PocketMatrix

This topic should be made a "sticky". As a "old-school" ASM programmer, I forget how people look at their data... ie; they look at it from their perspective, not the hardware's. I've tried to explain this to other people at times, but I don't think I ever got the point across. Refractor's answers to DooMer_MP3's example is probably the best example I've ever seen of this. A nice simple case where not using the cache correctly can just absolutely kill your performance, and a simple change can get you a 2x increase. I've reorganized massive data arrays into tiles and seen a 10x improvement. When your CPU speed is 4x faster than your memory... the cache makes a big, big difference.

Cheers,

rcp

rcp,
Can you give a quick example of the original array you were dealing with, and an example of what you did to get it in "tile" form? I'm not quite understanding you here. I appreciate it though. But yes, this information seems REAL important.

Chris