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brpc_ps_client.cc
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brpc_ps_client.cc
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// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "paddle/fluid/distributed/ps/service/brpc_ps_client.h"
#include <memory>
#include <sstream>
#include <string>
#include "paddle/fluid/framework/archive.h"
static const int max_port = 65535;
DEFINE_int32(pserver_push_dense_merge_limit, 12,
"limit max push_dense local merge requests");
DEFINE_int32(pserver_push_sparse_merge_limit, 12,
"limit max push_sparse local merge requests");
DEFINE_int32(pserver_pull_dense_limit, 12,
"limit max push_sparse local merge requests");
DEFINE_int32(pserver_async_push_dense_interval_ms, 10,
"async push_dense to server interval");
DEFINE_int32(pserver_async_push_sparse_interval_ms, 10,
"async push_sparse to server interval");
DEFINE_bool(pserver_scale_gradient_by_merge, false,
"scale dense gradient when merged");
DEFINE_int32(pserver_communicate_compress_type, 0,
"none:0 snappy:1 gzip:2 zlib:3 lz4:4");
DEFINE_int32(pserver_max_async_call_num, 13,
"max task num in async_call_server");
DEFINE_int32(pserver_timeout_ms, 500000, "pserver request server timeout_ms");
DEFINE_int32(pserver_connect_timeout_ms, 10000,
"pserver connect server timeout_ms");
DEFINE_int32(pserver_sparse_merge_thread, 1, "pserver sparse merge thread num");
DEFINE_int32(pserver_sparse_table_shard_num, 1000,
"sparse table shard for save & load");
namespace paddle {
namespace framework {
class Scope;
class Variable;
} // namespace framework
} // namespace paddle
namespace paddle {
namespace distributed {
inline size_t get_sparse_shard(uint32_t shard_num, uint32_t server_num,
uint64_t key) {
size_t remind = shard_num % server_num;
size_t local_shard_num =
remind == 0 ? shard_num / server_num : shard_num / server_num + 1;
return (key % shard_num) / local_shard_num;
}
void DownpourPsClientService::service(
::google::protobuf::RpcController *controller,
const PsRequestMessage *request, PsResponseMessage *response,
::google::protobuf::Closure *done) {
brpc::ClosureGuard done_guard(done);
int ret = _client->HandleClient2ClientMsg(
request->cmd_id(), request->client_id(), request->data());
response->set_err_code(0);
response->set_err_msg("");
if (ret != 0) {
response->set_err_code(-1);
response->set_err_msg("handle_client2client_msg failed");
}
}
// 启动client端RpcService 用于数据互发等操作
int32_t BrpcPsClient::StartClientService() {
if (_service.Configure(this, _client_id) != 0) {
LOG(ERROR)
<< "service initialize failed, service_name:DownpourPsClientService";
return -1;
}
_server.AddService(&_service, brpc::SERVER_DOESNT_OWN_SERVICE);
brpc::ServerOptions options;
int start_port = 8500;
options.num_threads = 24;
if (_server.Start(butil::my_ip_cstr(), brpc::PortRange(start_port, max_port),
&options) != 0) {
LOG(ERROR) << "BrpcPsServer start failed";
return -1;
}
_server_started = true;
_env->RegistePsClient(butil::my_ip_cstr(), _server.listen_address().port,
_client_id);
return 0;
}
int32_t BrpcPsClient::CreateClient2ClientConnection(
int pserver_timeout_ms, int pserver_connect_timeout_ms, int max_retry) {
brpc::ChannelOptions options;
options.protocol = "baidu_std";
options.timeout_ms = pserver_timeout_ms;
options.connection_type = "pooled";
options.connect_timeout_ms = pserver_connect_timeout_ms;
options.max_retry = max_retry;
std::vector<PSHost> client_list = _env->GetPsClients();
VLOG(1) << "BrpcPsClient::create_c2c_connection client_list size: "
<< client_list.size();
for (auto cc : client_list) {
VLOG(1) << "BrpcPsClient::create_c2c_connection client_list: "
<< cc.ToString();
}
_client_channels.resize(client_list.size());
std::ostringstream os;
std::string server_ip_port;
for (size_t i = 0; i < client_list.size(); ++i) {
server_ip_port.assign(client_list[i].ip.c_str());
server_ip_port.append(":");
server_ip_port.append(std::to_string(client_list[i].port));
