = 0;
uint32_t packed_flag;
uint8_t cap_index;
ucs_assert((ucs_popcount(cap_mask) + input_start_bit) < 32);
packed_flag = UCS_BIT(input_start_bit);
ucs_for_each_bit(cap_index, cap_mask) {
if (input_flags & packed_flag) {
result_flags |= UCS_BIT(cap_index);
}
packed_flag <<= 1;
}
return result_flags;
}
static uint64_t ucp_address_flags_from_iface_flags(uint64_t iface_cap_flags,
uint64_t iface_event_flags)
{
uint64_t iface_flags = 0;
if (iface_cap_flags & UCT_IFACE_FLAG_CONNECT_TO_IFACE) {
iface_flags |= UCP_ADDR_IFACE_FLAG_CONNECT_TO_IFACE;
}
if (iface_cap_flags & UCT_IFACE_FLAG_CB_ASYNC) {
iface_flags |= UCP_ADDR_IFACE_FLAG_CB_ASYNC;
}
if (ucs_test_all_flags(iface_cap_flags,
UCT_IFACE_FLAG_CB_SYNC | UCT_IFACE_FLAG_AM_BCOPY)) {
iface_flags |= UCP_ADDR_IFACE_FLAG_AM_SYNC;
}
if (iface_cap_flags & (UCT_IFACE_FLAG_PUT_SHORT | UCT_IFACE_FLAG_PUT_BCOPY |
UCT_IFACE_FLAG_PUT_ZCOPY)) {
iface_flags |= UCP_ADDR_IFACE_FLAG_PUT;
}
if (iface_cap_flags & (UCT_IFACE_FLAG_GET_SHORT | UCT_IFACE_FLAG_GET_BCOPY |
UCT_IFACE_FLAG_GET_ZCOPY)) {
iface_flags |= UCP_ADDR_IFACE_FLAG_GET;
}
if (iface_cap_flags & (UCT_IFACE_FLAG_TAG_EAGER_SHORT |
UCT_IFACE_FLAG_TAG_EAGER_BCOPY |
UCT_IFACE_FLAG_TAG_EAGER_ZCOPY)) {
iface_flags |= UCP_ADDR_IFACE_FLAG_TAG_EAGER;
}
if (iface_cap_flags & UCT_IFACE_FLAG_TAG_RNDV_ZCOPY) {
iface_flags |= UCP_ADDR_IFACE_FLAG_TAG_RNDV;
}
if (iface_event_flags & UCT_IFACE_FLAG_EVENT_RECV) {
iface_flags |= UCP_ADDR_IFACE_FLAG_EVENT_RECV;
}
return iface_flags;
}
static unsigned
ucp_address_pack_iface_attr_v1(const ucp_worker_iface_t *wiface, void *ptr,
unsigned atomic_flags)
{
const uct_iface_attr_t *iface_attr = &wiface->attr;
ucp_address_packed_iface_attr_t *packed = ptr;
packed->lat_ovh = ucp_wireup_iface_lat_distance_v1(wiface);
packed->bandwidth = ucp_wireup_iface_bw_distance(wiface);
packed->overhead = iface_attr->overhead;
/* Pack prio, capability and atomic flags */
packed->prio_cap_flags = (uint8_t)iface_attr->priority |
ucp_address_pack_flags(iface_attr->cap.flags,
UCP_ADDRESS_IFACE_FLAGS, 8);
/* Keep only the bits defined by UCP_ADDRESS_IFACE_EVENT_FLAGS to shrink
* address. */
packed->prio_cap_flags |= ucp_address_pack_flags(
iface_attr->cap.event_flags, UCP_ADDRESS_IFACE_EVENT_FLAGS,
8 + ucs_popcount(UCP_ADDRESS_IFACE_FLAGS));
if (atomic_flags & UCP_ADDR_IFACE_FLAG_ATOMIC32) {
packed->prio_cap_flags |= UCP_ADDRESS_V1_FLAG_ATOMIC32;
}
if (atomic_flags & UCP_ADDR_IFACE_FLAG_ATOMIC64) {
packed->prio_cap_flags |= UCP_ADDRESS_V1_FLAG_ATOMIC64;
}
ucs_assert_always((ucs_popcount(UCP_ADDRESS_IFACE_FLAGS) +
ucs_popcount(UCP_ADDRESS_IFACE_EVENT_FLAGS)) <= 22);
return sizeof(*packed);
}
size_t ucp_address_iface_seg_size(const uct_iface_attr_t *iface_attr)
{
/* To be replaced by iface_attr.cap.am.max_recv when it is added to the
* UCT API */
if (iface_attr->cap.flags & UCT_IFACE_FLAG_AM_BCOPY) {
return iface_attr->cap.am.max_bcopy;
} else if (iface_attr->cap.flags & UCT_IFACE_FLAG_AM_ZCOPY) {
return iface_attr->cap.am.max_zcopy;
} else if (iface_attr->cap.flags & UCT_IFACE_FLAG_AM_SHORT) {
return iface_attr->cap.am.max_short;
} else {
return 0ul;
}
}
static unsigned
ucp_address_pack_iface_attr_v2(const ucp_worker_iface_t *wiface, void *ptr,
unsigned atomic_flags)
{
const uct_iface_attr_t *iface_attr = &wiface->attr;
ucp_address_v2_packed_iface_attr_t *packed = ptr;
uint64_t addr_iface_flags;
