Program Listing for File CudaAdviseReadMostlyOperation.cpp¶
↰ Return to documentation for file (umpire/op/CudaAdviseReadMostlyOperation.cpp
)
//////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2016-20, Lawrence Livermore National Security, LLC and Umpire
// project contributors. See the COPYRIGHT file for details.
//
// SPDX-License-Identifier: (MIT)
//////////////////////////////////////////////////////////////////////////////
#include "umpire/op/CudaAdviseReadMostlyOperation.hpp"
#include <cuda_runtime_api.h>
#include "umpire/util/Macros.hpp"
namespace umpire {
namespace op {
void
CudaAdviseReadMostlyOperation::apply(
void* src_ptr,
util::AllocationRecord* UMPIRE_UNUSED_ARG(src_allocation),
int val,
std::size_t length)
{
int device = val;
cudaError_t error;
cudaDeviceProp properties;
error = ::cudaGetDeviceProperties(&properties, 0);
if (error != cudaSuccess) {
UMPIRE_ERROR("cudaGetDeviceProperties( device = " << 0 << "),"
<< " failed with error: "
<< cudaGetErrorString(error));
}
if (properties.managedMemory == 1
&& properties.concurrentManagedAccess == 1) {
error =
::cudaMemAdvise(src_ptr, length, cudaMemAdviseSetReadMostly, device);
if (error != cudaSuccess) {
UMPIRE_ERROR("cudaMemAdvise( src_ptr = " << src_ptr
<< ", length = " << length
<< ", cudaMemAdviseSetReadMostly, " << device << ") failed with error: "
<< cudaGetErrorString(error));
}
}
}
} // end of namespace op
} // end of namespace umpire