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#define MATRIX_DATA_FREE(ptr) cuda_float_array_free(ptr)
#define MATRIX_DATA_ALLOC(dptr, stride, width, height) cuda_float_array_alloc(dptr, stride, width, height)
#define MATRIX_DATA_WRITE(data, idx, val) cuda_float_array_write(data, idx, val)
#define MATRIX_DATA_READ(data, idx) cuda_float_array_read(data, idx)
#define MATRIX_INIT(L) cuda_float_init(L)
#define NERV_GENERIC_MATRIX
#define nerv_float_matrix_(NAME) nerv_float_matrix_cuda_ ## NAME
#include "../common.h"
#include "generic/matrix.h"
#include "cukernel.h"
#include "cuda.h"
#include "cuda_runtime.h"
#include "driver_types.h"
#include "cublas_v2.h"
const char *nerv_float_matrix_(tname) = "nerv.FloatCuMatrix";
static cublasHandle_t cublas_handle;
Matrix *nerv_float_matrix_(new_)(long nrow, long ncol);
static int nerv_float_matrix_(add)(lua_State *L) {
Matrix *a = luaT_checkudata(L, 1, nerv_float_matrix_(tname));
Matrix *b = luaT_checkudata(L, 2, nerv_float_matrix_(tname));
Matrix *c;
long nrow, ncol;
if (!(a->nrow == b->nrow && a->ncol == b->ncol))
nerv_error(L, "Matrices should be of the same dimension");
nrow = a->nrow;
ncol = a->ncol;
c = nerv_float_matrix_(new_)(nrow, ncol);
float alpha = 1.0f, beta = 1.0f;
cublasSgeam(cublas_handle, CUBLAS_OP_N, CUBLAS_OP_N,
ncol, nrow,
&alpha,
a->data.f, a->stride / sizeof(float),
&beta,
b->data.f, b->stride / sizeof(float),
c->data.f, c->stride / sizeof(float));
luaT_pushudata(L, c, nerv_float_matrix_(tname));
return 1;
}
static int nerv_float_matrix_(mul)(lua_State *L) {
Matrix *a = luaT_checkudata(L, 1, nerv_float_matrix_(tname));
Matrix *b = luaT_checkudata(L, 2, nerv_float_matrix_(tname));
Matrix *c;
if (a->ncol != b->nrow)
nerv_error(L, "Wrong dimension of multipliers");
c = nerv_float_matrix_(new_)(a->nrow, b->ncol);
float alpha = 1.0f, beta = 0.0f;
cublasSgemm(cublas_handle, CUBLAS_OP_N, CUBLAS_OP_N,
b->ncol, a->nrow, b->nrow,
&alpha,
b->data.f, b->stride / sizeof(float),
a->data.f, a->stride / sizeof(float),
&beta,
c->data.f, c->stride / sizeof(float));
luaT_pushudata(L, c, nerv_float_matrix_(tname));
return 1;
}
static int nerv_float_matrix_(sigmoid)(lua_State *L) {
Matrix *a = luaT_checkudata(L, 1, nerv_float_matrix_(tname));
Matrix *b = nerv_float_matrix_(new_)(a->nrow, a->ncol);
cuda_sigmoid(a, b);
luaT_pushudata(L, b, nerv_float_matrix_(tname));
return 1;
}
static int nerv_float_matrix_(softmax)(lua_State *L) {
Matrix *a = luaT_checkudata(L, 1, nerv_float_matrix_(tname));
Matrix *max = nerv_float_matrix_(new_)(a->nrow, 1);
Matrix *dno = nerv_float_matrix_(new_)(a->nrow, 1);
Matrix *b = nerv_float_matrix_(new_)(a->nrow, a->ncol);
cuda_colmax(a, max);
cuda_softmax_denominator(a, max, dno);
cuda_softmax_final(a, max, dno, b);
luaT_pushudata(L, b, nerv_float_matrix_(tname));
return 1;
}
static int nerv_float_matrix_(colsum)(lua_State *L) {
Matrix *a = luaT_checkudata(L, 1, nerv_float_matrix_(tname));
Matrix *b = nerv_float_matrix_(new_)(a->nrow, 1);
cuda_colsum(a, b);
luaT_pushudata(L, b, nerv_float_matrix_(tname));
return 1;
}
static int nerv_float_matrix_(colmax)(lua_State *L) {
Matrix *a = luaT_checkudata(L, 1, nerv_float_matrix_(tname));
Matrix *b = nerv_float_matrix_(new_)(a->nrow, 1);
cuda_colmax(a, b);
luaT_pushudata(L, b, nerv_float_matrix_(tname));
return 1;
}
static const luaL_Reg nerv_float_matrix_(extra_methods)[] = {
{"__add__", nerv_float_matrix_(add)},
{"__mul__", nerv_float_matrix_(mul)},
{"sigmoid", nerv_float_matrix_(sigmoid)},
{"softmax", nerv_float_matrix_(softmax)},
{"colsum", nerv_float_matrix_(colsum)},
{"colmax", nerv_float_matrix_(colmax)},
{NULL, NULL}
};
static void cuda_float_init(lua_State *L) {
luaN_append_methods(L, nerv_float_matrix_(extra_methods));
cublasCreate(&cublas_handle);
}
static void cuda_float_array_free(float *ptr) {
cudaFree(ptr);
}
static void cuda_float_array_alloc(float **dptr, size_t *stride,
long width, long height) {
cudaMallocPitch((void **)dptr, stride, width, height);
}
static float cuda_float_array_read(float *data, int idx) {
float res;
cudaMemcpy(&res, data + idx, sizeof(float), cudaMemcpyDeviceToHost);
return res;
}
static void cuda_float_array_write(float *data, int idx, float val) {
cudaMemcpy(data + idx, &val, sizeof(float), cudaMemcpyHostToDevice);
}
int nerv_float_matrix_(get_elem)(lua_State *L) {
return nerv_error_method_not_implemented(L);
}
int nerv_float_matrix_(set_elem)(lua_State *L) {
return nerv_error_method_not_implemented(L);
}
#include "generic/matrix.c"
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