y-cruncher : El software utilizado para romper el record de cálculo de decimales de pi
El pasado día 2 de agosto el ingeniero informático Shigeru Kondo y el estudiante Alexander J. Yee han conseguido batir el récord de decimales del número 
Buscando por la red un poco, encontre la pagina oficial del programador Alexander J. Yee, desde la cual es posible descargar el software programado con el fin de calcular el mayor numero de decimales de PI
Aqui les dejo un poco de Informacion[EN]:
y-cruncher is the first efficient and publicly available Pi-calculator that can sustain a near 100% cpu load on multi-core computers.
There are other multi-threaded Pi-programs that can achieve high cpu usage, but few of them can sustain it through an entire Pi computation.
Features:
- Computes Pi and other constants.
- Capable of computing trillions of digits of Pi (among other constants).
- Faster than PiFast 4.3 and QuickPi 4.5 when two or more cores are present.
- Two algorithms are available for each major constant. One for computation and one for verification. (great for stress-testing)
- Extremely efficient even for large computations (> 1 billion digits).
- Swap Space management for large computations that require more memory than there is available.
- Multi-Threaded – Multi-threading can be used to fully utilize modern multi-core processors without significantly increasing memory usage.
For large computations, it scales almost linearly with the # of cores. - Multi-Hard Drive – Multiple hard drives can be used for faster disk swapping. (scales linearly – as fast as hardware Raid 0, with no limit to the # of drives)
- Semi-Fault Tolerant – Able to detect and correct for minor errors that may be caused by hardware instability or software bugs.
Aside from computing π and other constants, y-cruncher is great for stress testing 64-bit systems with lots of ram.
- System Requirements:
- Windows XP or Windows Server 2000 or later.
- Users running Windows Vista or earlier may need to install one of the following updates:Microsoft C++ 2008 Redistributable Package (x86)
Microsoft C++ 2008 Redistributable Package (x64)
All times in seconds.
All benchmarks were done using the fastest binary with the fastest achieved settings for the system they were run on.
v0.5.3 and v0.5.4 are exactly the same speed. So results are directly comparable.
| Number of Digits | Core 2 Quad (8 MB cache) 2.4 GHz |
Phenom II X4 3.2 GHz1 |
Core i7 2.67 GHz2 |
Core i7 4.0 GHz3 |
4 x Opteron (Barcelona) 2.31 GHz4 |
2 x Xeon (Harpertown) 3.2 GHz |
2 x Xeon (Westmere-EP) 3.33 GHz5 |
| v0.5.3 | v0.5.4 | v0.5.4 | v0.5.4 | v0.5.3 | v0.5.4 | v0.5.3 | |
| 1,000,000 | 0.566 | 0.390 | 0.259 | 0.353 | |||
| 10,000,000 | 5.286 | 3.667 | 2.466 | 3.371 | |||
| 100,000,000 | 68.95 | 43.60 | 29.53 | 35.09 | 30.81 | 16.29 | |
| 1,000,000,000 | 990.0 | 619.4 | 424.3 | 468.1 | 395.9 | 202.5 | |
| 10,000,000,000 | 5,339 | 2,721 |
1This was actually a 2.8 GHz Phenom II X3. It was unlocked to 4 cores and then overclocked to 3.2 GHz. Credit to Raymond Chan.
2Intel Turbo Boost Technology increases actual operating frequency to 2.8 GHz.
3Overclocked from 2.67 GHz. Actual operating frequency after Turbo Boost is 4.2 GHz.
4Credit to skycrane from XtremeSystems.
5Intel Turbo Boost Technology increases actual operating frequency to 3.46 GHz. Credit to Shigeru Kondo.
Click to see benchmarks of older versions.
