05-22-2008
Take your 500 cores and join PrimGrid. You will have fun, you will be using the most advanced prime number software on the planet, and you won't be rediscovering primes that are already known. PrimGrid has published all of the consecutive primes up to 210,000,000,000. Compressed, the list requires 6 DVD's. Finding consecutive primes is only one of the many projects they have. With 500 cores you should make the leader board easily.
link:
PrimeGrid
7 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi folks,
Here i have written a shell script to calculate a maximum number from 10 numbers entered on command line.
max=0
echo Enter 10 numbers , one at a time
for i in 1 2 3 4 5 6 7 8 9 10
do
read n
max=`expr $max + $n`
if --- At this last step there is some problem, it gives error... (5 Replies)
Discussion started by: rits
5 Replies
2. UNIX for Dummies Questions & Answers
Here's my work of testing whether a number input is perfect or not..
echo Enter a number
read no
i=1
ans=0
while
do
if
then
ans='expr $ans + $i'
fi
i='expr $i + 1'
done
if
then
echo $no is perfect
else
echo $no is NOT perfect
fi (12 Replies)
Discussion started by: Cyansnow
12 Replies
3. Shell Programming and Scripting
Hello,
I have some extra time at work and I'm trying to come up with a good prime number generator for very large numbers that can take advantage of multiple (hundreds) cores. I realize Perl may not be the best solution for this, any ideas?
Thanks! (1 Reply)
Discussion started by: Kweekwom
1 Replies
4. Solaris
I was just checking to see if anyone had a script that would allow me to go from port number to program name. I tried to create my own script but it looks like it only works for IPv4 sockets and it looks like daemons such as sshd return as AF_INET6 (in pfiles) for some reason. I can fix my script... (0 Replies)
Discussion started by: thmnetwork
0 Replies
5. Programming
The problem I'm having is that when you put in the two numbers the answer is just prime.... nothing. I cannot figure this out ive been working on this forever, can someone please god just tell me how to fix this without encrypted "hints".
#include <iostream>
#include <cmath>
using... (3 Replies)
Discussion started by: c++newb
3 Replies
6. Shell Programming and Scripting
Can anybody tell me why the second part of this script (Sieve of Eratosthenes) isn't working properly. This isnt coursework or homework just private studies ( Yes Project Euler began it ) I know there are easier ways of doing this too but I want to do it this way.:p
Iam using Cygwin on Vista... (3 Replies)
Discussion started by: drewann
3 Replies
7. UNIX for Beginners Questions & Answers
I have a factor program that runs and outputs to stdout all the prime numbers that are specified in the given paramters, in this case 30000000-31000000.
Command:
factor/factor 30000000-31000000
Sample output:
30999979 = 30999979
30999980 = 2^2 5 11 140909
30999981 = 3 10333327... (6 Replies)
Discussion started by: steezuschrist96
6 Replies
LEARN ABOUT DEBIAN
envext
ENVEXT(1) The Canonical Csound Reference ENVEXT(1)
NAME
envext - Extracts the envelope of a file to a text file. .
SYNTAX
envext [-flags] soundfile
csound -U envext [-flags] soundfile
INITIALIZATION
soundfile - Name of the input soundfile.
The following flags are available for envext (The default values are stated in parenthesis):
-o fnam Name of output filename (newenv)
-w size (in seconds) of analysis window (0.25)
The envext utility generates a text file containing time and amplitude pairs by finding the absolute peak within each window.
EXAMPLE
Using the command (while in the manual directory):
csound -U envext examples/mary.wav
will produce the a text file containing the following:
0.000 0.000
0.000 0.000
0.250 0.000
0.500 0.000
0.750 0.000
1.249 0.170
1.499 0.269
1.530 0.307
1.872 0.263
2.056 0.304
2.294 0.241
2.570 0.216
2.761 0.178
3.077 0.011
3.251 0.001
3.500 0.000
Which shows the time for the peak amplitude within each measured window.
CREDITS
Author: John ffitch
1995
AUTHORS
Barry Vercoe
MIT Media Lab
Author.
Dan Ellis
MIT Media Lab,
Cambridge
Massachussetts
Author.
COPYRIGHT
5.10 08/01/2011 ENVEXT(1)