Files
vortex/hw/dpi/float_dpi.cpp
Hansung Kim 5a95eba1f5 tensor: Clear c_*_tile before compute
This didn't really cause any problem, but just to be sure.
2024-05-25 19:54:44 -07:00

581 lines
20 KiB
C++

// Copyright © 2019-2023
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <math.h>
#include <unordered_map>
#include <vector>
#include <mutex>
#include <iostream>
#include <rvfloats.h>
#include <util.h>
#include "svdpi.h"
// #include "verilated_vpi.h"
#include "VX_config.h"
#include <bit>
#include "half.h"
extern "C" {
void dpi_fadd(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fsub(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fmul(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fmadd(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fmsub(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fnmadd(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fnmsub(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fdiv(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_fsqrt(bool enable, int dst_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_ftoi(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_ftou(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_itof(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_utof(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags);
void dpi_f2f(bool enable, int dst_fmt, int64_t a, int64_t* result);
void dpi_fclss(bool enable, int dst_fmt, int64_t a, int64_t* result);
void dpi_fsgnj(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result);
void dpi_fsgnjn(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result);
void dpi_fsgnjx(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result);
void dpi_flt(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags);
void dpi_fle(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags);
void dpi_feq(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags);
void dpi_fmin(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags);
void dpi_fmax(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags);
void dpi_hmma(bool enable, const svBitVecVal* A_tile, const svBitVecVal* B_tile, const svBitVecVal* C_tile, svBitVecVal* D_tile);
void dpi_print_results(int wid, int octet, const svBitVecVal* A_tile, const svBitVecVal* B_tile, const svBitVecVal* C_tile, const svBitVecVal* D_tile);
}
inline uint64_t nan_box(uint32_t value) {
#ifdef FPU_RV64F
return value | 0xffffffff00000000;
#else
return value;
#endif
}
inline bool is_nan_boxed(uint64_t value) {
#ifdef FPU_RV64F
return (uint32_t(value >> 32) == 0xffffffff);
#else
__unused (value);
return true;
#endif
}
inline int64_t check_boxing(int64_t a) {
if (!is_nan_boxed(a)) {
return nan_box(0x7fc00000); // NaN
}
return a;
}
void dpi_fadd(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fadd_d(a, b, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fadd_s(check_boxing(a), check_boxing(b), (*frm & 0x7), fflags));
}
}
void dpi_fsub(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fsub_d(a, b, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fsub_s(check_boxing(a), check_boxing(b), (*frm & 0x7), fflags));
}
}
void dpi_fmul(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fmul_d(a, b, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fmul_s(check_boxing(a), check_boxing(b), (*frm & 0x7), fflags));
}
}
void dpi_fmadd(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fmadd_d(a, b, c, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fmadd_s(check_boxing(a), check_boxing(b), check_boxing(c), (*frm & 0x7), fflags));
}
}
void dpi_fmsub(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fmsub_d(a, b, c, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fmsub_s(check_boxing(a), check_boxing(b), check_boxing(c), (*frm & 0x7), fflags));
}
}
void dpi_fnmadd(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fnmadd_d(a, b, c, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fnmadd_s(check_boxing(a), check_boxing(b), check_boxing(c), (*frm & 0x7), fflags));
}
}
