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ecmfeed.m
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1992-05-31
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/* ecmfeed.m
Feeder source example for elliptic curve method (ECM).
Compile with:
> cc -O ecmfeed.m Feeder.o -s -o ecm.feed
Then the executable ecm.feed assumes, at run time, the existence
of the actual ecm program "ecm."
Copyright 1991 NeXT, Inc. All Rights Reserved.
*/
#include <stdio.h>
#include <sys/time.h>
#include "Feeder.h"
void set_random_seed()
/* Start the random number generator at a new position. */
{
struct timeval tp;
gettimeofday(&tp,NULL);
srandom((int)tp.tv_usec + (int)getpid());
}
void main(int argc, char **argv)
{
id feed = [Feeder new];
int n,seed,sgn,q;
char cmd[256],host[16];
char letter[8];
int err;
set_random_seed();
n = [feed numMachines];
while(n--) {
if(![feed isLaunchable:n]) continue;
[feed getHostname:host for:n];
seed = random(); /* Every machine gets a 32-bit random seed. */
sgn = 1;
q = 128; /* We are going to try to factor F12 = 2^4096 + 1. */
if(sgn<0) strcpy(letter,"m"); else strcpy(letter,"f");
sprintf(cmd, "cd Zfactor; ecm %d %d %d 10000 0 24 > log.%s%d.%s",sgn,q,seed,letter,q,host);
[feed changeHost:n user:NULL password:NULL command:cmd];
}
[feed launchAll];
}