Generalized Cullen/Woodall Sieving Software - Page 2

rogue · 2014-12-24, 14:45

Unfortunately there is still a bug in the code.

It is missing factors under certain unknown conditions.

rogue · 2014-12-29, 19:00

Quote:

Originally Posted by rogue

Unfortunately there is still a bug in the code.

It is missing factors under certain unknown conditions.

I'm still at a loss on this one. Sometimes I can run the code and get a nice OpenCL error at runtime, but I don't know why. The two are likely related. If I can track down the latter, the former might be fixed along with it.

rogue · 2014-12-29, 19:11

As if I haven't stated this already, I recommend against anyone using MultiSieve. Not only will I not support it, it will not test n < b for either Cullen or Woodall sieves. For Cullens n can be less than b, but not for Woodalls so it is eliminating candidates that should not be eliminated.

The recommended method of building candidates for testing is as follows:

1) Run gwcsieve_smallp to to p = n.
2) Using the output from step 1, run gcwsieve for p > n.

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2014-12-24, 14:45	#12
rogue "Mark" Apr 2003 Between here and the 2²·7·223 Posts	Unfortunately there is still a bug in the code. It is missing factors under certain unknown conditions.

2014-12-29, 19:11	#14
rogue "Mark" Apr 2003 Between here and the 14144₈ Posts	As if I haven't stated this already, I recommend against anyone using MultiSieve. Not only will I not support it, it will not test n < b for either Cullen or Woodall sieves. For Cullens n can be less than b, but not for Woodalls so it is eliminating candidates that should not be eliminated. The recommended method of building candidates for testing is as follows: 1) Run gwcsieve_smallp to to p = n. 2) Using the output from step 1, run gcwsieve for p > n.