src/gromacs/gpu_utils/tests/devicetransfers.h

   1 /*
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   5  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
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  35 /*! \internal \file
  36  * \brief Declares helper functionality for device transfers for tests
  37  * for GPU host allocator.
  38  *
  39  * Undefined symbols in Google Test, GROMACS use of -Wundef, and the
  40  * implementation of FindCUDA.cmake and/or nvcc mean that no
  41  * compilation unit should include a gtest header while being compiled
  42  * by nvcc. None of -isystem, -Wno-undef, nor the pragma GCC
  43  * diagnostic work.
  44  *
  45  * Thus, this header isolates CUDA-specific functionality to its own
  46  * translation unit. The OpenCL and no-GPU implementations do not
  47  * require this separation, but do so for consistency.
  48  *
  49  * \author Mark Abraham <mark.j.abraham@gmail.com>
  50  */
  51 #ifndef GMX_GPU_UTILS_TESTS_DEVICETRANSFERS_H
  52 #define GMX_GPU_UTILS_TESTS_DEVICETRANSFERS_H
  53
  54 #include "gromacs/utility/arrayref.h"
  55
  56 struct gmx_gpu_info_t;
  57
  58 namespace gmx
  59 {
  60
  61 /*! \brief Helper function for GPU test code to be platform agnostic.
  62  *
  63  * Transfers \c input to device 0, which must be present, and
  64  * transfers it back into \c output. Both sizes must match.
  65  *
  66  * \throws InternalError  Upon any GPU API error condition. */
  67 void doDeviceTransfers(const gmx_gpu_info_t &gpuInfo,
  68                        ArrayRef<const char>  input,
  69                        ArrayRef<char>        output);
  70
  71 } // namespace gmx
  72
  73 #endif