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kernels.c
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kernels.c
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/********************************************************
* Kernels to be optimized for the CS:APP Performance Lab
********************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "defs.h"
/*
* ECE454 Students:
* Please fill in the following team struct
*/
team_t team = {
"LOL", /* Team name */
"Ryan Kang", /* First member full name */
"yiming.kang@mail.utoronto.ca", /* First member email address */
"Zexuan Wang", /* Second member full name (leave blank if none) */
"zexuan.wang@mail.utoronto.ca" /* Second member email addr (leave blank if none) */
};
/***************
* ROTATE KERNEL
***************/
/******************************************************
* Your different versions of the rotate kernel go here
******************************************************/
/*
* naive_rotate - The naive baseline version of rotate
*/
char naive_rotate_descr[] = "naive_rotate: Naive baseline implementation";
void naive_rotate(int dim, pixel *src, pixel *dst)
{
int i, j;
for (i = 0; i < dim; i++)
for (j = 0; j < dim; j++)
dst[RIDX(dim-1-j, i, dim)] = src[RIDX(i, j, dim)];
}
/*
* ECE 454 Students: Write your rotate functions here:
*/
/*
* rotate - Your current working version of rotate
* IMPORTANT: This is the version you will be graded on
*/
char rotate_descr[] = "rotate: Current working version - tileSize = 1024";
void rotate(int dim, pixel *src, pixel *dst) {
int tile_size_x, tile_size_y;
if (dim <= 1024) {
tile_size_x = 32;
tile_size_y = 2;
} else {
tile_size_x = 16;
tile_size_y = 2;
}
int i, j, x, y, i_limit, j_limit;
for (x=0; x<dim; x+=tile_size_x){
i_limit = (dim > x+tile_size_x) ? (x+tile_size_x) : dim;
for (y=0; y<dim; y+=tile_size_y){
j_limit = (dim > y+tile_size_y) ? (y+tile_size_y) : dim;
for (j = y; j < j_limit; j++){
for (i = x; i < i_limit; i++){
dst[RIDX(dim-1-j, i, dim)] = src[RIDX(i, j, dim)];
}
}
}
}
}
char rotate_three_descr[] = "tileSize = 512";
void attempt_three(int dim, pixel *src, pixel *dst) {
if (dim < 512)
return naive_rotate(dim, src, dst);
int tile_num = 512;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (j = 0; j < tile_size; j++)
for (i = 0; i < tile_size; i++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_four_descr[] = "tile with size 256";
void attempt_four(int dim, pixel *src, pixel *dst) {
if (dim < 256)
return naive_rotate(dim, src, dst);
int tile_num = 256;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_five_descr[] = "tile with size 128";
void attempt_five(int dim, pixel *src, pixel *dst) {
if (dim < 128)
return naive_rotate(dim, src, dst);
int tile_num = 128;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_six_descr[] = "tile with size 64";
void attempt_six(int dim, pixel *src, pixel *dst) {
if (dim % 64 != 0)
return naive_rotate(dim, src, dst);
int tile_num = 64;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_seven_descr[] = "tile with size 32";
void attempt_seven(int dim, pixel *src, pixel *dst) {
int tile_num = 32;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_eight_descr[] = "tile with size 16";
void attempt_eight(int dim, pixel *src, pixel *dst) {
int tile_num = 16;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_nine_descr[] = "tile with size 8";
void attempt_nine(int dim, pixel *src, pixel *dst) {
int tile_num = 8;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_ten_descr[] = "tile with size 4";
void attempt_ten(int dim, pixel *src, pixel *dst) {
int tile_num = 4;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
char rotate_eleven_descr[] = "tile with size 2";
void attempt_eleven(int dim, pixel *src, pixel *dst) {
int tile_num = 2;
int tile_size = dim/tile_num;
int i, j, x, y;
for (x=0; x<tile_num; x++){
int baseI = x*tile_size;
for (y=0; y<tile_num; y++){
int baseJ = y*tile_size;
for (i = 0; i < tile_size; i++)
for (j = 0; j < tile_size; j++)
dst[RIDX(dim-1-baseJ-j, baseI+i, dim)] = src[RIDX(baseI+i, baseJ+j, dim)];
}
}
}
/* second attempt */
char rotate_two_descr[] = "second attempt";
int logBase2(int dim){
int result = 1;
while (dim != 0) {
result++;
dim >>=1;
}
return result;
}
void attempt_two(int dim, pixel *src, pixel *dst)
{
}
/*********************************************************************
* register_rotate_functions - Register all of your different versions
* of the rotate kernel with the driver by calling the
* add_rotate_function() for each test function. When you run the
* driver program, it will test and report the performance of each
* registered test function.
*********************************************************************/
void register_rotate_functions()
{
add_rotate_function(&naive_rotate, naive_rotate_descr);
add_rotate_function(&rotate, rotate_descr);
/* add_rotate_function(&attempt_two, rotate_two_descr); */
add_rotate_function(&attempt_three, rotate_three_descr);
add_rotate_function(&attempt_four, rotate_four_descr);
add_rotate_function(&attempt_five, rotate_five_descr);
add_rotate_function(&attempt_six, rotate_six_descr);
add_rotate_function(&attempt_seven, rotate_seven_descr);
add_rotate_function(&attempt_eight, rotate_eight_descr);
add_rotate_function(&attempt_nine, rotate_nine_descr);
add_rotate_function(&attempt_ten, rotate_ten_descr);
add_rotate_function(&attempt_eleven, rotate_eleven_descr);
/* ... Register additional rotate functions here */
}