Skip to content

Instantly share code, notes, and snippets.

View tanakamura's full-sized avatar

Takashi Nakamura tanakamura

57 followers · 2 following
View GitHub Profile
@tanakamura
tanakamura / gist:8749044
Created February 1, 2014 06:59
/*
* i7-4700MQ Win8.1 : 9533.579865clk
* i7-4700MQ Linux 3.11.4-201.fc19.x86_6 : 1815.603760
*/
#include <signal.h>
#include <setjmp.h>
#include <x86intrin.h>
#include <stdio.h>
@tanakamura
tanakamura / gist:8748818
Created February 1, 2014 06:45
/*
* i7-4700MQ Win8.1 : 9533.579865clk
*/
#include <windows.h>
#include <setjmp.h>
#define NUM (4096*8)
volatile int counter = 0;
jmp_buf jbuf;
@tanakamura
tanakamura / gist:7397691
Created November 10, 2013 12:31
__kernel void
hello(void)
{
}
@tanakamura
tanakamura / gist:7397685
Created November 10, 2013 12:31
#define __CL_ENABLE_EXCEPTIONS
#include <CL/cl.hpp>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/fcntl.h>
#include <iostream>
#include <sys/time.h>
#include <stdio.h>
@tanakamura
tanakamura / fast-printf.c
Last active December 27, 2015 08:29
fast-printf
#include <windows.h>
#include <stdio.h>
#include <ctype.h>
#ifdef _WIN32
#include <windows.h>
double
sec()
{
LARGE_INTEGER freq, v;
@tanakamura
tanakamura / printf2.c
Last active December 27, 2015 08:28
printf
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
FILE *log_file;
int write_total;
char buffer[1024];
#ifdef _WIN32
#include <windows.h>
@tanakamura
tanakamura / gist:7295694
Last active December 27, 2015 08:19
write throughput
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef _WIN32
#include <windows.h>
double
sec()
{
LARGE_INTEGER freq, v;
@tanakamura
tanakamura / gist:5884342
Last active December 19, 2015 02:38
#include <pmmintrin.h>
double ddotp2(double *u,
double *v,
int n)
{
int i;
__m128d x = _mm_setzero_pd();
for (i=0; i<n-1; i+=2) {
x = _mm_add_pd(x, _mm_mul_pd(_mm_loadu_pd(&u[i]),