Approximate cost to access various caches and main memory?
Can anyone give me the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel … Read more
cpu-cache
What Every Programmer Should Know About Memory?
I am wondering how much of Ulrich Drepper’s What Every Programmer Should Know About Memory from 2007 is still valid. Also I could … Read more
Why does the order of the loops affect performance when iterating over a 2D array?
Below are two programs that are almost identical except that I switched the i and j variables around. They both run in different … Read more
What is a “cache-friendly” code?
What is the difference between “cache unfriendly code” and the “cache friendly” code? How can I make sure I write cache-efficient code? 9 … Read more