void dpi_fnmsub(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t c, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fnmsub_d(a, b, c, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fnmsub_s(check_boxing(a), check_boxing(b), check_boxing(c), (*frm & 0x7), fflags));
}
}
void dpi_fdiv(bool enable, int dst_fmt, int64_t a, int64_t b, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fdiv_d(a, b, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fdiv_s(check_boxing(a), check_boxing(b), (*frm & 0x7), fflags));
}
}
void dpi_fsqrt(bool enable, int dst_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fsqrt_d(a, (*frm & 0x7), fflags);
} else {
*result = nan_box(rv_fsqrt_s(check_boxing(a), (*frm & 0x7), fflags));
}
}
void dpi_ftoi(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
if (src_fmt) {
*result = rv_ftol_d(a, (*frm & 0x7), fflags);
} else {
*result = rv_ftol_s(check_boxing(a), (*frm & 0x7), fflags);
}
} else {
if (src_fmt) {
*result = sext<uint64_t>(rv_ftoi_d(a, (*frm & 0x7), fflags), 32);
} else {
*result = sext<uint64_t>(rv_ftoi_s(check_boxing(a), (*frm & 0x7), fflags), 32);
}
}
}
void dpi_ftou(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
if (src_fmt) {
*result = rv_ftolu_d(a, (*frm & 0x7), fflags);
} else {
*result = rv_ftolu_s(check_boxing(a), (*frm & 0x7), fflags);
}
} else {
if (src_fmt) {
*result = sext<uint64_t>(rv_ftou_d(a, (*frm & 0x7), fflags), 32);
} else {
*result = sext<uint64_t>(rv_ftou_s(check_boxing(a), (*frm & 0x7), fflags), 32);
}
}
}
void dpi_itof(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
if (src_fmt) {
*result = rv_ltof_d(a, (*frm & 0x7), fflags);
} else {
*result = rv_itof_d(a, (*frm & 0x7), fflags);
}
} else {
if (src_fmt) {
*result = nan_box(rv_ltof_s(a, (*frm & 0x7), fflags));
} else {
*result = nan_box(rv_itof_s(a, (*frm & 0x7), fflags));
}
}
}
void dpi_utof(bool enable, int dst_fmt, int src_fmt, int64_t a, const svBitVecVal* frm, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
if (src_fmt) {
*result = rv_lutof_d(a, (*frm & 0x7), fflags);
} else {
*result = rv_utof_d(a, (*frm & 0x7), fflags);
}
} else {
if (src_fmt) {
*result = nan_box(rv_lutof_s(a, (*frm & 0x7), fflags));
} else {
*result = nan_box(rv_utof_s(a, (*frm & 0x7), fflags));
}
}
}
void dpi_f2f(bool enable, int dst_fmt, int64_t a, int64_t* result) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_ftod((int32_t)check_boxing(a));
} else {
*result = nan_box(rv_dtof(a));
}
}
void dpi_fclss(bool enable, int dst_fmt, int64_t a, int64_t* result) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fclss_d(a);
} else {
*result = rv_fclss_s(check_boxing(a));
}
}
void dpi_fsgnj(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fsgnj_d(a, b);
} else {
*result = nan_box(rv_fsgnj_s(check_boxing(a), check_boxing(b)));
}
}
void dpi_fsgnjn(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fsgnjn_d(a, b);
} else {
*result = nan_box(rv_fsgnjn_s(check_boxing(a), check_boxing(b)));
}
}
void dpi_fsgnjx(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fsgnjx_d(a, b);
} else {
*result = nan_box(rv_fsgnjx_s(check_boxing(a), check_boxing(b)));
}
}
void dpi_flt(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_flt_d(a, b, fflags);
} else {
*result = rv_flt_s(check_boxing(a), check_boxing(b), fflags);
}
}
void dpi_fle(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fle_d(a, b, fflags);
} else {
*result = rv_fle_s(check_boxing(a), check_boxing(b), fflags);
}
}
void dpi_feq(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_feq_d(a, b, fflags);
} else {
*result = rv_feq_s(check_boxing(a), check_boxing(b), fflags);
}
}
void dpi_fmin(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fmin_d(a, b, fflags);
} else {
*result = nan_box(rv_fmin_s(check_boxing(a), check_boxing(b), fflags));
}
}
void dpi_fmax(bool enable, int dst_fmt, int64_t a, int64_t b, int64_t* result, svBitVecVal* fflags) {
if (!enable)
return;
if (dst_fmt) {
*result = rv_fmax_d(a, b, fflags);
} else {
*result = nan_box(rv_fmax_s(check_boxing(a), check_boxing(b), fflags));
}
}
// A is M * K, B is K * M, C is M * M, D is M * M
#define M 4
#define K 2 // FIXME: 4x4x1 / cycle / octet!