_client_channels[i].reset(new brpc::Channel());
if (_client_channels[i]->Init(server_ip_port.c_str(), "", &options)) {
VLOG(0) << "BrpcPSClient connect to Client:" << server_ip_port
<< " Failed! Try again.";
std::string int_ip_port =
GetIntTypeEndpoint(client_list[i].ip, client_list[i].port);
if (_client_channels[i]->Init(int_ip_port.c_str(), "", &options) != 0) {
LOG(ERROR) << "BrpcPSClient connect to Client:" << int_ip_port
<< " Failed!";
return -1;
}
}
os << server_ip_port << ",";
}
LOG(INFO) << "Client connect success:" << os.str();
return 0;
}
int32_t BrpcPsClient::Initialize() {
_async_call_num = 0;
brpc::ChannelOptions options;
options.protocol = "baidu_std";
options.timeout_ms = FLAGS_pserver_timeout_ms;
options.connection_type = "pooled";
options.connect_timeout_ms = FLAGS_pserver_connect_timeout_ms;
options.max_retry = 3;
std::ostringstream os;
std::string server_ip_port;
std::string client_ip(butil::my_ip_cstr());
// 获取server列表，并连接
std::vector<PSHost> server_list = _env->GetPsServers();
_server_channels.resize(server_list.size());
for (size_t i = 0; i < server_list.size(); ++i) {
server_ip_port.assign(server_list[i].ip.c_str());
server_ip_port.append(":");
server_ip_port.append(std::to_string(server_list[i].port));
for (size_t j = 0; j < _server_channels[i].size(); ++j) {
_server_channels[i][j].reset(new brpc::Channel());
if (_server_channels[i][j]->Init(server_ip_port.c_str(), "", &options) !=
0) {
VLOG(0) << "BrpcPSclient connect to Server:" << server_ip_port
<< " Failed! Try again.";
std::string int_ip_port =
GetIntTypeEndpoint(server_list[i].ip, server_list[i].port);
if (_server_channels[i][j]->Init(int_ip_port.c_str(), "", &options) !=
0) {
LOG(ERROR) << "BrpcPSclient connect to Server:" << int_ip_port
<< " Failed!";
return -1;
}
}
}
os << server_ip_port << ",";
}
// 启动client探听接口, 并相互建立连接
StartClientService();
// 异步push 请求队列初始化
const auto &worker_param = _config.worker_param().downpour_worker_param();
for (int i = 0; i < worker_param.downpour_table_param_size(); ++i) {
auto type = worker_param.downpour_table_param(i).type();
auto table_id = worker_param.downpour_table_param(i).table_id();
if (type == PS_DENSE_TABLE) {
_push_dense_task_queue_map[table_id] =
paddle::framework::MakeChannel<DenseAsyncTask *>();
}
if (type == PS_SPARSE_TABLE) {
_push_sparse_task_queue_map[table_id] =
paddle::framework::MakeChannel<SparseAsyncTask *>();
_push_sparse_merge_count_map[table_id] = 0;
}
}
auto &profiler = CostProfiler::instance();
profiler.register_profiler("pserver_client_pull_dense");
profiler.register_profiler("pserver_client_pull_sparse");
profiler.register_profiler("pserver_client_pull_sparse_param");
profiler.register_profiler("pserver_client_pull_sparse_local");
profiler.register_profiler("pserver_client_push_sparse");
profiler.register_profiler("pserver_client_push_sparse_parse");
profiler.register_profiler("client_push_sparse_put");
profiler.register_profiler("pserver_client_push_sparse");
profiler.register_profiler("pserver_client_push_sparse_merge");
profiler.register_profiler("pserver_client_push_sparse_rpc");
profiler.register_profiler("pserver_client_push_dense");
profiler.register_profiler("pserver_client_push_dense_parse");
profiler.register_profiler("push_dense_put");
profiler.register_profiler("pserver_client_push_dense_merge");
profiler.register_profiler("pserver_client_push_dense_rpc");
profiler.register_profiler("pserver_client_push_dense_send");
_running = true;
_flushing = false;
// 启动异步push线程
_async_push_sparse_thread =
std::thread(std::bind(&BrpcPsClient::PushSparseTaskConsume, this));
// _async_push_sparse_thread.detach();
_async_push_dense_thread =
std::thread(std::bind(&BrpcPsClient::PushDenseTaskConsume, this));
// for debug
// _print_thread =
// std::thread(std::bind(&BrpcPsClient::PrintQueueSizeThread, this));
return 0;
}
int DownpourBrpcClosure::check_response(size_t request_idx, int cmd_id) {
if (_cntls[request_idx]->Failed()) {