double latency_nsec, overhead_nsec, latency, bandwidth;
size_t seg_size;
latency = ucp_wireup_iface_lat_distance_v2(wiface);
bandwidth = ucp_wireup_iface_bw_distance(wiface);
latency_nsec = latency * UCS_NSEC_PER_SEC;
overhead_nsec = iface_attr->overhead * UCS_NSEC_PER_SEC;
packed->overhead = UCS_FP8_PACK(OVERHEAD, overhead_nsec);
packed->bandwidth = UCS_FP8_PACK(BANDWIDTH, bandwidth);
packed->latency = UCS_FP8_PACK(LATENCY, latency_nsec);
packed->prio = ucs_min(UINT8_MAX, iface_attr->priority);
addr_iface_flags = ucp_address_flags_from_iface_flags(
iface_attr->cap.flags, iface_attr->cap.event_flags);
packed->flags = (uint16_t)(addr_iface_flags | atomic_flags);
seg_size = ucp_address_iface_seg_size(iface_attr) /
UCP_ADDRESS_IFACE_SEG_SIZE_FACTOR;
packed->seg_size = (uint16_t)seg_size;
ucs_assertv(seg_size <= UINT16_MAX, "seg_size %zu", seg_size);
return sizeof(*packed);
}
static int ucp_address_pack_iface_attr(const ucp_worker_iface_t *wiface,
void *ptr, ucp_rsc_index_t rsc_index,
unsigned pack_flags,
ucp_object_version_t addr_version,
int enable_atomics)
{
const uct_iface_attr_t *iface_attr = &wiface->attr;
ucp_worker_h worker = wiface->worker;
unsigned atomic_flags = 0;
unsigned packed_len;
double lat_ovh;
ucp_address_unified_iface_attr_t *unified;
if (ucp_worker_is_unified_mode(worker)) {
/* In unified mode all workers have the same transports and tl bitmap.
* Just send rsc index, so the remote peer could fetch iface attributes
* from its local iface. Also send latency overhead, because it
* depends on device NUMA locality. */
unified = ptr;
unified->rsc_index = rsc_index;
lat_ovh = ucp_wireup_iface_lat_distance_v1(wiface);
if (enable_atomics) {
lat_ovh = -lat_ovh;
}
unified->lat_ovh = lat_ovh;
return sizeof(*unified);
}
if (enable_atomics) {
if (ucs_test_all_flags(iface_attr->cap.atomic32.op_flags,
UCP_ATOMIC_OP_MASK) &&
ucs_test_all_flags(iface_attr->cap.atomic32.fop_flags,
UCP_ATOMIC_FOP_MASK)) {
atomic_flags |= UCP_ADDR_IFACE_FLAG_ATOMIC32;
}
if (ucs_test_all_flags(iface_attr->cap.atomic64.op_flags,
UCP_ATOMIC_OP_MASK) &&
ucs_test_all_flags(iface_attr->cap.atomic64.fop_flags,
UCP_ATOMIC_FOP_MASK)) {
atomic_flags |= UCP_ADDR_IFACE_FLAG_ATOMIC64;
}
}
if (addr_version == UCP_OBJECT_VERSION_V1) {
packed_len = ucp_address_pack_iface_attr_v1(wiface, ptr, atomic_flags);
} else {
packed_len = ucp_address_pack_iface_attr_v2(wiface, ptr, atomic_flags);
}
if (pack_flags & UCP_ADDRESS_PACK_FLAG_TL_RSC_IDX) {
ptr = UCS_PTR_BYTE_OFFSET(ptr, packed_len);
*(uint8_t*)ptr = rsc_index;
packed_len += sizeof(uint8_t);
}
return packed_len;
}
static unsigned
ucp_address_unpack_iface_attr_v1(ucp_worker_t *worker,
ucp_address_iface_attr_t *iface_attr,
const void *ptr)
{
const ucp_address_packed_iface_attr_t *packed = ptr;
uct_ppn_bandwidth_t bandwidth;
uint64_t iface_flags, event_flags;
iface_attr->overhead = packed->overhead;
iface_attr->lat_ovh = packed->lat_ovh;
iface_attr->priority = packed->prio_cap_flags & UCS_MASK(8);
/* UCP address v1 does not carry segment size, MAX will not affect ep
* threshold calculations (which are trimmed by this value). */
iface_attr->seg_size = UINT_MAX;
iface_flags = ucp_address_unpack_flags(packed->prio_cap_flags,
UCP_ADDRESS_IFACE_FLAGS,
8);
event_flags = ucp_address_unpack_flags(
packed->prio_cap_flags,
UCP_ADDRESS_IFACE_EVENT_FLAGS,
8 + ucs_popcount(UCP_ADDRESS_IFACE_FLAGS));
