Richard, >> ever appropriate on machines like the Z where the penalty for not >> being in the cache is so high?
less for the data-cache- but even then the cache will have an effect regardless of strategy. and the I-cache will do have an effect regardless. Unless the code in the search algorithm is sequentialy without any branch/jump (hence everything is only executed once)- maybe out-of-order strategie of z196 will find bits to do ahead of time. Martin