LOG(ERROR) << "resquest cmd_id:" << cmd_id
<< " failed, "
"err:"
<< _cntls[request_idx]->ErrorText();
return -1;
}
if (_responses[request_idx].err_code() != 0) {
LOG(ERROR) << "response ret bad, server_idx:" << request_idx
<< "cmd_id:" << cmd_id
<< " err_code:" << _responses[request_idx].err_code()
<< " err_msg:" << _responses[request_idx].err_msg();
return -1;
}
return 0;
}
int DownpourBrpcClosure::check_save_response(size_t request_idx, int cmd_id) {
int32_t feasign_size = 0;
if (_cntls[request_idx]->Failed()) {
LOG(ERROR) << "resquest cmd_id:" << cmd_id
<< " failed, "
"err:"
<< _cntls[request_idx]->ErrorText();
return -1;
}
feasign_size = _responses[request_idx].err_code();
if (feasign_size < 0) {
LOG(ERROR) << "response ret bad, server_idx:" << request_idx
<< "cmd_id:" << cmd_id
<< " err_code:" << _responses[request_idx].err_code()
<< " err_msg:" << _responses[request_idx].err_msg();
return -1;
}
return feasign_size;
}
std::string DownpourBrpcClosure::get_response(size_t request_idx, int cmd_id) {
std::string data = _responses[request_idx].data();
return data;
}
std::future<int32_t> BrpcPsClient::PrintTableStat(uint32_t table_id) {
size_t request_call_num = _server_channels.size();
DownpourBrpcClosure *closure = new DownpourBrpcClosure(
request_call_num, [request_call_num, table_id](void *done) {
int ret = 0;
uint64_t feasign_size = 0;
uint64_t mf_size = 0;
paddle::framework::BinaryArchive ar;
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
for (size_t i = 0; i < request_call_num; ++i) {
if (closure->check_response(i, PS_PRINT_TABLE_STAT) != 0) {
ret = -1;
break;
}
std::string resp = closure->get_response(i, PS_PRINT_TABLE_STAT);
ar.SetReadBuffer(const_cast<char *>(resp.c_str()), resp.length(),
nullptr);
feasign_size += ar.Get<uint64_t>();
mf_size += ar.Get<uint64_t>();
}
closure->set_promise_value(ret);
std::cout << "table id: " << table_id
<< ", feasign size: " << feasign_size
<< ", mf size: " << mf_size << std::endl;
});
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(PS_PRINT_TABLE_STAT);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
PsService_Stub rpc_stub(GetCmdChannel(i));
closure->cntl(i)->set_timeout_ms(
10800000); // cmd msg don't limit timeout for save/load
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::SendCmd(
uint32_t table_id, int cmd_id, const std::vector<std::string> ¶ms) {
size_t request_call_num = _server_channels.size();
DownpourBrpcClosure *closure = new DownpourBrpcClosure(
request_call_num, [request_call_num, cmd_id](void *done) {
int ret = 0;
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
for (size_t i = 0; i < request_call_num; ++i) {
if (closure->check_response(i, cmd_id) != 0) {
ret = -1;
break;
}
}
closure->set_promise_value(ret);
});
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(cmd_id);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
for (const auto ¶m : params) {
closure->request(i)->add_params(param);
}
PsService_Stub rpc_stub(GetCmdChannel(i));
closure->cntl(i)->set_timeout_ms(
10800000 * 2); // cmd msg don't limit timeout for save/load
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::SendSaveCmd(
uint32_t table_id, int cmd_id, const std::vector<std::string> ¶ms) {
size_t request_call_num = _server_channels.size();
DownpourBrpcClosure *closure = new DownpourBrpcClosure(
request_call_num, [request_call_num, cmd_id](void *done) {
int ret = 0;
uint32_t feasign_size = 0;
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
for (size_t i = 0; i < request_call_num; ++i) {
if (closure->check_save_response(i, cmd_id) < 0) {
ret = -1;
break;
}
feasign_size += closure->check_save_response(i, cmd_id);
}
if (ret == 0) {
closure->set_promise_value(feasign_size);
} else {
closure->set_promise_value(ret);
}
});
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(cmd_id);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
for (const auto ¶m : params) {
closure->request(i)->add_params(param);
