On 08/02/2013 06:06 PM, Christos Tsopokis wrote: > On Fri, Aug 2, 2013 at 5:32 PM, Andrew Haley <aph@xxxxxxxxxx> wrote: > >> And why do you think that there must be a way to achieve it? If it >> exists, it's in that manual. > > Well, it's obviously more complicated than that. When I refer to APIs, I > refer even to the information the manufacturers provide. Indeed, that's what that manual I provided is. > None of them provides details apart from some rudimentary > information on cache organization. On the contrary, if you see the > other link I sent before, then it's obvious that some old arm > processors were designed to be tuned on these things. Maybe they were, although I doubt it, but I presume you're asking about contemporary Intel processors. Again, I don't believe that what you seek exists, and I can think of good reasons why it doesn't. > Yes but I said, I doubt that prefetching works as a force on the > cpu. I guess it can be like a suggestion directive. No, I don't think so. When you do a prefetch, data really do get fetched into the cache. They stay there until that line is needed for something else. Andrew.
