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device.cpp
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/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <af/array.h>
#include <af/device.h>
#include <af/compatible.h>
#include <af/traits.hpp>
#include <af/backend.h>
#include "error.hpp"
namespace af
{
void setBackend(const Backend bknd)
{
AF_THROW(af_set_backend(bknd));
}
unsigned getBackendCount()
{
unsigned temp = 1;
AF_THROW(af_get_backend_count(&temp));
return temp;
}
int getAvailableBackends()
{
int result = 0;
AF_THROW(af_get_available_backends(&result));
return result;
}
af::Backend getBackendId(const array &in)
{
af::Backend result = (af::Backend)0;
AF_THROW(af_get_backend_id(&result, in.get()));
return result;
}
void info()
{
AF_THROW(af_info());
}
void deviceprop(char* d_name, char* d_platform, char *d_toolkit, char* d_compute)
{
deviceInfo(d_name, d_platform, d_toolkit, d_compute);
}
void deviceInfo(char* d_name, char* d_platform, char *d_toolkit, char* d_compute)
{
AF_THROW(af_device_info(d_name, d_platform, d_toolkit, d_compute));
}
int getDeviceCount()
{
int devices = -1;
AF_THROW(af_get_device_count(&devices));
return devices;
}
int devicecount() { return getDeviceCount(); }
void setDevice(const int device)
{
AF_THROW(af_set_device(device));
}
void deviceset(const int device) { setDevice(device); }
int getDevice()
{
int device = 0;
AF_THROW(af_get_device(&device));
return device;
}
bool isDoubleAvailable(const int device)
{
bool temp;
AF_THROW(af_get_dbl_support(&temp, device));
return temp;
}
int deviceget() { return getDevice(); }
void sync(int device)
{
AF_THROW(af_sync(device));
}
///////////////////////////////////////////////////////////////////////////
// Alloc and free host, pinned, zero copy
static unsigned size_of(af::dtype type)
{
switch(type) {
case f32: return sizeof(float);
case f64: return sizeof(double);
case s32: return sizeof(int);
case u32: return sizeof(unsigned);
case u8 : return sizeof(unsigned char);
case b8 : return sizeof(unsigned char);
case c32: return sizeof(float) * 2;
case c64: return sizeof(double) * 2;
case s16: return sizeof(short);
case u16: return sizeof(unsigned short);
default: return sizeof(float);
}
}
void *alloc(const size_t elements, const af::dtype type)
{
void *ptr;
AF_THROW(af_alloc_device(&ptr, elements * size_of(type)));
// FIXME: Add to map
return ptr;
}
void *pinned(const size_t elements, const af::dtype type)
{
void *ptr;
AF_THROW(af_alloc_pinned(&ptr, elements * size_of(type)));
// FIXME: Add to map
return ptr;
}
void free(const void *ptr)
{
//FIXME: look up map and call the right free
AF_THROW(af_free_device((void *)ptr));
}
void freePinned(const void *ptr)
{
//FIXME: look up map and call the right free
AF_THROW(af_free_pinned((void *)ptr));
}
void deviceGC()
{
AF_THROW(af_device_gc());
}
void deviceMemInfo(size_t *alloc_bytes, size_t *alloc_buffers,
size_t *lock_bytes, size_t *lock_buffers)
{
AF_THROW(af_device_mem_info(alloc_bytes, alloc_buffers,
lock_bytes, lock_buffers));
}
void setMemStepSize(const size_t step_bytes)
{
AF_THROW(af_set_mem_step_size(step_bytes));
}
size_t getMemStepSize()
{
size_t size_bytes = 0;
AF_THROW(af_get_mem_step_size(&size_bytes));
return size_bytes;
}
#define INSTANTIATE(T) \
template<> AFAPI \
T* alloc(const size_t elements) \
{ \
return (T*)alloc(elements, (af::dtype)dtype_traits<T>::af_type); \
} \
template<> AFAPI \
T* pinned(const size_t elements) \
{ \
return (T*)pinned(elements, (af::dtype)dtype_traits<T>::af_type); \
}
INSTANTIATE(float)
INSTANTIATE(double)
INSTANTIATE(cfloat)
INSTANTIATE(cdouble)
INSTANTIATE(int)
INSTANTIATE(unsigned)
INSTANTIATE(unsigned char)
INSTANTIATE(char)
INSTANTIATE(short)
INSTANTIATE(unsigned short)
}