EDIT: We are also seeing a slight increase in speed(chainsperday). Should we leave new sieve options default or is it ok to use modified options that worked well in previous version ?
The defaults should still be pretty good. I did get rid of -sievepercentage in favor of -sievefilterprimes. -sievefilterprimes is used to specify the exact number of primes that will be filtered out by the sieve (instead of some percentage of a number that depends on -sievesize). The default is 7849 based on the old defaults.
There's also two new parameters you can try:
* -l1cachesize determines the sieve segment size (in bytes). This should be the size of the L1 or L2 cache (or some other number close to them). The default value is 28000. This value has a minor impact on mining performance.
* -primorial determines the primorial that is used as a multiplier in all candidate numbers. This should a small prime number such as 47 or 53. Use the parameters -debug -printprimorial to see which primorials are used by default. This value has a minor impact on mining performance.
The rest of the documentation is here:
https://github.com/mikaelh2/primecoin/blob/master/doc/README.mdMake sure new official build is difficulty 11 ready, at the current rate we will be hitting 11 diff. early Feb.
HP11 should already work just fine with difficulty 11. And I doubt we'll be hitting difficulty 11 that soon because it would require 30 times more mining power.
