All the binaries used are on the pi_css5 program page, unless noted otherwise. Performance is time taken to calculate 1048576 (2^20) digits of π, recorded in seconds. Relative speed is number of times faster than the baseline machine, an HP Kayak XU running RedHat Linux 7.2. A very special thanks to all those of you who've sent in results, and by all means, send in more!
| Machine/OS/Processor Clock and Type/L2 Cache Size | Performance (in seconds) |
Relative speed | |
 |
HP Integrity RX1620/RedHat Linux AS 4.0/1600MHZ Itanium II/?MB | 5.61 | 13.55  |
|
Intel White Box/RedHat Linux AS 3.1/1400MHZ Itanium II/?MB | 6.02 | 12.63 |
|
Compaq Proliant DL560/RedHat Linux AS 4.0/3000MHZ Xeon/.5MB | 6.34 | 11.99 |
 |
Apple PowerMac G5/MacOS X 10.4.3/2500MHZ PowerPC 970/.5MB | 7.32 | 10.39  |
|
Apple PowerMac G5/MacOS X 10.4.3/2300MHZ PowerPC 970/.5MB | 8.30 | 9.16 |
|
Compaq Proliant DL560/RHEL 4.0/2200MHZ Opteron/.5MB | 8.38 | 9.07 |
 |
HP ZX6000/HP-UX 11.22/1000MHZ Itanium2/1.5MB | 8.61 | 8.82  |
|
HP C8000/HP-UX 11.11/1000MHZ PA8800/32MB | 8.74 | 8.70  |
|
HP RP3410/HP-UX 11.00/800MHZ PA8900/?MB | 9.33 | 8.15 |
|
HP ZX2000/HP-UX 11.22/900MHZ Itanium2/1.5MB | 9.79 | 7.77 |
|
Apple PowerMac G5/MacOS X 10.4.3/2000MHZ PowerPC 970/.5MB | 9.86 | 7.71 |
|
HP RP3410/HP-UX 11.00/800MHZ PA8800/?MB | 10.12 | 7.51 |
|
HP L3000/HP-UX 11.00/875MHZ PA8700/2.25MB | 11.91 | 6.38 |
|
HP RP2470/HP-UX 11i/750MHZ PA8700/2.25MB | 12.64 | 6.01 |
|
Apple PowerMac G5/MacOS X 10.2.8/1800MHZ PowerPC 970/.5MB | 12.68 | 6.00 |
|
HP RX4600/HP-UX 11.20/800MHZ Itanium/4MB | 14.54 | 5.23 |
|
HP RX4600/RedHat Linux 7.1.93/800MHZ Itanium/4MB | 16.57 | 4.59 |
 |
Compaq ES47/Tru64 5.1/1000 MHZ Alpha 21364/?MB | 16.58 | 4.58  |
|
Compaq ES45/Tru64 5.1/1000 MHZ Alpha 21264C/?MB | 17.92 | 4.24 |
|
Compaq ES40/Tru64 5.1B/833 MHZ Alpha 21264/?MB | 20.33 | 3.74 |
|
HP N4000/HP-UX 11.00/552MHZ PA8600/1.5MB | 20.49 | 3.71 |
|
Apple PowerMac G4/MacOS X 10.2/1250MHZ PowerPC 7455/2MB | 20.65 | 3.68 |
|
Compaq DS20L/Tru64 5.1B/833 MHZ Alpha 21264C/?MB | 21.88 | 3.47 |
|
HP N4000/HP-UX 11.00/440MHZ PA8500/1.5MB | 23.14 | 3.29 |
 |
Sun Blade 2000/Solaris 2.8/900MHZ UltraSPARC II/8MB | 23.37 | 3.25  |
|
Compaq Proliant DL360/Debian GNULinux 3.0/1400MHZ Pentium III Xeon/.5MB | 23.53 | 3.23 |
|
Apple PowerMac G4/MacOS X 10.1.5/1000MHZ PowerPC 7455/2MB | 23.94 | 3.18 |
|
Compaq ES40/Tru64 5.1B/667 MHZ Alpha 21264/?MB | 25.53 | 2.98 |
|
Apple PowerMac G4/MacOS X 10.1.3/933MHZ PowerPC 7455/2MB | 25.73 | 2.95 |
|
Dell Precision/RedHat Linux 7.2/933MHZ Pentium III/0.25MB | 28.45 | 2.67 |
|
Sun Blade 1000/Solaris 2.8/750MHZ UltraSPARC II/8MB | 28.46 | 2.67 |