}
PsService_Stub rpc_stub(GetCmdChannel(i));
closure->cntl(i)->set_timeout_ms(
10800000); // cmd msg don't limit timeout for save/load
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::Shrink(uint32_t table_id,
const std::string threshold) {
return SendCmd(table_id, PS_SHRINK_TABLE, {threshold});
}
std::future<int32_t> BrpcPsClient::Load(const std::string &epoch,
const std::string &mode) {
return SendCmd(-1, PS_LOAD_ALL_TABLE, {epoch, mode});
}
std::future<int32_t> BrpcPsClient::Load(uint32_t table_id,
const std::string &epoch,
const std::string &mode) {
return SendCmd(table_id, PS_LOAD_ONE_TABLE, {epoch, mode});
}
std::future<int32_t> BrpcPsClient::Save(const std::string &epoch,
const std::string &mode) {
VLOG(1) << "BrpcPsClient::save path " << epoch;
return SendSaveCmd(-1, PS_SAVE_ALL_TABLE, {epoch, mode});
}
std::future<int32_t> BrpcPsClient::Save(uint32_t table_id,
const std::string &epoch,
const std::string &mode) {
VLOG(1) << "BrpcPsClient::save one table path " << epoch << " table_id "
<< table_id;
return SendSaveCmd(table_id, PS_SAVE_ONE_TABLE, {epoch, mode});
}
std::future<int32_t> BrpcPsClient::CacheShuffle(
uint32_t table_id, const std::string &path, const std::string &mode,
const std::string &cache_threshold) {
VLOG(1) << "BrpcPsClient send cmd for cache shuffle";
return SendSaveCmd(table_id, PS_CACHE_SHUFFLE, {path, mode, cache_threshold});
}
std::future<int32_t> BrpcPsClient::CacheShuffleMultiTable(
std::vector<int> tables, const std::string &path, const std::string &mode,
const std::string &cache_threshold) {
VLOG(1) << "BrpcPsClient send cmd for cache shuffle multi table one path";
std::vector<std::string> param;
param.push_back(path);
param.push_back(mode);
param.push_back(cache_threshold);
for (size_t i = 0; i < tables.size(); i++) {
param.push_back(std::to_string(tables[i]));
}
return SendSaveCmd(0, PS_CACHE_SHUFFLE, param);
}
std::future<int32_t> BrpcPsClient::SaveCache(uint32_t table_id,
const std::string &path,
const std::string &mode) {
return SendSaveCmd(table_id, PS_SAVE_ONE_CACHE_TABLE, {path, mode});
}
std::future<int32_t> BrpcPsClient::GetCacheThreshold(uint32_t table_id,
double &cache_threshold) {
int cmd_id = PS_GET_CACHE_THRESHOLD;
size_t request_call_num = _server_channels.size();
DownpourBrpcClosure *closure = new DownpourBrpcClosure(
request_call_num,
[request_call_num, cmd_id, &cache_threshold](void *done) {
int ret = 0;
auto *closure = (DownpourBrpcClosure *)done;
std::vector<double> cache_thresholds(request_call_num, 0);
for (size_t i = 0; i < request_call_num; ++i) {
if (closure->check_response(i, cmd_id) != 0) {
ret = -1;
break;
}
std::string cur_res = closure->get_response(i, cmd_id);
cache_thresholds[i] = std::stod(cur_res);
}
double sum_threshold = 0.0;
int count = 0;
for (auto t : cache_thresholds) {
if (t >= 0) {
sum_threshold += t;
++count;
}
}
if (count == 0) {
cache_threshold = 0;
} else {
cache_threshold = sum_threshold / count;
}
VLOG(1) << "client get cache threshold: " << cache_threshold;
closure->set_promise_value(ret);
});
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(cmd_id);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
PsService_Stub rpc_stub(GetCmdChannel(i));
closure->cntl(i)->set_timeout_ms(10800000);
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::Clear() {
return SendCmd(-1, PS_CLEAR_ALL_TABLE, {});
}
std::future<int32_t> BrpcPsClient::Clear(uint32_t table_id) {
return SendCmd(table_id, PS_CLEAR_ONE_TABLE, {});
}
std::future<int32_t> BrpcPsClient::Flush() {
VLOG(0) << "BrpcPsClient::flush begin";
_flushing = true;
std::promise<int> promise;
std::future<int32_t> fut = promise.get_future();
do {
VLOG(3) << "wait _async_call_num:" << _async_call_num;
usleep(100000); // sleep 100ms wait async end
} while (_async_call_num > 0);
VLOG(1) << "flush _async_call_num = 0";
promise.set_value(0);
_flushing = false;
VLOG(0) << "BrpcPsClient::flush done";
PrintQueueSize();
return fut;
}
