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ProcessGroupGloo.h
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ProcessGroupGloo.h
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// Copyright (c) 2022 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.
#pragma once
#include <future>
#include <mutex>
#include "paddle/fluid/distributed/collective/ProcessGroup.h"
#ifdef PADDLE_WITH_GLOO
#include "paddle/fluid/framework/fleet/gloo_wrapper.h"
#endif
#include "paddle/fluid/distributed/store/store.h"
#include "paddle/fluid/distributed/store/tcp_store.h"
constexpr const char* GLOO_BACKEND_NAME = "GLOO";
namespace paddle {
namespace distributed {
class ProcessGroupGloo : public ProcessGroup {
public:
class GlooTask : public ProcessGroup::Task,
public std::enable_shared_from_this<GlooTask> {
public:
explicit GlooTask(int rank,
const std::vector<phi::DenseTensor>& input_tensors,
CommType comm_type);
~GlooTask() = default;
virtual void Run() = 0;
bool Wait(std::chrono::milliseconds timeout) override { return true; }
bool IsCompleted() override { return true; }
void Synchronize() override {}
protected:
friend class ProcessGroupGloo;
};
class GlooStore : public ::gloo::rendezvous::Store {
public:
explicit GlooStore(const std::shared_ptr<paddle::distributed::Store>& store)
: _store(store) {}
~GlooStore() = default;
std::vector<char> get(const std::string& key) override {
VLOG(3) << "GlooStore::get";
auto value = _store->get(key);
return std::vector<char>(value.begin(), value.end());
}
void wait(const std::vector<std::string>& keys) override {
VLOG(3) << "GlooStore::wait";
for (auto& key : keys) {
_store->wait(key);
}
}
void set(const std::string& key, const std::vector<char>& value) override {
VLOG(3) << "GlooStore::set";
std::vector<uint8_t> tmp(value.begin(), value.end());
_store->set(key, tmp);
}
void wait(const std::vector<std::string>& keys,
const std::chrono::milliseconds& timeout) override {
VLOG(3) << "GlooStore::wait";
for (auto& key : keys) {
_store->wait(key);
}
// wait(keys);
}
protected:
std::shared_ptr<paddle::distributed::Store> _store;
};
class GlooOptions {
public:
GlooOptions() = default;
~GlooOptions() = default;
static std::shared_ptr<GlooOptions> create() {
return std::make_shared<GlooOptions>();
}
std::shared_ptr<::gloo::transport::Device> device;
};
explicit ProcessGroupGloo(
const std::shared_ptr<paddle::distributed::Store>& store, int rank,
int world_size, const platform::Place& place, int gid,
std::shared_ptr<GlooOptions> options);
~ProcessGroupGloo() = default;
std::shared_ptr<ProcessGroup::Task> Broadcast(
std::vector<phi::DenseTensor>& inputs,
std::vector<phi::DenseTensor>& outputs,
const BroadcastOptions& = BroadcastOptions()) override;
std::shared_ptr<ProcessGroup::Task> AllReduce(
std::vector<phi::DenseTensor>& inputs,
std::vector<phi::DenseTensor>& outputs,
const AllreduceOptions& opts = AllreduceOptions()) override;
std::shared_ptr<ProcessGroup::Task> Barrier(
const BarrierOptions& = BarrierOptions()) override;
std::shared_ptr<ProcessGroup::Task> AllGather(
std::vector<phi::DenseTensor>& in_tensors,
std::vector<phi::DenseTensor>& out_tensors) override;
std::shared_ptr<ProcessGroup::Task> Reduce(
std::vector<phi::DenseTensor>& in_tensors,
std::vector<phi::DenseTensor>& out_tensors,
const ReduceOptions& opts) override;
std::shared_ptr<ProcessGroup::Task> Scatter(
std::vector<phi::DenseTensor>& in_tensors,
std::vector<phi::DenseTensor>& out_tensors,
const ScatterOptions&) override;
std::shared_ptr<::gloo::Context> get_context() { return _context; }
uint64_t next_tag() { return _tag++; }
const std::string GetBackendName() const override {
return GLOO_BACKEND_NAME;
}
// Helper functions for Gloo.
static std::shared_ptr<::gloo::transport::Device> createDeviceForHostname(
const std::string& hostname);
static std::shared_ptr<::gloo::transport::Device> createDeviceForInterface(
const std::string& ifname);
static std::shared_ptr<::gloo::transport::Device> createDefaultDevice();
protected:
uint32_t _tag;
std::shared_ptr<gloo::rendezvous::Context> _context;
std::shared_ptr<::gloo::rendezvous::Store> _store;
};
} // namespace distributed
} // namespace paddle