Bal's PiFast Computations

Submitted by admin on Wed, 07/27/2005 - 00:18

The following computations were done using the program PiFast on an AMD T-Bird 1.33GHz with 640mb DDR ram.

250 Million Digits

Program : PiFast version 3.3, by Xavier Gourdon
Computation of 250000000 digits of Pi
Method used : Chudnovsky
Size of FFT : 8192 K
Physical memory used : ~ 393216 K
Disk memory used : ~ 1072.88 Meg
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Computation run information :

Start : Thu Aug 23 13:51:01 2001
End : Thu Aug 23 16:59:38 2001
Duration : 11317.95 seconds

Time spent in disk swapping : 1278 s (reading 937, writing 341)
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Total computation time : 11317.95 seconds (~ 3.14 hours)
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1 Billion digits of Pi

Program : PiFast version 4.0, by Xavier Gourdon
Computation of 1000000000 digits of Pi
Method used : Chudnovsky
Size of FFT : 8192 K
Physical memory used : ~ 395360 K
Disk memory used : ~ 4291.53 Meg
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Computation run information :

Start : Tue Sep 04 13:11:41 2001
End : Wed Sep 05 06:30:34 2001
Duration : 62332.86 seconds

Time spent in disk swapping : 9976 s (reading 7551, writing 2425)
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Total computation time : 62332.86 seconds (~ 17.31 hours)
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