// all row major
float c_A_tile[M][K];
float c_B_tile[K][M];
float c_C_tile[M][M];
float c_D_tile[M][M];
// code assumes that svBitVecVal is basically a uint32_t
static_assert(sizeof(svBitVecVal) == 4);
void clear_float_array(float* c_tile, int rows, int cols) {
for (int i = 0; i < rows; i += 1) {
for (int j = 0; j < cols; j += 1) {
int index = i * cols + j;
c_tile[index] = 0.0f;
}
}
}
void fill_float_array(const svBitVecVal* sv_tile, float* c_tile, int rows, int cols) {
for (int i = 0; i < rows; i += 1) {
for (int j = 0; j < cols; j += 1) {
int index = i * cols + j;
svBitVecVal sv_val = sv_tile[index];
uint32_t c_val = sv_val;
float c_float;
memcpy(&c_float, &c_val, sizeof(c_float));
c_tile[index] = c_float;
// std::cout << c_float << " ";
}
// std::cout << std::endl;
}
}
void write_float_array(svBitVecVal* sv_tile, float* c_tile, int rows, int cols) {
for (int i = 0; i < rows; i += 1) {
for (int j = 0; j < cols; j += 1) {
int index = i * cols + j;
svBitVecVal* sv_val = &sv_tile[index];
float c_float = c_tile[index];
memcpy(sv_val, &c_float, sizeof(c_float));
// std::cout << c_float << " ";
}
// std::cout << std::endl;
}
}
void dpi_hmma(bool enable, const svBitVecVal* A_tile, const svBitVecVal* B_tile, const svBitVecVal* C_tile, svBitVecVal* D_tile) {
if (!enable) {
return;
}
clear_float_array(&c_A_tile[0][0], M, K);
clear_float_array(&c_B_tile[0][0], K, M);
clear_float_array(&c_C_tile[0][0], M, M);
clear_float_array(&c_D_tile[0][0], M, M);
// std::cout << "A: " << std::endl;
fill_float_array(A_tile, &c_A_tile[0][0], M, K);
// std::cout << "B: " << std::endl;
fill_float_array(B_tile, &c_B_tile[0][0], K, M);
// std::cout << "C: " << std::endl;
fill_float_array(C_tile, &c_C_tile[0][0], M, M);
for (int i = 0; i < M; i += 1) {
for (int j = 0; j < M; j += 1) {
float accum = c_C_tile[i][j];
for (int k = 0; k < K; k += 1) {
accum += c_A_tile[i][k] * c_B_tile[k][j];
}
c_D_tile[i][j] = accum;
}
}
write_float_array(D_tile, &c_D_tile[0][0], M, M);
}
// 1 copy per warp
float A_tile_full[4][16][8];
float B_tile_full[4][8][16];
float C_tile_full[4][16][16];
float D_tile_full[4][16][16];
int steps[4];
void print_array(float* array, int rows, int cols) {
for (int i = 0; i < rows; i += 1) {
for (int j = 0; j < cols; j += 1) {
std::cout << array[i*cols+j] << " ";
}
std::cout << "\n";
}
std::cout << std::endl;
}
void dpi_print_results(int wid, int octet, const svBitVecVal* A_tile, const svBitVecVal* B_tile, const svBitVecVal* C_tile, const svBitVecVal* D_tile) {
// std::cout << "A: " << std::endl;
fill_float_array(A_tile, &c_A_tile[0][0], M, K);
// std::cout << "B: " << std::endl;
fill_float_array(B_tile, &c_B_tile[0][0], K, M);
// std::cout << "C: " << std::endl;
fill_float_array(C_tile, &c_C_tile[0][0], M, M);
// for some reason this still holds onto old value? very strange
// std::cout << "D: " << std::endl;
fill_float_array(D_tile, &c_D_tile[0][0], M, M);
int octet_row_offset;
int octet_col_offset;
switch(octet) {
case 0:
octet_row_offset = 0;
octet_col_offset = 0;
break;
case 1:
octet_row_offset = 8;
octet_col_offset = 0;
break;
case 2:
octet_row_offset = 0;
octet_col_offset = 8;
break;
case 3:
octet_row_offset = 8;
octet_col_offset = 8;
break;
}
int step_row_offset;
int step_col_offset;
int step = (steps[wid] % 16) / 4;
int set = (steps[wid] / 16);
switch(step) {
case 0:
step_row_offset = 0;
step_col_offset = 0;
break;
case 1:
step_row_offset = 2;
step_col_offset = 0;
break;
case 2:
step_row_offset = 0;
step_col_offset = 4;
break;
case 3:
step_row_offset = 2;
step_col_offset = 4;
break;
}
if (steps[0] >= 48) {
// std::cout << "octet " << octet << " step " << steps[0] << "\n";
// print_array(&c_D_tile[0][0], 4, 4);
}
