lammps/lib/gpu/geryon/hip_kernel.h

299 lines
10 KiB
C++

/* -----------------------------------------------------------------------
Copyright (2010) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the Simplified BSD License.
----------------------------------------------------------------------- */
#ifndef HIP_KERNEL
#define HIP_KERNEL
#include <hip/hip_runtime.h>
#include "hip_device.h"
#include <fstream>
#include <string>
#include <iostream>
namespace ucl_hip {
class UCL_Texture;
template <class numtyp> class UCL_D_Vec;
template <class numtyp> class UCL_D_Mat;
template <class hosttype, class devtype> class UCL_Vector;
template <class hosttype, class devtype> class UCL_Matrix;
#define UCL_MAX_KERNEL_ARGS 256
/// Class storing 1 or more kernel functions from a single string or file
class UCL_Program {
UCL_Device* _device_ptr;
public:
inline UCL_Program(UCL_Device &device) { _device_ptr = &device; _cq=device.cq(); }
inline UCL_Program(UCL_Device &device, const void *program,
const char *flags="", std::string *log=NULL) {
_device_ptr = &device; _cq=device.cq();
init(device);
load_string(program,flags,log);
}
inline ~UCL_Program() {}
/// Initialize the program with a device
inline void init(UCL_Device &device) { _device_ptr = &device; _cq=device.cq(); }
/// Clear any data associated with program
/** \note Must call init() after each clear **/
inline void clear() { }
/// Load a program from a file and compile with flags
inline int load(const char *filename, const char *flags="", std::string *log=NULL) {
std::ifstream in(filename);
if (!in || in.is_open()==false) {
#ifndef UCL_NO_EXIT
std::cerr << "UCL Error: Could not open kernel file: "
<< filename << std::endl;
UCL_GERYON_EXIT;
#endif
return UCL_FILE_NOT_FOUND;
}
std::string program((std::istreambuf_iterator<char>(in)),
std::istreambuf_iterator<char>());
in.close();
return load_string(program.c_str(),flags,log);
}
/// Load a program from a string and compile with flags
inline int load_string(const void *program, const char *flags="", std::string *log=NULL) {
return _device_ptr->load_module(program, _module, log);
}
friend class UCL_Kernel;
private:
hipModule_t _module;
hipStream_t _cq;
friend class UCL_Texture;
};
/// Class for dealing with CUDA Driver kernels
class UCL_Kernel {
public:
UCL_Kernel() : _dimensions(1), _num_args(0) {
_num_blocks[0]=0;
}
UCL_Kernel(UCL_Program &program, const char *function) :
_dimensions(1), _num_args(0) {
_num_blocks[0]=0;
set_function(program,function);
_cq=program._cq;
}
~UCL_Kernel() {}
/// Clear any function associated with the kernel
inline void clear() { }
/// Get the kernel function from a program
/** \ret UCL_ERROR_FLAG (UCL_SUCCESS, UCL_FILE_NOT_FOUND, UCL_ERROR) **/
inline int set_function(UCL_Program &program, const char *function) {
hipError_t err=hipModuleGetFunction(&_kernel,program._module,function);
if (err!=hipSuccess) {
#ifndef UCL_NO_EXIT
std::cerr << "UCL Error: Could not find function: " << function
<< " in program.\n";
UCL_GERYON_EXIT;
#endif
return UCL_FUNCTION_NOT_FOUND;
}
_cq=program._cq;
return UCL_SUCCESS;
}
/// Set the kernel argument.
/** If not a device pointer, this must be repeated each time the argument
* changes
* \note To set kernel parameter i (i>0), parameter i-1 must be set **/
template <class dtype>
inline void set_arg(const unsigned index, const dtype * const arg) {
if (index==_num_args)
add_arg(arg);
else if (index<_num_args){
assert(0==1); // not implemented
}
else
assert(0==1); // Must add kernel parameters in sequential order
}
/// Set a geryon container as a kernel argument.
template <class numtyp>
inline void set_arg(const UCL_D_Vec<numtyp> * const arg)
{ set_arg(&arg->begin()); }
/// Set a geryon container as a kernel argument.
template <class numtyp>
inline void set_arg(const UCL_D_Mat<numtyp> * const arg)
{ set_arg(&arg->begin()); }
/// Set a geryon container as a kernel argument.
template <class hosttype, class devtype>
inline void set_arg(const UCL_Vector<hosttype, devtype> * const arg)
{ set_arg(&arg->device.begin()); }
/// Set a geryon container as a kernel argument.
template <class hosttype, class devtype>
inline void set_arg(const UCL_Matrix<hosttype, devtype> * const arg)
{ set_arg(&arg->device.begin()); }
/// Add a kernel argument.
inline void add_arg(const hipDeviceptr_t* const arg) {
add_arg<void*>((void**)arg);
}
/// Add a kernel argument.
