Remove source file that is no longer in use

All CUDA data transfer calls now use the same wrappers, the
NBNXM-specific wrapers can be removed.

diff --git a/src/gromacs/gpu_utils/cudautils.cu b/src/gromacs/gpu_utils/cudautils.cu
deleted file mode 100644 (file)
index 83ee02e..0000000
--- a/src/gromacs/gpu_utils/cudautils.cu
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * This file is part of the GROMACS molecular simulation package.
- *
- * Copyright (c) 2012,2014,2015,2016,2017 The GROMACS development team.
- * Copyright (c) 2018,2019,2020, by the GROMACS development team, led by
- * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
- * and including many others, as listed in the AUTHORS file in the
- * top-level source directory and at http://www.gromacs.org.
- *
- * GROMACS is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1
- * of the License, or (at your option) any later version.
- *
- * GROMACS is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with GROMACS; if not, see
- * http://www.gnu.org/licenses, or write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
- *
- * If you want to redistribute modifications to GROMACS, please
- * consider that scientific software is very special. Version
- * control is crucial - bugs must be traceable. We will be happy to
- * consider code for inclusion in the official distribution, but
- * derived work must not be called official GROMACS. Details are found
- * in the README & COPYING files - if they are missing, get the
- * official version at http://www.gromacs.org.
- *
- * To help us fund GROMACS development, we humbly ask that you cite
- * the research papers on the package. Check out http://www.gromacs.org.
- */
-
-#include "gmxpre.h"
-
-#include "cudautils.cuh"
-
-#include <cassert>
-#include <cstdlib>
-
-#include "gromacs/gpu_utils/cuda_arch_utils.cuh"
-#include "gromacs/gpu_utils/gpu_utils.h"
-#include "gromacs/utility/gmxassert.h"
-
-/*** Generic CUDA data operation wrappers ***/
-
-// TODO: template on transferKind to avoid runtime conditionals
-int cu_copy_D2H(void* h_dest, void* d_src, size_t bytes, GpuApiCallBehavior transferKind, cudaStream_t s = nullptr)
-{
-    cudaError_t stat;
-
-    if (h_dest == nullptr || d_src == nullptr || bytes == 0)
-    {
-        return -1;
-    }
-
-    switch (transferKind)
-    {
-        case GpuApiCallBehavior::Async:
-            GMX_ASSERT(isHostMemoryPinned(h_dest), "Destination buffer was not pinned for CUDA");
-            stat = cudaMemcpyAsync(h_dest, d_src, bytes, cudaMemcpyDeviceToHost, s);
-            CU_RET_ERR(stat, "DtoH cudaMemcpyAsync failed");
-            break;
-
-        case GpuApiCallBehavior::Sync:
-            stat = cudaMemcpy(h_dest, d_src, bytes, cudaMemcpyDeviceToHost);
-            CU_RET_ERR(stat, "DtoH cudaMemcpy failed");
-            break;
-
-        default: throw;
-    }
-
-    return 0;
-}
-
-int cu_copy_D2H_sync(void* h_dest, void* d_src, size_t bytes)
-{
-    return cu_copy_D2H(h_dest, d_src, bytes, GpuApiCallBehavior::Sync);
-}
-
-/*!
- *  The copy is launched in stream s or if not specified, in stream 0.
- */
-int cu_copy_D2H_async(void* h_dest, void* d_src, size_t bytes, cudaStream_t s = nullptr)
-{
-    return cu_copy_D2H(h_dest, d_src, bytes, GpuApiCallBehavior::Async, s);
-}
-
-// TODO: template on transferKind to avoid runtime conditionals
-int cu_copy_H2D(void* d_dest, const void* h_src, size_t bytes, GpuApiCallBehavior transferKind, cudaStream_t s = nullptr)
-{
-    cudaError_t stat;
-
-    if (d_dest == nullptr || h_src == nullptr || bytes == 0)
-    {
-        return -1;
-    }
-
-    switch (transferKind)
-    {
-        case GpuApiCallBehavior::Async:
-            GMX_ASSERT(isHostMemoryPinned(h_src), "Source buffer was not pinned for CUDA");
-            stat = cudaMemcpyAsync(d_dest, h_src, bytes, cudaMemcpyHostToDevice, s);
-            CU_RET_ERR(stat, "HtoD cudaMemcpyAsync failed");
-            break;
-
-        case GpuApiCallBehavior::Sync:
-            stat = cudaMemcpy(d_dest, h_src, bytes, cudaMemcpyHostToDevice);
-            CU_RET_ERR(stat, "HtoD cudaMemcpy failed");
-            break;
-
-        default: throw;
-    }
-
-    return 0;
-}
-
-int cu_copy_H2D_sync(void* d_dest, const void* h_src, size_t bytes)
-{
-    return cu_copy_H2D(d_dest, h_src, bytes, GpuApiCallBehavior::Sync);
-}
-
-/*!
- *  The copy is launched in stream s or if not specified, in stream 0.
- */
-int cu_copy_H2D_async(void* d_dest, const void* h_src, size_t bytes, cudaStream_t s = nullptr)
-{
-    return cu_copy_H2D(d_dest, h_src, bytes, GpuApiCallBehavior::Async, s);
-}