D_tile_full[wid][octet_row_offset+step_row_offset+0][octet_col_offset+step_col_offset+0] = c_D_tile[0][0];
D_tile_full[wid][octet_row_offset+step_row_offset+0][octet_col_offset+step_col_offset+1] = c_D_tile[0][1];
D_tile_full[wid][octet_row_offset+step_row_offset+0][octet_col_offset+step_col_offset+2] = c_D_tile[0][2];
D_tile_full[wid][octet_row_offset+step_row_offset+0][octet_col_offset+step_col_offset+3] = c_D_tile[0][3];
D_tile_full[wid][octet_row_offset+step_row_offset+1][octet_col_offset+step_col_offset+0] = c_D_tile[1][0];
D_tile_full[wid][octet_row_offset+step_row_offset+1][octet_col_offset+step_col_offset+1] = c_D_tile[1][1];
D_tile_full[wid][octet_row_offset+step_row_offset+1][octet_col_offset+step_col_offset+2] = c_D_tile[1][2];
D_tile_full[wid][octet_row_offset+step_row_offset+1][octet_col_offset+step_col_offset+3] = c_D_tile[1][3];
D_tile_full[wid][octet_row_offset+step_row_offset+4][octet_col_offset+step_col_offset+0] = c_D_tile[2][0];
D_tile_full[wid][octet_row_offset+step_row_offset+4][octet_col_offset+step_col_offset+1] = c_D_tile[2][1];
D_tile_full[wid][octet_row_offset+step_row_offset+4][octet_col_offset+step_col_offset+2] = c_D_tile[2][2];
D_tile_full[wid][octet_row_offset+step_row_offset+4][octet_col_offset+step_col_offset+3] = c_D_tile[2][3];
D_tile_full[wid][octet_row_offset+step_row_offset+5][octet_col_offset+step_col_offset+0] = c_D_tile[3][0];
D_tile_full[wid][octet_row_offset+step_row_offset+5][octet_col_offset+step_col_offset+1] = c_D_tile[3][1];
D_tile_full[wid][octet_row_offset+step_row_offset+5][octet_col_offset+step_col_offset+2] = c_D_tile[3][2];
D_tile_full[wid][octet_row_offset+step_row_offset+5][octet_col_offset+step_col_offset+3] = c_D_tile[3][3];
if (octet == 0 || octet == 1) {
octet_row_offset = octet * 8;
if (step == 0) {
step_row_offset = 0;
}
if (step == 1) {
step_row_offset = 2;
}
if (step == 0 || step == 1) {
A_tile_full[wid][octet_row_offset+step_row_offset+0][set*2+0] = c_A_tile[0][0];
A_tile_full[wid][octet_row_offset+step_row_offset+0][set*2+1] = c_A_tile[0][1];
A_tile_full[wid][octet_row_offset+step_row_offset+1][set*2+0] = c_A_tile[1][0];
A_tile_full[wid][octet_row_offset+step_row_offset+1][set*2+1] = c_A_tile[1][1];
A_tile_full[wid][octet_row_offset+step_row_offset+4][set*2+0] = c_A_tile[2][0];
A_tile_full[wid][octet_row_offset+step_row_offset+4][set*2+1] = c_A_tile[2][1];
A_tile_full[wid][octet_row_offset+step_row_offset+5][set*2+0] = c_A_tile[3][0];
A_tile_full[wid][octet_row_offset+step_row_offset+5][set*2+1] = c_A_tile[3][1];
}
}
if (octet == 0 || octet == 2) {
octet_col_offset = octet * 4;
if (step == 0) {
step_col_offset = 0;
}
else if (step == 2) {
step_col_offset = 4;
}
if (step == 0 || step == 2) {
B_tile_full[wid][set*2+0][octet_col_offset+step_col_offset+0] = c_B_tile[0][0];
B_tile_full[wid][set*2+0][octet_col_offset+step_col_offset+1] = c_B_tile[0][1];
B_tile_full[wid][set*2+0][octet_col_offset+step_col_offset+2] = c_B_tile[0][2];
B_tile_full[wid][set*2+0][octet_col_offset+step_col_offset+3] = c_B_tile[0][3];
B_tile_full[wid][set*2+1][octet_col_offset+step_col_offset+0] = c_B_tile[1][0];
B_tile_full[wid][set*2+1][octet_col_offset+step_col_offset+1] = c_B_tile[1][1];
B_tile_full[wid][set*2+1][octet_col_offset+step_col_offset+2] = c_B_tile[1][2];
B_tile_full[wid][set*2+1][octet_col_offset+step_col_offset+3] = c_B_tile[1][3];
}
}
steps[wid] += 1;
if (steps[wid] % 32 == 0) {
steps[wid] = 0;
std::cout << "warp " << wid << " finished wmma\n";
std::cout << "A tile" << "\n";
print_array(&A_tile_full[wid][0][0], 16, 8);
std::cout << "B tile" << "\n";
print_array(&B_tile_full[wid][0][0], 8, 16);
// std::cout << "C tile" << "\n";
// print_array(&C_tile_full[wid][0][0], 16, 16);
std::cout << "D tile" << "\n";
print_array(&D_tile_full[wid][0][0], 16, 16);
}
}