template <class dtype>
inline void add_arg(const dtype* const arg) {
const auto old_size = _hip_kernel_args.size();
const auto aligned_size = (old_size+alignof(dtype)-1) & ~(alignof(dtype)-1);
const auto arg_size = sizeof(dtype);
_hip_kernel_args.resize(aligned_size + arg_size);
*((dtype*)(&_hip_kernel_args[aligned_size])) = *arg;
_num_args++;
if (_num_args>UCL_MAX_KERNEL_ARGS) assert(0==1);
}
/// Add a geryon container as a kernel argument.
template <class numtyp>
inline void add_arg(const UCL_D_Vec<numtyp> * const arg)
{ add_arg(&arg->begin()); }
/// Add a geryon container as a kernel argument.
template <class numtyp>
inline void add_arg(const UCL_D_Mat<numtyp> * const arg)
{ add_arg(&arg->begin()); }
/// Add a geryon container as a kernel argument.
template <class hosttype, class devtype>
inline void add_arg(const UCL_Vector<hosttype, devtype> * const arg)
{ add_arg(&arg->device.begin()); }
/// Add a geryon container as a kernel argument.
template <class hosttype, class devtype>
inline void add_arg(const UCL_Matrix<hosttype, devtype> * const arg)
{ add_arg(&arg->device.begin()); }
/// Set the number of thread blocks and the number of threads in each block
/** \note This should be called before any arguments have been added
\note The default command queue is used for the kernel execution **/
inline void set_size(const size_t num_blocks, const size_t block_size) {
_dimensions=1;
_num_blocks[0]=num_blocks;
_num_blocks[1]=1;
_num_blocks[2]=1;
_block_size[0]=block_size;
_block_size[1]=1;
_block_size[2]=1;
}
/// Set the number of thread blocks and the number of threads in each block
/** \note This should be called before any arguments have been added
\note The default command queue for the kernel is changed to cq **/
inline void set_size(const size_t num_blocks, const size_t block_size,
command_queue &cq)
{ _cq=cq; set_size(num_blocks,block_size); }
/// Set the number of thread blocks and the number of threads in each block
/** \note This should be called before any arguments have been added
\note The default command queue is used for the kernel execution **/
inline void set_size(const size_t num_blocks_x, const size_t num_blocks_y,
const size_t block_size_x, const size_t block_size_y) {
_dimensions=2;
_num_blocks[0]=num_blocks_x;
_num_blocks[1]=num_blocks_y;
_num_blocks[2]=1;
_block_size[0]=block_size_x;
_block_size[1]=block_size_y;
_block_size[2]=1;
}
/// Set the number of thread blocks and the number of threads in each block
/** \note This should be called before any arguments have been added
\note The default command queue for the kernel is changed to cq **/
inline void set_size(const size_t num_blocks_x, const size_t num_blocks_y,
const size_t block_size_x, const size_t block_size_y,
command_queue &cq)
{_cq=cq; set_size(num_blocks_x, num_blocks_y, block_size_x, block_size_y);}
/// Set the number of thread blocks and the number of threads in each block
/** \note This should be called before any arguments have been added
\note The default command queue is used for the kernel execution **/
inline void set_size(const size_t num_blocks_x, const size_t num_blocks_y,
const size_t block_size_x,
const size_t block_size_y, const size_t block_size_z) {
_dimensions=2;
_num_blocks[0]=num_blocks_x;
_num_blocks[1]=num_blocks_y;
_num_blocks[2]=1;
_block_size[0]=block_size_x;
_block_size[1]=block_size_y;
_block_size[2]=block_size_z;
}
/// Set the number of thread blocks and the number of threads in each block
/** \note This should be called before any arguments have been added
\note The default command queue is used for the kernel execution **/
inline void set_size(const size_t num_blocks_x, const size_t num_blocks_y,
const size_t block_size_x, const size_t block_size_y,
const size_t block_size_z, command_queue &cq) {
_cq=cq;
set_size(num_blocks_x, num_blocks_y, block_size_x, block_size_y,
block_size_z);
}
/// Run the kernel in the default command queue
inline void run() {
size_t args_size = _hip_kernel_args.size();
void *config[] = {
HIP_LAUNCH_PARAM_BUFFER_POINTER, (void*)_hip_kernel_args.data(),
HIP_LAUNCH_PARAM_BUFFER_SIZE, &args_size,
HIP_LAUNCH_PARAM_END
};
const auto res = hipModuleLaunchKernel(_kernel,_num_blocks[0],_num_blocks[1],
_num_blocks[2],_block_size[0],_block_size[1],
_block_size[2],0,_cq, NULL, config);
CU_SAFE_CALL(res);
//#endif
}
/// Clear any arguments associated with the kernel
inline void clear_args() {
_num_args=0;
_hip_kernel_args.clear();
}
/// Return the default command queue/stream associated with this data
inline command_queue & cq() { return _cq; }
/// Change the default command queue associated with matrix
inline void cq(command_queue &cq_in) { _cq=cq_in; }
#include "ucl_arg_kludge.h"
private:
hipFunction_t _kernel;
hipStream_t _cq;
unsigned _dimensions;
unsigned _num_blocks[3];
unsigned _num_args;
friend class UCL_Texture;
unsigned _block_size[3];
std::vector<char> _hip_kernel_args;
};
} // namespace
#endif