src/gromacs/domdec/gpuhaloexchange_impl.cpp

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  35 /*! \internal \file
  36  *
  37  * \brief May be used to implement Domdec CUDA interfaces for non-GPU builds.
  38  *
  39  * Currently, reports and exits if any of the interfaces are called.
  40  * Needed to satisfy compiler on systems, where CUDA is not available.
  41  *
  42  * \author Alan Gray <alang@nvidia.com>
  43  *
  44  * \ingroup module_domdec
  45  */
  46 #include "gmxpre.h"
  47
  48 #include "config.h"
  49
  50 #include "gromacs/domdec/gpuhaloexchange.h"
  51 #include "gromacs/utility/gmxassert.h"
  52
  53 #if !GMX_GPU_CUDA
  54
  55 namespace gmx
  56 {
  57
  58 /*!\brief Impl class stub. */
  59 class GpuHaloExchange::Impl
  60 {
  61 };
  62
  63 /*!\brief Constructor stub. */
  64 GpuHaloExchange::GpuHaloExchange(gmx_domdec_t* /* dd */,
  65                                  int /* dimIndex */,
  66                                  MPI_Comm /* mpi_comm_mysim */,
  67                                  const DeviceContext& /* deviceContext */,
  68                                  const DeviceStream& /*streamLocal */,
  69                                  const DeviceStream& /*streamNonLocal */,
  70                                  int /*pulse */,
  71                                  gmx_wallcycle* /*wcycle*/) :
  72     impl_(nullptr)
  73 {
  74     GMX_ASSERT(false,
  75                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
  76 }
  77
  78 GpuHaloExchange::~GpuHaloExchange() = default;
  79
  80 /*!\brief init halo exhange stub. */
  81 void GpuHaloExchange::reinitHalo(DeviceBuffer<RVec> /* d_coordinatesBuffer */,
  82                                  DeviceBuffer<RVec> /* d_forcesBuffer */)
  83 {
  84     GMX_ASSERT(!impl_,
  85                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
  86 }
  87
  88 /*!\brief apply X halo exchange stub. */
  89 void GpuHaloExchange::communicateHaloCoordinates(const matrix /* box */,
  90                                                  GpuEventSynchronizer* /*coordinatesOnDeviceEvent*/)
  91 {
  92     GMX_ASSERT(!impl_,
  93                "A CPU stub for GPU Halo Exchange exchange was called insted of the correct "
  94                "implementation.");
  95 }
  96
  97 /*!\brief apply F halo exchange stub. */
  98 void GpuHaloExchange::communicateHaloForces(bool gmx_unused accumulateForces)
  99 {
 100     GMX_ASSERT(!impl_,
 101                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
 102 }
 103
 104 /*!\brief get forces ready on device event stub. */
 105 GpuEventSynchronizer* GpuHaloExchange::getForcesReadyOnDeviceEvent()
 106 {
 107     GMX_ASSERT(!impl_,
 108                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
 109     return nullptr;
 110 }
 111
 112 } // namespace gmx
 113
 114 #endif // !GMX_GPU_CUDA