void BrpcPsClient::PrintQueueSize() {
for (auto &push_sparse_task_itr : _push_sparse_task_queue_map) {
auto table_id = push_sparse_task_itr.first;
auto queue_size = push_sparse_task_itr.second->Size();
VLOG(0) << "BrpcPsClient::PrintQueueSize: table " << table_id
<< " size: " << queue_size;
}
for (auto &task_queue_itr : _push_dense_task_queue_map) {
auto table_id = task_queue_itr.first;
auto queue_size = task_queue_itr.second->Size();
VLOG(0) << "BrpcPsClient::PrintQueueSize: table " << table_id
<< " size: " << queue_size;
}
}
void BrpcPsClient::PrintQueueSizeThread() {
while (_running) {
usleep(1000000 * 60 * 2);
PrintQueueSize();
}
}
void BrpcPsClient::FinalizeWorker() {
Flush();
VLOG(0) << "BrpcPsClient::FinalizeWorker begin join thread";
_running = false;
_async_push_dense_thread.join();
_async_push_sparse_thread.join();
// _print_thread.join();
VLOG(0) << "BrpcPsClient::FinalizeWorker begin join server";
_server.Stop(1000);
_server.Join();
_server_started = false;
VLOG(0) << "BrpcPsClient::FinalizeWorker done";
}
std::future<int32_t> BrpcPsClient::StopServer() {
return SendCmd(-1, PS_STOP_SERVER, {});
}
std::future<int32_t> BrpcPsClient::StartProfiler() {
return SendCmd(-1, PS_START_PROFILER, {});
}
std::future<int32_t> BrpcPsClient::StopProfiler() {
return SendCmd(-1, PS_STOP_PROFILER, {});
}
std::future<int32_t> BrpcPsClient::Barrier(size_t table_id,
uint32_t barrier_type) {
return SendCmd(table_id, PS_BARRIER, {std::to_string(barrier_type)});
}
std::future<int32_t> BrpcPsClient::PullGeoParam(size_t table_id,
std::vector<float> *values,
std::vector<uint64_t> *keys,
int pserver_idx) {
auto *accessor = GetTableAccessor(table_id);
DownpourBrpcClosure *closure =
new DownpourBrpcClosure(1, [keys, values, accessor](void *done) {
int ret = 0;
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
uint32_t shard_nums;
if (closure->check_response(0, PS_PULL_GEO_PARAM) != 0) {
ret = -1;
}
auto &res_io_buffer = closure->cntl(0)->response_attachment();
butil::IOBufBytesIterator io_buffer_itr(res_io_buffer);
io_buffer_itr.copy_and_forward(reinterpret_cast<void *>(&shard_nums),
sizeof(uint32_t));
keys->resize(shard_nums);
values->resize(shard_nums * accessor->GetAccessorInfo().update_dim);
io_buffer_itr.copy_and_forward((void *)(keys->data()), // NOLINT
sizeof(uint64_t) * shard_nums);
io_buffer_itr.copy_and_forward(
(void *)(values->data()), // NOLINT
shard_nums * accessor->GetAccessorInfo().update_size);
closure->set_promise_value(ret);
});
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
closure->request(0)->set_cmd_id(PS_PULL_GEO_PARAM);
closure->request(0)->set_table_id(table_id);
closure->request(0)->set_client_id(_client_id);
PsService_Stub rpc_stub(GetCmdChannel(pserver_idx));
closure->cntl(0)->set_log_id(butil::gettimeofday_ms());
rpc_stub.service(closure->cntl(0), closure->request(0), closure->response(0),
closure);
return fut;
}
// for GEO
std::future<int32_t> BrpcPsClient::PushSparseParam(size_t table_id,
const uint64_t *keys,
const float **update_values,
size_t num, void *done) {
auto *accessor = GetTableAccessor(table_id);
// 发送RPC请求
DownpourBrpcClosure *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
size_t request_call_num = _server_channels.size();
std::vector<std::vector<uint64_t>> ids;
std::vector<std::vector<const float *>> value_ptrs;
ids.resize(request_call_num);
value_ptrs.resize(request_call_num);
for (size_t i = 0; i < num; ++i) {
size_t pserver_idx = keys[i] % request_call_num;
ids[pserver_idx].push_back(keys[i]);
value_ptrs[pserver_idx].push_back(update_values[i]);
}
for (size_t shard_idx = 0; shard_idx < request_call_num; ++shard_idx) {
auto kvs = ids[shard_idx];
auto value_ptr = value_ptrs[shard_idx];
size_t kv_size = kvs.size();
uint32_t value_size = accessor->GetAccessorInfo().update_size;
// 发送RPC请求
auto *push_request = closure->request(shard_idx);
push_request->set_cmd_id(PS_PUSH_SPARSE_PARAM);
push_request->set_table_id(table_id);
