/usr/bin/time sh -c 'dd if=/dev/zero bs=1M count=1000 | bzip2 -9 > /dev/null'

mein AthlonXP: (32bit)
  AMD Athlon(tm) XP processor 1700+
  stepping        : 2
  cpu MHz         : 1466.762
  cache size      : 256 KB
  85.36user 3.51system 1:33.56elapsed 94%CPU (0avgtext+0avgdata 0maxresident)k

Macgyver.quantum: (64bit)
  AMD Athlon(tm) 64 Processor 3000+
  stepping        : 0
  cpu MHz         : 1800.000
  cache size      : 512 KB
  43.11user 1.22system 0:44.36elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k

CIP-Pool: (32bit)
  Intel(R) Pentium(R) 4 CPU 2.40GHz
  stepping        : 9
  cpu MHz         : 2394.048
  cache size      : 512 KB
  42.47user 2.88system 0:44.32elapsed 102%CPU (0avgtext+0avgdata 0maxresident)k

Einstein: (32bit)
  Intel(R) Pentium(R) 4 CPU 2.60GHz
  stepping        : 9
  cpu MHz         : 2600.260
  cache size      : 512 KB
  42.07user 1.62system 0:42.78elapsed 102%CPU (0avgtext+0avgdata 0maxresident)k

Pepe@matha2: (32bit)
  AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
  cpu MHz         : 2000.000):
  39.32user 2.35system 0:41.17elapsed 101%CPU

Pepe@cip90: (32bit)
  2x Dual-Core AMD Opteron(tm) Processor 2214
  cpu MHz         : 2211.437
  36.97user 3.17system 0:38.49elapsed 104%CPU

Karl@IFI(plattspitzen): (32bit)
  AMD Athlon(tm) 64 X2 Dual Core Processor 5000+
  stepping        : 3
  cpu MHz         : 2600.000
  cache size      : 512 KB
  31.96user 2.52system 0:34.19elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
  
Pepe@math0t: (32bit)
  AMD Opteron(tm) Processor 250 x 2
  cpu MHz         : 2391.855
  30.44user 4.94system 0:34.94elapsed 101%CPU
  
Pepe@math1h: (32bit)
  Intel(R) Core(TM)2 Duo CPU  E4500  @ 2.20GHz
  cpu MHz         : 2194MHz
  27.35user 1.14system 0:28.52elapsed 99%CPU

Karl@Home (32bit) [fixme: frequency scaling und keine Widerholung!]
  Intel(R) Core(TM)2 CPU 6600  @ 2.40GHz
  stepping        : 6
  cpu MHz         : 2400.000
  cache size      : 4096 KB
  25.11user 1.12system 0:26.06elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k


----------------------------------------------------------------------

Pepe@math1h: (32bit, gcc-3.3.5)
  gcc apfel.c -march=nocona -O3 -o apfel -lm -ffast-math
  /usr/bin/time ./apfel
  sum=103166996
  3.22user 0.00system 0:03.23elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k

Karl@karlos: (32bit gcc-4.2, 4.3)
  gcc -O3 -march=athlon-xp apfel.c -o apfel -lm 
  /usr/bin/time ./apfel
  sum=103166996
  2.98user 0.00system 0:02.98elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k 

mein AthlonXP: (32bit, gcc-3.4.6)
  gcc -O3 -march=athlon-xp -ffast-math apfel.c -o apfel -lm
  /usr/bin/time ./apfel
  sum=103166996
  2.68user 0.01system 0:02.76elapsed 97%CPU (0avgtext+0avgdata 0maxresident)k
  gcc-4.2 bringt nur 3.19. 

Macgyver: (64bit, gcc-4.1.0)
  gcc -O3 -march=athlon64 -ffast-math -m32 apfel.c -o apfel -lm
  /usr/bin/time ./apfel
  sum=103166996
  2.16user 0.00system 0:02.16elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
  
  gcc -O3 -march=athlon64 -ffast-math -m64 apfel.c -o apfel -lm
  /usr/bin/time ./apfel
  sum=103260671
  1.98user 0.00system 0:01.98elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k

CIP.physik: (32bit, gcc-4.2.1, )
  gcc -O3 -march=pentium4 -ffast-math apfel.c -o apfel -lm
  /usr/bin/time ./apfel
  sum=103167055
  1.89user 0.00system 0:01.89elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
  
  ACHTUNG: 2 Prozesse brauchen 6.67, also 3.3 pro Prozess wenn parallel!
  HT skaliert scheiße!

Pepe@cip90: (32bit)
  gcc -march=opteron -ffast-math -O3 apfel.c
  /usr/bin/time ./apfel
  sum=103166996
  1.75user 0.00system 0:01.75elapsed 100%CPU

plattspitzen.cip.ifi: (32bit, gcc-4.1.2, skalierung 100% bei 1 Procs)
  gcc -O3 -march=athlon64 -ffast-math apfel.c -o apfel -lm
  /usr/bin/time ./apfel
  sum=103166996
  1.49user 0.00system 0:01.49elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k

  gcc -O3 -march=athlon64 -ffast-math -mfpmath=sse -msse3 apfel.c -o apfel -lm
  /usr/bin/time ./apfel
  sum=103260671  (OOPS!!)
  1.36user 0.00system 0:01.37elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k

-------------------------------------------------------------------------------

width=height=3000, maxit=500:

plattspitzen.cip.ifi:
  6.98user 0.00system 0:07.02elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k

CIP Physik:
  8.87user 0.00system 0:08.87elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k

Karl Core2:
  14.56 / 13.7 

----------------<apfel.c>-------------------


#include <stdio.h>
#include <math.h>

int main()
{
	int width=1000;
	int height=1000;
	int px,py;
	
	double bailout=2.0;
	double a0=-2.5,b0=-1.5;
	double as=5,bs=3;
	int maxit=1000;
	
	int print=0;
	long long sum=0;
	
	for(py=0; py<height; py++)
	{
		for(px=0; px<width; px++)
		{
			double a = a0 + as/width*px;
			double b = b0 + bs/height*py;
			double x=0.0,y=0.0;
			int i;
			for(i=0; i<maxit; i++)
			{
				double xx = x*x - y*y + a;
				y = 2.0*x*y + b;
				x = xx;
				if( sqrt(x*x + y*y) > bailout )  break;
			}
			if(print)
			{
				if(i>=maxit-1)
				{  printf("#");  }
				else
				{  printf(" ");  }
			}
			sum+=i;
		}
		if(print) printf("\n");
	}
	
	printf("sum=%lld\n",sum);
	
	return(0);
}
------------------<Makefile>---------------
all:
	gcc -O3 -march= -ffast-math apfel.c -o apfel -lm
	/usr/bin/time ./apfel
	/usr/bin/time ./apfel