C++ cache aware programming

Question

is there a way in C++ to determine the CPU\'s cache size? i have an algorithm that processes a lot of data and i\'d like to break this data down into chunks such that they f

Answer 1

You can see this thread: http://software.intel.com/en-us/forums/topic/296674

The short answer is in this other thread:

On modern IA-32 hardware, the cache line size is 64. The value 128 is a legacy of the Intel Netburst Microarchitecture (e.g. Intel Pentium D) where 64-byte lines are paired into 128-byte sectors. When a line in a sector is fetched, the hardware automatically fetches the other line in the sector too. So from a false sharing perspective, the effective line size is 128 bytes on the Netburst processors. (http://software.intel.com/en-us/forums/topic/292721)