HEXUS Pifast Challenge up and Running again

[0iD]

This SO needs resurrecting, i mean people could reach stellar speeds nowardays! Start a campain!

[aeronic]

/me signs onto campaign

[Lowe]

Just had a crack...

Running Hexus Pifast to 10M places...
PiFast, version 4.1 (Copyright 1999-2001 Xavier Gourdon)
http://numbers.computation.free.fr/C...am/pifast.html
Menu :
[0] Compute Pi with Chudnovsky method (Fastest)
[1] Compute Pi with Ramanujan method
[2] Compute E by the exponential series exp(1)
[3] Compute E by the exponential series 1/exp(-1)
[4] Compute Sqrt(2) (useful for testing)
[5] Define your constant with hypergeometric series
[6] Compute a user constant from a .pifast file
[7] Decompress a result file
[8] Check a compress result Pi file
Enter your choice :
Choose your computation mode :
[0] standard mode (no disk memory used)
[1] basic disk memory mode (for big computations)
[2] advanced disk memory mode (for huge computations)
Enter your choice :
Number of decimal digits : Possible FFT modes, with approximate needed memory :

FFT Size=1024 k, Mem=61163 K (Fastest mode)
FFT Size= 512 k, Mem=40683 K (Time: Fastest mode * 1.1)
FFT Size= 256 k, Mem=30243 K (Time: Fastest mode * 1.3)
FFT Size= 128 k, Mem=25123 K (Time: Fastest mode * 1.7)
FFT Size= 64 k, Mem=22463 K (Time: Fastest mode * 2.7)
FFT Size= 32 k, Mem=21183 K (Time: Fastest mode * 4.7)
...

Enter FFT Size in k :
Compressed output (also useful to specify output format) ? [0=No, 1=Yes] :
Total Physical Memory Allocated = 61372 Kbytes
Computing series with index N=705226
Starting step 6
Starting step 5 ...
Starting step 4 ...
Starting step 3 ...
Starting step 2 ...
Starting step 1 ...
Starting step 0 ...
Series computing time : 24.25
Division time : 2.78
InvSqrt time : 1.72
Final huge multiplication time : 1.17
---------------------------------------------------------------
Total computation time : 30.03 seconds(~ 0.01 hours)
Writing informations into file pi.txt

The computation seems OK
Appending result to file pi.txt ...

Jot down your results or take a screenshot
Press any key to continue . . .

[tailtiu]

awesome !

[tailtiu]

and thanks

[tailtiu]

woot 5 posts

[D-BEAR]

Just run this for a laugh while priming.

[Bhavv]

On the Hexus PI tool, I got 10million digits of PI calculated in 75.89 seconds.

On Super PI it takes 10 seconds for 1 million digits.

Is that meant to be ok?

Edit - Sorry, had my ram set to 950 Mhz Cas 5 so super PI 1 million is 11 seconds.

Set to 950 Mhz Cas 4 I get 10 seconds, but it is too unstable for 24/7 use.

[Lengore]

Probably old hat now but here's my effort with a Core 2 Duo E8400 and 3 gigs of DDR2 800:

Program : PiFast version 4.1, by Xavier Gourdon
Computation of 10000000 digits of Pi
Method used : Chudnovsky
Size of FFT : 1024 K
Physical memory used : ~ 61163 K
Disk memory used : ~ 0.00 Meg
------------------------------------------------------------
Computation run information :

Start : Mon Feb 09 18:48:47 2009
End : Mon Feb 09 18:49:18 2009
Duration : 31.08 seconds
============================================================
Total computation time : 31.08 seconds (~ 0.01 hours)
============================================================
Pi with 10000000 digits :
Pi = 3.
1415926535 8979323846 2643383279 5028841971 6939937510 : 50
5820974944 5923078164 0628620899 8628034825 3421170679 : 100
8214808651 3282306647 0938446095 5058223172 5359408128 : 150
4811174502 8410270193 8521105559 6446229489 5493038196 : 200
4428810975 6659334461 2847564823 3786783165 2712019091 : 250
4564856692 3460348610 4543266482 1339360726 0249141273 : 300
7245870066 0631558817 4881520920 9628292540 9171536436 : 350
7892590360 0113305305 4882046652 1384146951 9415116094 : 400
3305727036 5759591953 0921861173 8193261179 3105118548 : 450
0744623799 6274956735 1885752724 8912279381 8301194912 : 500

9833673362 4406566430 8602139494 6395224737 1907021798 : 550
6094370277 0539217176 2931767523 8467481846 7669405132 : 600
0005681271 4526356082 7785771342 7577896091 7363717872 : 650
1468440901 2249534301 4654958537 1050792279 6892589235 : 700
4201995611 2129021960 8640344181 5981362977 4771309960 : 750
5187072113 4999999837 2978049951 0597317328 1609631859 : 800
5024459455 3469083026 4252230825 3344685035 2619311881 : 850
7101000313 7838752886 5875332083 8142061717 7669147303 : 900
5982534904 2875546873 1159562863 8823537875 9375195778 : 950
1857780532 1712268066 1300192787 6611195909 2164201989 : 1000

[magneticman]

never saw this before

[Apex]

Sorry to necro this - but does any one have a copy anymore ?

[Lengore]

Sorry to necro this - but does any one have a copy anymore ?

Yes, I have a copy. Would you like me to email it to you?

My current hardware and current result:-

Mainboard : ASUS P8H67-M EVO
BIOS : AMI (OEM) 1502 03/02/2011
Total Memory : 2.91GB DIMM DDR3
Processor : Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4C 3.71GHz Turbo, 3.7GHz IMC, 2x 256kB L2, 6MB L3)
Memory Controller : ASUS Core (Sandy Bridge) DRAM Controller 100MHz FSB, 2x 2GB DIMM DDR3 2x 667MHz (1.33GHz), Integrated Graphics
Memory Module(s)
Memory Module : Corsair CMX4GX3M2A1600C8 2GB DIMM DDR3 PC3-12800U DDR3-1600 (9-9-9-24 5-34-10-5)
Memory Module : Corsair CMX4GX3M2A1600C8 2GB DIMM DDR3 PC3-12800U DDR3-1600 (9-9-9-24 5-34-10-5)

Total computational time 14.56 seconds.

[scaryjim]

I might still have it kicking around somewhere. I assume the old links have died thanks to the site reorganise?

I'll dig and report back

EDIT: Too slow, and apparently my copy went when my replacement reformatted my old computer in the last unit (getting rid of around 6 months of work when he did so, incidentally: I rofl'd). If someone has one and wants to drop me it I'll see if I can host it somewhere.

EDIT2: I seem to remember running it on my old Core 2 laptop and getting something stupidly fast though