How do you compare?

I wrote a hackish benchmark program so you can compare your computers to my aging little machine



here's the code

Code:

#include <iostream>
#include <cstring>
#include <ctime>

using namespace std;
int sl;

void inline swt(unsigned char *tp, int x, int y)
{
	char tmp;
	tmp = tp[x];
	tp[x] = tp[y];
	tp[y] = tmp;
}

void inline perm(unsigned char *tp, int pl)
{
	if (pl == sl - 1) {
	//	cout << tp << endl;
	}
	for (int nc = pl; nc < sl; nc++) {
	        swt(tp, pl, nc);
		perm(tp, pl + 1);
	}
}

int main(void)
{
	unsigned char str[] = "nosebleeding";
	double brispeed = 26.8300F;
	double bripercent = brispeed / 100;
	double yourspeed;
	double yourpercent;
	clock_t start, end;

	sl = strlen((const char*)str);
	start = clock();
	perm(str, 0);
	end = clock();

	yourspeed = (double)(end - start) / (double)CLOCKS_PER_SEC;
	yourpercent = yourspeed / bripercent;
	cout << "The program took "
	     << yourspeed
	     << " seconds. That's " << yourpercent << "% of the time "
	     << "Brian's computer took." << endl;

	return 0;
}

note: the lower the percentage the better.

my output:

Code:

bash-2.05b$ ./test
The program took 26.8216 seconds. That's 99.9687% of the time Brian's computer
took.

Code:

Specs:
1.00GHz AMD Athlon
512MB RAM
FreeBSD 4.9
GCC 3.3.3

this will be wildly inaccurate due to compiler optimisations and such, but it's just for fun.

Mine does nothing but show up as a black box for a couple minutes and nothing happens...

Originally posted by ZakkWylde969
Mine does nothing but show up as a black box for a couple minutes and nothing happens...

hehe. maybe you should leave it on overnight

Mine took 50.42 seconds (187.942% of your time)

My specs:

Code:

800mhz Intel Pentium III
256 RAM
Win 98
Whatever version of GCC Dev-C++ uses...

Oh yeah, and I was wondering about this:

Code:

unsigned char str[] = "nosebleeding";

Is there for...

my computer isn't THAT slow!

The program took 19.484 seconds. Thats 72.6202% of the time Brian's computer took.
Fully optimized in Dev C++
athlon xp 1900+
360 ddr pc2100

Do I win a prize?

The program took 16.694 seconds. That's 642.2214% of the time Brian's computer took.

Pentium 4 Mobile at 2.2 GHz
384-MB RAM
Windows XP Professional
Visual C++ 6.0, Standard Edition (i.e., no optimization)

The program took 17.755 seconds. That's 66.1759% of the time Brian's computer took.

1.9 GHz, 256 mb RD800 RAM, WinXP Home, MSVC6 Pro on release mode, no special optimizations turned on (I forgot how)

Originally posted by JaWiB

Oh yeah, and I was wondering about this:

Code:

unsigned char str[] = "nosebleeding";

Is there for...

The program finds all possible combinations the letters of the string "nosebleeding" can be in. (try uncommenting the cout << line)

Ohh lol, I just glanced at your program at first and didn't really read it and thought "Why would he have a string like that there?"
Stupid me

mine takes 18 seconds when i remove one letter from the end of the string... when i leave it like it is i just get impatient and close it.

my desktop took a solid minute and its a p4 2.8 with 1gig ram and MSVC++.NET, and my laptop i never even finish, and its a p4 mobile 2.0 with 512mb ram.

hmm......