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mpi_ops.h
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mpi_ops.h
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// Copyright 2018 Amazon.com, Inc. or its affiliates. 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.
// =============================================================================
#ifndef HOROVOD_MXNET_MPI_OPS_H
#define HOROVOD_MXNET_MPI_OPS_H
#include <mxnet/base.h>
#include <mxnet/c_api.h>
#include <mxnet/c_api_error.h>
#include <mxnet/engine.h>
#include <mxnet/ndarray.h>
#include "adapter.h"
#include "tensor_util.h"
namespace horovod {
namespace mxnet {
using namespace horovod::common;
typedef ::mxnet::NDArray NDArray;
typedef ::mxnet::Engine::CallbackOnComplete CallbackOnComplete;
typedef Request::RequestType OperationType;
typedef std::shared_ptr<MXTensor<NDArray>> MXTensorSharedPtr;
struct MpiOpsParam {
NDArray* input;
NDArray* output;
MXTensorSharedPtr cpu_tensor;
OperationType op_type;
std::string op_name;
int root_rank;
MpiOpsParam(NDArray* input, NDArray* output,
MXTensorSharedPtr cpu_tensor,
const OperationType& op_type, const std::string& op_name,
int root_rank)
: input(input),
output(output),
cpu_tensor(cpu_tensor),
op_type(op_type),
op_name(op_name),
root_rank(root_rank) {
}
};
inline MpiOpsParam* CreateMpiOpsParam(NDArray* input, NDArray* output,
MXTensorSharedPtr cpu_tensor,
const OperationType& op_type,
const std::string& op_name,
int root_rank) {
return new MpiOpsParam(input, output, cpu_tensor, op_type, op_name, root_rank);
}
void DeleteMpiOpsParam(void* param) {
auto ops_param = static_cast<MpiOpsParam*>(param);
delete ops_param;
}
extern "C" int horovod_mxnet_allreduce_async(NDArray* input, NDArray* output,
const char* name, bool average,
int priority);
extern "C" int horovod_mxnet_allgather_async(NDArray* input, NDArray* output,
const char* name, int priority);
extern "C" int horovod_mxnet_broadcast_async(NDArray* input, NDArray* output,
const char* name, int root_rank,
int priority);
} // namespace mxnet
} // namespace horovod
#endif // HOROVOD_MXNET_MPI_OPS_H