eugene@ames.UUCP (Eugene Miya) (01/22/86)
I have been asked to post the following information.
We have calculated $pi$ to 29,360,128 decimal digits using one
processor of our Cray-2. It took 28 hours and performed 12 trillion
operations over a three-day period. Memory requirements took
over 138 MWs (64-bit). The result was determined by Borwein's algorithm.
[SIAM Rev. 26, 1984]. The check took 40 hours. The technical report
will be issued shortly. The work was performed by Dr. Dave Bailey,
a contractor with Informatics General Corp. of the Numerical
Aerodynamic Simulation Program Office, NASA Ames Research Center.
The previous large computation was done in Japan to about 10 million digits
on a Hitatchi 810.
If you want the algorithm, look it up at a library.
Don't ask me: I won't send it!
For a copy of the TR: Write Bailey at MS 233-1. (Serious inquires, please.
The merely curious should wait for the press release.)
From the Rock of Ages Home for Retired Hackers:
--eugene miya
NASA Ames Research Center
{hplabs,ihnp4,dual,hao,decwrl,allegra}!ames!aurora!eugene
emiya@ames-vmsb.ARPArab@well.UUCP (Bob Bickford) (01/27/86)
In article <1358@ames.UUCP>, eugene@ames.UUCP (Eugene Miya) writes: > I have been asked to post the following information. > > We have calculated $pi$ to 29,360,128 decimal digits using one > processor of our Cray-2. It took 28 hours .... ...... Did you by any chance find a long sequence of 0's and 1's ? (See _Contact_ by Carl Sagan) Robert Bickford (rab@well.uucp) ================================================ | I doubt if these are even my own opinions. | ================================================
jim@sivax.UUCP (Jim Boman) (01/28/86)
> In article <1358@ames.UUCP>, eugene@ames.UUCP (Eugene Miya) writes: > > I have been asked to post the following information. > > > > We have calculated $pi$ to 29,360,128 decimal digits using one > > processor of our Cray-2. It took 28 hours .... > ...... > > Did you by any chance find a long sequence of 0's and 1's ? > (See _Contact_ by Carl Sagan) >> I'll bet that the 29,360,129th digit begins a repitition! >> (using one processor on my TIMEX 1000, 28 years)