"DE" == DE <satan66613@yandex.ru> writes:
DE> on 26.08.2009 at 20:38 joel wrote : >>> a thought about operations tweaks >>> >>> one may want to tile and/or partially unroll operation loops but >>> since such thing characterize operations rather than objects >>> themselves it is wrong to tag the objects with such info >>> consider >>> >>> matrix<double, tile<3, 3> > tiled1; //the first one //... >>> matrix<double, tile<3, 1> > tiled2; //far from the first one >>> //... matrix<double> result = tiled1*tiled2; //what tiling >>> would occure >> In those cases, we compute the smallest common multiple of tiling >> shape as stated in all loop optimization techniques paper. DE> i consider it a bad (erroneos) practice because in such a case DE> neither of programmers intentions would take place but something DE> totally different instead DE> '3' is a common number as well as 'power of 2' in such a common DE> case like Seems like you're determined to keep this thread alive beyond reason. May I humbly suggest that at least you do the following before posting: - read the text you're answering to - make yourself familiar with the relevant literature Had you done so, you would, maybe, discovered that: - a common multiple is not a common number, although they have common in common. - more, a common multiple of a tiling shape is not even a number (although it can represented by one in R^n). - last, that people have written about this profusely and googling for a few keywords would be a good idea. Other than that, yes, 3 is a rather common number. Not as nice as my personal favourite, 42, though. Best regards, Maurizio