Number of Digits Core 2 Duo
(Merom)
2.0 GHzCore 2 Quad
(8 MB cache)
2.4 GHzPhenom II X4
3.2 GHz1Core i7
2.67 GHz2Core i7
4.0 GHz32 x Xeon
(Harpertown)
3.2 GHz2 x Xeon
(Gainestown)
3.33 GHz4v0.4.3 v0.4.4 v0.4.4 v0.4.3 v0.4.3 v0.4.3 v0.4.3 1,000,000 1.085 0.752 0.544 0.439 0.306 0.456 10,000,000 14.62 8.521 5.254 4.375 2.966 4.305 100,000,000 248.1 84.58 65.86 50.22 34.41 38.10 25.10 1,000,000,000 1,183 696.5 478.6 468.2 322.0 10,000,000,000 6,291 4,481 1This was actually a 2.8 GHz Phenom II X3. It was unlocked to 4 cores and then overclocked to 3.2 GHz. Credit to Raymond Chan.
2Intel Turbo Boost Technology increases actual operating frequency to 2.8 GHz.
3Overclocked from 2.67 GHz. Actual operating frequency after Turbo Boost is 4.2 GHz.
4Intel Turbo Boost Technology increases actual operating frequency to 3.46 GHz. Credit to Shigeru Kondo.
Number of Digits Core 2 Quad
(6 MB cache)
2.66 GHzCore i7
2.67 GHz1Core i7
4.0 GHz22 x Opteron
(Shanghai)
3.34 GHz32 x Xeon
(Harpertown)
3.2 GHz2 x Xeon
(Gainestown)
3.2 GHz4v0.4.1 v0.4.2 v0.4.2 v0.4.2 v0.4.2 v0.4.1 1,000,000 0.918 0.536 0.366 0.617 0.716 10,000,000 7.859 5.027 3.398 4.288 4.774 100,000,000 103.1 62.58 42.07 42.31 41.56 28.14 1,000,000,000 1,360 844.6 574.4 552.9 520.2 365.2 10,000,000,000 6,999 4,961 1Intel Turbo Boost Technology increases actual operating frequency to 2.8 GHz.
2Overclocked from 2.67 GHz. Actual operating frequency after Turbo Boost is 4.2 GHz.
3Overclocked from 2.9 GHz. Credit to Hawkeye4077 from XtremeSystems.
4Credit to Shigeru Kondo. Possibly overclocked, but the submitter made no mention of the actual operating frequency.
There has been a report from someone (with identical processors and faster ram), that these timings are unattainable without overclocking.
Multi-core Scaling: How much faster is multi-threading?
- v0.5.3 – v0.5.4:
| Processor(s): | CPU Frequency*: | Memory: | Memory Frequency: | Multi-Threading Benefit: | View Benchmark Data: |
| Intel Core 2 Quad Q6600 @ 2.4 GHz | 2.4 GHz | 6 GB DDR2 | 800 MHz | 3.570 x | View Benchmarks |
| Intel Core i7 920 @ 2.67 GHz | 3.34 GHz (3.5 GHz Turbo Boost) | 12 GB DDR3 | 1336 MHz | 4.104 x | View Benchmarks |
| 2 x Intel Xeon X5482 Harpertown @ 3.2 GHz | 3.2 GHz | 64 GB DDR2 | 800 MHz | 6.458 x | View Benchmarks |
*Note that CPU frequencies higher than the stock frequency imply overclocking.
Al ejecutar el software
Y navegar por algunas opciones:
-
- Algunas Capturas de Pantalla del Software:
Pi – 500 million digits (6 minutes, 40 seconds) Pi – 1 billion digits (7 minutes) Pi – 100 billion digits (28 hours) 
2.8 GHz Phenom II X3
(Unlock to 4 Cores + Overclock to 3.2 GHz)
720 Deneb2.67 GHz Core i7
(Overclock to 4.2 GHz)
920 Bloomsfield4 GB DDR3
1333 MHz (dual channel)12 GB DDR3
1200 MHz (triple channel)Fuente: http://kira.herobo.com/ Contacta al Creador de esta entrada:
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