push_request->set_client_id(_client_id);
push_request->add_params((char *)&kv_size, sizeof(uint32_t)); // NOLINT
auto *push_data = push_request->mutable_data();
push_data->resize(kv_size * (sizeof(uint64_t) + value_size));
char *push_data_ptr = const_cast<char *>(push_data->data());
memcpy(push_data_ptr, kvs.data(), kv_size * sizeof(uint64_t));
push_data_ptr += kv_size * sizeof(uint64_t);
for (size_t i = 0; i < kv_size; ++i) {
memcpy(push_data_ptr, value_ptr[i], value_size);
push_data_ptr += value_size;
}
PsService_Stub rpc_stub(GetSparseChannel(shard_idx));
closure->cntl(shard_idx)->set_request_compress_type(
(brpc::CompressType)FLAGS_pserver_communicate_compress_type);
rpc_stub.service(closure->cntl(shard_idx), closure->request(shard_idx),
closure->response(shard_idx), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::PullDense(Region *regions, size_t region_num,
size_t table_id) {
auto timer = std::make_shared<CostTimer>("pserver_client_pull_dense");
auto *accessor = GetTableAccessor(table_id);
auto fea_dim = accessor->GetAccessorInfo().fea_dim;
size_t request_call_num = _server_channels.size();
uint32_t num_per_shard = DenseDimPerShard(fea_dim, request_call_num);
// callback 将各shard结果，顺序填入region
DownpourBrpcClosure *closure = new DownpourBrpcClosure(
request_call_num, [request_call_num, num_per_shard, regions, region_num,
accessor](void *done) {
int ret = 0;
size_t region_idx = 0; // 当前填充的region偏移
size_t region_data_idx = 0; // 当前填充的region内data偏移
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
size_t shard_data_size =
num_per_shard * accessor->GetAccessorInfo().select_size;
for (size_t i = 0; i < request_call_num; ++i) {
if (closure->check_response(i, PS_PULL_DENSE_TABLE) != 0) {
ret = -1;
break;
}
auto &res_io_buffer = closure->cntl(i)->response_attachment();
butil::IOBufBytesIterator io_buffer_itr(res_io_buffer);
size_t shard_buffer_remain = res_io_buffer.size();
if (shard_buffer_remain != shard_data_size) {
LOG(ERROR) << "expect res_size:" << shard_data_size
<< ", but size:" << shard_buffer_remain
<< ", ignore this response";
ret = -1;
break;
}
while (shard_buffer_remain > 0 && region_idx < region_num) {
auto ®ion = regions[region_idx];
if (region.size - region_data_idx >= shard_buffer_remain) {
// region待填充空间 >= 分片buffer数据, 直接拷贝置入
io_buffer_itr.copy_and_forward(
reinterpret_cast<void *>(region.data + region_data_idx),
shard_buffer_remain);
region_data_idx += shard_buffer_remain;
shard_buffer_remain = 0;
} else if (region.size - region_data_idx == 0) {
// region填满，切换到下一个region
++region_idx;
region_data_idx = 0;
} else {
// region不足以容纳所有数据，则能放多少 拷贝多少
io_buffer_itr.copy_and_forward(
reinterpret_cast<void *>(region.data + region_data_idx),
region.size - region_data_idx);
shard_buffer_remain -= (region.size - region_data_idx);
++region_idx;
region_data_idx = 0;
}
}
}
closure->set_promise_value(ret);
});
closure->add_timer(timer);
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(PS_PULL_DENSE_TABLE);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
closure->request(i)->add_params((char *)&num_per_shard, // NOLINT
sizeof(num_per_shard));
PsService_Stub rpc_stub(GetDenseChannel(i));
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::PushDenseParam(const Region *regions,
size_t region_num,
size_t table_id) {
auto *accessor = GetTableAccessor(table_id);
auto accessor_info = accessor->GetAccessorInfo();
size_t request_call_num = _server_channels.size();
// 1.拆分Region数据到shard中，后续多shard并行拷贝数据
std::vector<std::vector<Region>> regions_partition(request_call_num);
uint32_t num_per_shard =
DenseDimPerShard(accessor_info.fea_dim, request_call_num);
size_t shard_data_size = num_per_shard * accessor_info.update_size;
size_t current_region_idx = 0;
size_t current_region_data_idx = 0;
for (size_t i = 0; i < request_call_num; ++i) {
size_t shard_data_remain_size = shard_data_size;
while (shard_data_remain_size > 0 && current_region_idx < region_num) {
const auto ®ion = regions[current_region_idx];
