1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
//===-- runtime/CUDA/allocator.cpp ----------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "flang/Runtime/CUDA/allocator.h"
#include "../derived.h"
#include "../stat.h"
#include "../terminator.h"
#include "../type-info.h"
#include "flang/Common/Fortran.h"
#include "flang/ISO_Fortran_binding_wrapper.h"
#include "flang/Runtime/CUDA/common.h"
#include "flang/Runtime/allocator-registry.h"
#include "cuda_runtime.h"
namespace Fortran::runtime::cuda {
extern "C" {
void RTDEF(CUFRegisterAllocator)() {
allocatorRegistry.Register(
kPinnedAllocatorPos, {&CUFAllocPinned, CUFFreePinned});
allocatorRegistry.Register(
kDeviceAllocatorPos, {&CUFAllocDevice, CUFFreeDevice});
allocatorRegistry.Register(
kManagedAllocatorPos, {&CUFAllocManaged, CUFFreeManaged});
allocatorRegistry.Register(
kUnifiedAllocatorPos, {&CUFAllocUnified, CUFFreeUnified});
}
}
void *CUFAllocPinned(std::size_t sizeInBytes) {
void *p;
CUDA_REPORT_IF_ERROR(cudaMallocHost((void **)&p, sizeInBytes));
return p;
}
void CUFFreePinned(void *p) { CUDA_REPORT_IF_ERROR(cudaFreeHost(p)); }
void *CUFAllocDevice(std::size_t sizeInBytes) {
void *p;
CUDA_REPORT_IF_ERROR(cudaMalloc(&p, sizeInBytes));
return p;
}
void CUFFreeDevice(void *p) { CUDA_REPORT_IF_ERROR(cudaFree(p)); }
void *CUFAllocManaged(std::size_t sizeInBytes) {
void *p;
CUDA_REPORT_IF_ERROR(
cudaMallocManaged((void **)&p, sizeInBytes, cudaMemAttachGlobal));
return reinterpret_cast<void *>(p);
}
void CUFFreeManaged(void *p) { CUDA_REPORT_IF_ERROR(cudaFree(p)); }
void *CUFAllocUnified(std::size_t sizeInBytes) {
// Call alloc managed for the time being.
return CUFAllocManaged(sizeInBytes);
}
void CUFFreeUnified(void *p) {
// Call free managed for the time being.
CUFFreeManaged(p);
}
} // namespace Fortran::runtime::cuda
|
