gpu/sync_info_helpers.hpp

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// Copyright (c) 2014-2023, Lawrence Livermore National Security, LLC.
// Produced at the Lawrence Livermore National Laboratory.
// Written by the LBANN Research Team (B. Van Essen, et al.) listed in
// the CONTRIBUTORS file. <lbann-dev@llnl.gov>
//
// LLNL-CODE-697807.
// All rights reserved.
//
// This file is part of LBANN: Livermore Big Artificial Neural Network
// Toolkit. For details, see http://software.llnl.gov/LBANN or
// https://github.com/LLNL/LBANN.
//
// Licensed under the Apache License, Version 2.0 (the "Licensee"); 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
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#ifndef LBANN_UTILS_GPU_SYNC_INFO_HELPERS_HPP_INCLUDED
#define LBANN_UTILS_GPU_SYNC_INFO_HELPERS_HPP_INCLUDED

#include <El.hpp>

namespace lbann {
namespace gpu {


template <typename TensorDataType>
El::SyncInfo<El::Device::GPU>
get_sync_info(El::AbstractMatrix<TensorDataType> const& m)
{
  using GPUMatType = El::Matrix<TensorDataType, El::Device::GPU>;
  return El::SyncInfoFromMatrix(dynamic_cast<GPUMatType const&>(m));
}

template <typename TensorDataType>
El::SyncInfo<El::Device::GPU>
get_sync_info(El::Matrix<TensorDataType, El::Device::GPU> const& m) noexcept
{
  return El::SyncInfoFromMatrix(m);
}

template <typename TensorDataType>
El::SyncInfo<El::Device::GPU>
get_sync_info(El::AbstractDistMatrix<TensorDataType> const& m)
{
  using GPUMatType = El::Matrix<TensorDataType, El::Device::GPU>;
  return El::SyncInfoFromMatrix(
    dynamic_cast<GPUMatType const&>(m.LockedMatrix()));
}

template <typename TensorDataType, El::Dist RowDist, El::Dist ColDist>
El::SyncInfo<El::Device::GPU>
get_sync_info(El::DistMatrix<TensorDataType,
                             RowDist,
                             ColDist,
                             El::ELEMENT,
                             El::Device::GPU> const& m) noexcept
{
  return El::SyncInfoFromMatrix(m.LockedMatrix());
}

} // namespace gpu
} // namespace lbann
#endif // LBANN_UTILS_GPU_SYNC_INFO_HELPERS_HPP_INCLUDED