|
Compaq Proliant 8500/Debian GNULinux 2.2/700MHZ Pentium III Xeon/2MB | 28.77 | 2.64 |
|
Apple PowerMac G4/MacOS X 10.1.2/867MHZ PowerPC 7450/2MB | 31.31 | 2.43 |
|
Dell Precision/RedHat Linux 7.2/733MHZ Pentium III/0.25MB | 32.52 | 2.34 |
|
Sun Ultra60/Solaris 2.7/450MHZ UltraSPARC II/4MB | 36.01 | 2.11 |
|
HP C240/HP-UX 11.00/240MHZ PA8200/2MB | 39.49 | 1.93 |
|
Apple PowerBook G4/MacOS X 10.2/667MHZ PowerPC 7455/2MB | 39.91 | 1.90 |
|
Compaq DS20/Suse Linux 7.3/466MHZ Alpha 21264/2MB | 41.26 | 1.84 |
|
Apple eMac G4/MacOS X 10.2/700MHZ PowerPC 7455/.25MB | 41.44 | 1.83 |
|
Sun E5500/Solaris 2.7/400MHZ UltraSPARC II/4MB | 41.89 | 1.81 |
|
HP K580/HP-UX 11.00/200MHZ PA8000/2MB | 43.94 | 1.73 |
|
Apple PowerBook G4/MacOS X 10.1.3/667MHZ PowerPC 7450/.25MB | 44.45 | 1.71 |
|
Apple PowerMac G4/MacOS 9.1/450MHZ PowerPC 7400/1MB | 46.04 | 1.65 |
|
Sun Ultra60/Solaris 2.7/360MHZ UltraSPARC II/4MB | 46.24 | 1.64 |
|
DEC AS1200/Digial Unix 4.0g/400MHZ Alpha 21164/8MB | 47.86 | 1.58 |
|
Apple PowerBook G4/MacOS X 10.1.2/400MHZ PowerPC 7410/1MB | 49.66 | 1.53 |
|
Compaq Proliant 4500/Suse Linux 7.1/500MHZ Pentium III Xeon/1MB | 52.83 | 1.44 |
|
Compaq Proliant 4500/RedHat Linux 7.2/450MHZ Pentium II Xeon/1MB | 58.19 | 1.31 |
|
Sun Ultra2/Solaris 2.6/300MHZ UltraSPARC II/2MB | 67.70 | 1.12 |
|
Apple iMac/MacOS 9.1/400MHZ PowerPC 750/.5MB | 69.36 | 1.10 |
|
HP K460/HP-UX 10.20/180MHZ PA8000/2MB | 71.92 | 1.06 |
|
Apple PowerMac G3/MacOS 8.1/333MHZ PowerPC 750/1MB | 76.00 | 1.00 |
|
HP Kayak XU/RedHat Linux 7.2/333MHZ Pentium II/0.5MB | 76.02 | 1.00 |
|
Apple iMac G3/MacoOS 9.1/333MHZ PowerPC 750/.5MB | 78.15 | 0.97 |
 |
HP Kayak XU/Windows NT 4.0/300MHZ Pentium II/0.5MB | 82.34 | 0.92 |
|
Apple PowerBook 5300ce/MacOS 8.1/117MHZ PowerPC 603e/0MB | 505.92 | 0.15 |
The below executables which produced the above results are available on the pi_css5 program page.
Windows: built with Intel C/C++
5.0 and -O2 -G6 optimization flags.
Macintosh MacOS 7-8.6: built with MrC 5.0d1
-opt speed,unroll,unswitch flags. MacOS 9 & X: built with
Metrowerks CodeWarrior Pro 7.2 with level 4 speed
optimizations.
Linux x86: built with Intel C/C++ 5.01 and -O2
-G6 flags. Linux IA64: built with Intel C/C++ 5.01 with -O3
-{prof_gen,prof_use} flags. Linux Alpha: built with Compaq C
6.4.9 with -O5 -fast -arch {generic,ev6}.
HP-UX
PA-RISC: built with HP CC A.10.32.3 and -fast +Odataprefetch
{+DA1.1,+DA2.0}. HP-UX IA64: built with HP aC++ and -fast
+Odataprefetch
Solaris: built with Sun CC 5.3 and -xO5
-fast
Digital Unix: built with DEC cc and -O5 -fast
-arch {generic,ev6}
