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
  52 #if GMX_GPU != GMX_GPU_CUDA
  53
  54 namespace gmx
  55 {
  56
  57 /*!\brief Impl class stub. */
  58 class GpuHaloExchange::Impl
  59 {
  60 };
  61
  62 /*!\brief Constructor stub. */
  63 GpuHaloExchange::GpuHaloExchange(gmx_domdec_t* /* dd */,
  64                                  MPI_Comm /* mpi_comm_mysim */,
  65                                  const DeviceContext& /* deviceContext */,
  66                                  const DeviceStream& /*streamLocal */,
  67                                  const DeviceStream& /*streamNonLocal */,
  68                                  int /*pulse */,
  69                                  gmx_wallcycle* /*wcycle*/) :
  70     impl_(nullptr)
  71 {
  72     GMX_ASSERT(false,
  73                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
  74 }
  75
  76 GpuHaloExchange::~GpuHaloExchange() = default;
  77
  78 /*!\brief init halo exhange stub. */
  79 void GpuHaloExchange::reinitHalo(DeviceBuffer<RVec> /* d_coordinatesBuffer */,
  80                                  DeviceBuffer<RVec> /* d_forcesBuffer */)
  81 {
  82     GMX_ASSERT(!impl_,
  83                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
  84 }
  85
  86 /*!\brief apply X halo exchange stub. */
  87 void GpuHaloExchange::communicateHaloCoordinates(const matrix /* box */,
  88                                                  GpuEventSynchronizer* /*coordinatesOnDeviceEvent*/)
  89 {
  90     GMX_ASSERT(!impl_,
  91                "A CPU stub for GPU Halo Exchange exchange was called insted of the correct "
  92                "implementation.");
  93 }
  94
  95 /*!\brief apply F halo exchange stub. */
  96 void GpuHaloExchange::communicateHaloForces(bool gmx_unused accumulateForces)
  97 {
  98     GMX_ASSERT(!impl_,
  99                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
 100 }
 101
 102 /*!\brief get forces ready on device event stub. */
 103 GpuEventSynchronizer* GpuHaloExchange::getForcesReadyOnDeviceEvent()
 104 {
 105     GMX_ASSERT(!impl_,
 106                "A CPU stub for GPU Halo Exchange was called insted of the correct implementation.");
 107     return nullptr;
 108 }
 109
 110 } // namespace gmx
 111
 112 #endif /* GMX_GPU != GMX_GPU_CUDA */