iface_attr->flags = ucp_address_flags_from_iface_flags(iface_flags,
event_flags);
if (packed->prio_cap_flags & UCP_ADDRESS_V1_FLAG_ATOMIC32) {
iface_attr->flags |= UCP_ADDR_IFACE_FLAG_ATOMIC32;
}
if (packed->prio_cap_flags & UCP_ADDRESS_V1_FLAG_ATOMIC64) {
iface_attr->flags |= UCP_ADDR_IFACE_FLAG_ATOMIC64;
}
if (packed->bandwidth < 0.0) {
/* The received value of the bandwidth is "dedicated - shared" which
* doesn't consider ppn and could be sent only by the peer which uses
* UCX version <= 1.11. Calculate the bandwidth value considering our
* ppn value to be the same value as on the peer */
bandwidth.shared = fabs(packed->bandwidth);
bandwidth.dedicated = 0.0;
iface_attr->bandwidth = ucp_tl_iface_bandwidth(worker->context,
&bandwidth);
} else {
/* The received value is either a dedicated bandwidth value (when the
* peer is using an older version) or the total bandwidth considering
* remote ppn value (when the peer is using a newer version) */
iface_attr->bandwidth = packed->bandwidth;
}
return sizeof(*packed);
}
static unsigned
ucp_address_unpack_iface_attr_v2(ucp_worker_t *worker,
ucp_address_iface_attr_t *iface_attr,
const void *ptr)
{
const ucp_address_v2_packed_iface_attr_t *packed = ptr;
iface_attr->priority = packed->prio;
iface_attr->seg_size = packed->seg_size *
UCP_ADDRESS_IFACE_SEG_SIZE_FACTOR;
iface_attr->overhead = UCS_FP8_UNPACK(OVERHEAD, packed->overhead) /
UCS_NSEC_PER_SEC;
iface_attr->lat_ovh = UCS_FP8_UNPACK(LATENCY, packed->latency) /
UCS_NSEC_PER_SEC;
iface_attr->bandwidth = UCS_FP8_UNPACK(BANDWIDTH, packed->bandwidth);
iface_attr->flags = packed->flags;
return sizeof(*packed);
}
static ucs_status_t
ucp_address_unpack_iface_attr(ucp_worker_t *worker,
ucp_address_iface_attr_t *iface_attr,
const void *ptr, unsigned unpack_flags,
ucp_object_version_t addr_version, size_t *size_p)
{
const ucp_address_unified_iface_attr_t *unified;
ucp_worker_iface_t *wiface;
ucp_rsc_index_t rsc_idx;
int iface_attr_len;
if (ucp_worker_is_unified_mode(worker)) {
/* Address contains resources index and iface latency overhead
* (not all iface attrs). */
unified = ptr;
rsc_idx = unified->rsc_index & UCP_ADDRESS_IFACE_LEN_MASK;
iface_attr->lat_ovh = fabs(unified->lat_ovh);
if (!UCS_STATIC_BITMAP_GET(worker->context->tl_bitmap, rsc_idx)) {
ucp_address_error(
unpack_flags,
"failed to unpack address, resource[%d] is not valid",
rsc_idx);
return UCS_ERR_INVALID_ADDR;
}
/* Just take the rest of iface attrs from the local resource. */
wiface = ucp_worker_iface(worker, rsc_idx);
iface_attr->flags = ucp_address_flags_from_iface_flags(
wiface->attr.cap.flags,
wiface->attr.cap.event_flags);
iface_attr->priority = wiface->attr.priority;
iface_attr->overhead = wiface->attr.overhead;
iface_attr->bandwidth =
ucp_tl_iface_bandwidth(worker->context,
&wiface->attr.bandwidth);
iface_attr->seg_size = wiface->attr.cap.am.max_bcopy;
if (signbit(unified->lat_ovh)) {
iface_attr->atomic.atomic32.op_flags = wiface->attr.cap.atomic32.op_flags;
iface_attr->atomic.atomic32.fop_flags = wiface->attr.cap.atomic32.fop_flags;
iface_attr->atomic.atomic64.op_flags = wiface->attr.cap.atomic64.op_flags;
iface_attr->atomic.atomic64.fop_flags = wiface->attr.cap.atomic64.fop_flags;
}
*size_p = sizeof(*unified);
return UCS_OK;
}
if (addr_version == UCP_OBJECT_VERSION_V1) {
iface_attr_len = ucp_address_unpack_iface_attr_v1(worker, iface_attr,
ptr);