size_t region_remain_size = region.size - current_region_data_idx;
if (shard_data_remain_size >= region_remain_size) {
regions_partition[i].push_back(
Region(region.data + current_region_data_idx, region_remain_size));
++current_region_idx;
current_region_data_idx = 0;
shard_data_remain_size -= region_remain_size;
} else {
regions_partition[i].push_back(Region(
region.data + current_region_data_idx, shard_data_remain_size));
current_region_data_idx += shard_data_remain_size;
shard_data_remain_size = 0;
}
}
}
DownpourBrpcClosure *closure =
new DownpourBrpcClosure(request_call_num, [request_call_num](void *done) {
int ret = 0;
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
for (size_t i = 0; i < request_call_num; ++i) {
if (closure->check_response(i, PS_PUSH_DENSE_PARAM) != 0) {
ret = -1;
break;
}
}
closure->set_promise_value(ret);
});
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
static const int REGION_ASSIGN_BUFFER_SIZE = 1024 * 10;
static char region_assign_buffer[REGION_ASSIGN_BUFFER_SIZE]; // 用于数据补齐
// 开始多shard并行拷贝&请求
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(PS_PUSH_DENSE_PARAM);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
auto &request_buffer = closure->cntl(i)->request_attachment();
request_buffer.append(reinterpret_cast<void *>(&num_per_shard),
sizeof(uint32_t));
auto ®ion_list = regions_partition[i];
size_t fill_remain_size = shard_data_size;
for (auto ®ion : region_list) {
fill_remain_size -= region.size;
request_buffer.append(reinterpret_cast<void *>(region.data), region.size);
}
// 保证各分片数据对齐
while (fill_remain_size > 0) {
size_t fill_num = fill_remain_size > REGION_ASSIGN_BUFFER_SIZE
? REGION_ASSIGN_BUFFER_SIZE
: fill_remain_size;
request_buffer.append(reinterpret_cast<void *>(region_assign_buffer),
fill_num);
fill_remain_size -= fill_num;
}
PsService_Stub rpc_stub(GetDenseChannel(i));
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::PushSparseRawGradient(
size_t table_id, const uint64_t *keys, const float **update_values,
size_t num, void *done) {
auto *accessor = GetTableAccessor(table_id);
// 发送RPC请求
DownpourBrpcClosure *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
size_t request_call_num = _server_channels.size();
std::vector<std::vector<uint64_t>> ids;
std::vector<std::vector<const float *>> value_ptrs;
ids.resize(request_call_num);
value_ptrs.resize(request_call_num);
const auto &server_param = _config.server_param().downpour_server_param();
uint64_t shard_num = FLAGS_pserver_sparse_table_shard_num;
for (int i = 0; i < server_param.downpour_table_param_size(); ++i) {
const auto &table_param = server_param.downpour_table_param(i);
if (table_param.table_id() == table_id) {
shard_num = table_param.shard_num();
break;
}
}
for (size_t i = 0; i < num; ++i) {
size_t pserver_idx = get_sparse_shard(shard_num, request_call_num, keys[i]);
ids[pserver_idx].push_back(keys[i]);
value_ptrs[pserver_idx].push_back(update_values[i]);
}
for (size_t shard_idx = 0; shard_idx < request_call_num; ++shard_idx) {
auto kvs = ids[shard_idx];
auto value_ptr = value_ptrs[shard_idx];
size_t kv_size = kvs.size();
uint32_t value_size = accessor->GetAccessorInfo().update_size;
// 发送RPC请求
auto *push_request = closure->request(shard_idx);
push_request->set_cmd_id(PS_PUSH_SPARSE_TABLE);
push_request->set_table_id(table_id);
push_request->set_client_id(_client_id);
push_request->add_params((char *)&kv_size, sizeof(uint32_t)); // NOLINT
auto *push_data = push_request->mutable_data();
push_data->resize(kv_size * (sizeof(uint64_t) + value_size));
char *push_data_ptr = const_cast<char *>(push_data->data());
memcpy(push_data_ptr, kvs.data(), kv_size * sizeof(uint64_t));
push_data_ptr += kv_size * sizeof(uint64_t);
for (size_t i = 0; i < kv_size; ++i) {
memcpy(push_data_ptr, value_ptr[i], value_size);
push_data_ptr += value_size;
}
PsService_Stub rpc_stub(GetSparseChannel(shard_idx));
closure->cntl(shard_idx)->set_request_compress_type(
