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CaffeOnACL/src/caffe/syncedmem.cpp at master · 2php/CaffeOnACL · GitHub
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#
include
"
caffe/common.hpp
"
#
include
"
caffe/syncedmem.hpp
"
#
include
"
caffe/util/math_functions.hpp
"
namespace
caffe
{
SyncedMemory::SyncedMemory
()
: cpu_ptr_(
NULL
), gpu_ptr_(
NULL
), size_(
0
), head_(
UNINITIALIZED
),
own_cpu_data_
(
false
), cpu_malloc_use_cuda_(
false
), own_gpu_data_(
false
) {
#
ifndef
CPU_ONLY
#
ifdef
DEBUG
CUDA_CHECK
(
cudaGetDevice
(&device_));
#
endif
#
endif
}
SyncedMemory::SyncedMemory
(
size_t
size)
: cpu_ptr_(
NULL
), gpu_ptr_(
NULL
), size_(size), head_(
UNINITIALIZED
),
own_cpu_data_(
false
), cpu_malloc_use_cuda_(
false
), own_gpu_data_(
false
) {
#
ifndef
CPU_ONLY
#
ifdef
DEBUG
CUDA_CHECK
(
cudaGetDevice
(&device_));
#
endif
#
endif
}
SyncedMemory::~SyncedMemory
() {
check_device
();
if
(cpu_ptr_ && own_cpu_data_) {
CaffeFreeHost
(cpu_ptr_, cpu_malloc_use_cuda_);
}
#
ifndef
CPU_ONLY
if
(gpu_ptr_ && own_gpu_data_) {
CUDA_CHECK
(
cudaFree
(gpu_ptr_));
}
#
endif
//
CPU_ONLY
}
inline
void
SyncedMemory::to_cpu
() {
check_device
();
switch
(head_) {
case
UNINITIALIZED
:
CaffeMallocHost
(&cpu_ptr_, size_, &cpu_malloc_use_cuda_);
caffe_memset
(size_,
0
, cpu_ptr_);
head_ =
HEAD_AT_CPU
;
own_cpu_data_ =
true
;
break
;
case
HEAD_AT_GPU
:
#
ifndef
CPU_ONLY
if
(cpu_ptr_ ==
NULL
) {
CaffeMallocHost
(&cpu_ptr_, size_, &cpu_malloc_use_cuda_);
own_cpu_data_ =
true
;
}
caffe_gpu_memcpy
(size_, gpu_ptr_, cpu_ptr_);
head_ =
SYNCED
;
#
else
#
ifndef
USE_ACL
NO_GPU
;
#
endif
#
endif
break
;
case
HEAD_AT_CPU
:
case
SYNCED
:
break
;
}
}
inline
void
SyncedMemory::to_gpu
() {
check_device
();
#
ifndef
CPU_ONLY
switch
(head_) {
case
UNINITIALIZED
:
CUDA_CHECK
(
cudaMalloc
(&gpu_ptr_, size_));
caffe_gpu_memset
(size_,
0
, gpu_ptr_);
head_ =
HEAD_AT_GPU
;
own_gpu_data_ =
true
;
break
;
case
HEAD_AT_CPU
:
if
(gpu_ptr_ ==
NULL
) {
CUDA_CHECK
(
cudaMalloc
(&gpu_ptr_, size_));
own_gpu_data_ =
true
;
}
caffe_gpu_memcpy
(size_, cpu_ptr_, gpu_ptr_);
head_ =
SYNCED
;
break
;
case
HEAD_AT_GPU
:
case
SYNCED
:
break
;
}
#
else
NO_GPU
;
#
endif
}
const
void
*
SyncedMemory::cpu_data
() {
check_device
();
to_cpu
();
return
(
const
void
*)cpu_ptr_;
}
void
SyncedMemory::set_cpu_data
(
void
* data) {
check_device
();
CHECK
(data);
if
(own_cpu_data_) {
CaffeFreeHost
(cpu_ptr_, cpu_malloc_use_cuda_);
}
cpu_ptr_ = data;
head_ =
HEAD_AT_CPU
;
own_cpu_data_ =
false
;
}
const
void
*
SyncedMemory::gpu_data
() {
check_device
();
#
ifndef
CPU_ONLY
to_gpu
();
return
(
const
void
*)gpu_ptr_;
#
else
#
ifdef
USE_ACL
to_cpu
();
return
(
const
void
*)cpu_ptr_;
#
else
NO_GPU
;
return
NULL
;
#
endif
#
endif
}
void
SyncedMemory::set_gpu_data
(
void
* data) {
check_device
();
#
ifndef
CPU_ONLY
CHECK
(data);
if
(own_gpu_data_) {
CUDA_CHECK
(
cudaFree
(gpu_ptr_));
}
gpu_ptr_ = data;
head_ =
HEAD_AT_GPU
;
own_gpu_data_ =
false
;
#
else
#
ifdef
USE_ACL
gpu_ptr_ = data;
head_ =
HEAD_AT_GPU
;
own_gpu_data_ =
false
;
#
else
NO_GPU
;
#
endif
#
endif
}
void
*
SyncedMemory::mutable_cpu_data
() {
check_device
();
to_cpu
();
head_ =
HEAD_AT_CPU
;
return
cpu_ptr_;
}
void
*
SyncedMemory::mutable_gpu_data
() {
check_device
();
#
ifndef
CPU_ONLY
to_gpu
();
head_ =
HEAD_AT_GPU
;
return
gpu_ptr_;
#
else
#
ifdef
USE_ACL
to_cpu
();
head_ =
HEAD_AT_GPU
;
return
cpu_ptr_;
#
else
NO_GPU
;
return
NULL
;
#
endif
#
endif
}
#
ifndef
CPU_ONLY
void
SyncedMemory::async_gpu_push
(
const
cudaStream_t& stream) {
check_device
();
CHECK
(head_ ==
HEAD_AT_CPU
);
if
(gpu_ptr_ ==
NULL
) {
CUDA_CHECK
(
cudaMalloc
(&gpu_ptr_, size_));
own_gpu_data_ =
true
;
}
const
cudaMemcpyKind put = cudaMemcpyHostToDevice;
CUDA_CHECK
(
cudaMemcpyAsync
(gpu_ptr_, cpu_ptr_, size_, put, stream));
//
Assume caller will synchronize on the stream before use
head_ =
SYNCED
;
}
#
endif
void
SyncedMemory::check_device
() {
#
ifndef
CPU_ONLY
#
ifdef
DEBUG
int
device;
cudaGetDevice
(&device);
CHECK
(device == device_);
if
(gpu_ptr_ && own_gpu_data_) {
cudaPointerAttributes attributes;
CUDA_CHECK
(
cudaPointerGetAttributes
(&attributes, gpu_ptr_));
CHECK
(attributes.
device
== device_);
}
#
endif
#
endif
}
}
//
namespace caffe
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