(brpc::CompressType)FLAGS_pserver_communicate_compress_type);
rpc_stub.service(closure->cntl(shard_idx), closure->request(shard_idx),
closure->response(shard_idx), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::PushDenseRawGradient(
int table_id, float *total_send_data, size_t total_send_data_size,
void *done) {
size_t request_call_num = _server_channels.size();
DownpourBrpcClosure *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
auto *accessor = GetTableAccessor(table_id);
uint32_t num_per_shard =
DenseDimPerShard(accessor->GetAccessorInfo().fea_dim, request_call_num);
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(PS_PUSH_DENSE_TABLE);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
auto *push_data = closure->request(i)->mutable_data();
push_data->clear();
push_data->resize(sizeof(uint32_t) + num_per_shard * sizeof(float));
char *push_data_ptr = const_cast<char *>(push_data->data());
memcpy(push_data_ptr, &num_per_shard, sizeof(uint32_t));
memcpy(push_data_ptr + sizeof(uint32_t),
total_send_data + i * num_per_shard, num_per_shard * sizeof(float));
// closure->cntl(i)->set_request_compress_type(
// (brpc::CompressType)FLAGS_pserver_communicate_compress_type);
PsService_Stub rpc_stub(GetDenseChannel(i));
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::PushGlobalStep(int table_id,
int64_t *total_send_data,
void *done) {
size_t request_call_num = _server_channels.size();
DownpourBrpcClosure *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
auto promise = std::make_shared<std::promise<int32_t>>();
closure->add_promise(promise);
std::future<int> fut = promise->get_future();
for (size_t i = 0; i < request_call_num; ++i) {
closure->request(i)->set_cmd_id(PS_PUSH_GLOBAL_STEP);
closure->request(i)->set_table_id(table_id);
closure->request(i)->set_client_id(_client_id);
auto *push_data = closure->request(i)->mutable_data();
push_data->clear();
int32_t num_per_shard = 1;
push_data->resize(sizeof(uint32_t) + num_per_shard * sizeof(int64_t));
char *push_data_ptr = const_cast<char *>(push_data->data());
memcpy(push_data_ptr, &num_per_shard, sizeof(uint32_t));
memcpy(push_data_ptr + sizeof(uint32_t), total_send_data,
num_per_shard * sizeof(int64_t));
PsService_Stub rpc_stub(GetDenseChannel(i));
rpc_stub.service(closure->cntl(i), closure->request(i),
closure->response(i), closure);
}
return fut;
}
std::future<int32_t> BrpcPsClient::PullSparse(float **select_values,
size_t table_id,
const uint64_t *keys, size_t num,
bool is_training) {
auto timer = std::make_shared<CostTimer>("pserver_client_pull_sparse");
auto local_timer =
std::make_shared<CostTimer>("pserver_client_pull_sparse_local");
size_t request_call_num = _server_channels.size();
auto shard_sorted_kvs = std::make_shared<
std::vector<std::vector<std::pair<uint64_t, float *>>>>();
shard_sorted_kvs->resize(request_call_num);
const auto &server_param = _config.server_param().downpour_server_param();
uint64_t shard_num = FLAGS_pserver_sparse_table_shard_num;
for (int i = 0; i < server_param.downpour_table_param_size(); ++i) {
const auto &table_param = server_param.downpour_table_param(i);
if (table_param.table_id() == table_id) {
shard_num = table_param.shard_num();
break;
}
}
for (size_t i = 0; i < num; ++i) {
size_t shard_id = get_sparse_shard(shard_num, request_call_num, keys[i]);
shard_sorted_kvs->at(shard_id).push_back({keys[i], select_values[i]});
}
auto *accessor = GetTableAccessor(table_id);
size_t value_size = accessor->GetAccessorInfo().select_size;
DownpourBrpcClosure *closure = new DownpourBrpcClosure(
request_call_num, [shard_sorted_kvs, value_size](void *done) {
int ret = 0;
auto *closure = reinterpret_cast<DownpourBrpcClosure *>(done);
for (size_t i = 0; i < shard_sorted_kvs->size(); ++i) {
if (closure->check_response(i, PS_PULL_SPARSE_TABLE) != 0) {
ret = -1;
break;
}
auto &request_kvs = shard_sorted_kvs->at(i);
auto &res_io_buffer = closure->cntl(i)->response_attachment();