caching - How do cache lines work? - Stack Overflow
The size of the cache-line (64) is a wise chosen trade-off between larger cache-lines makes it unlikely for the last byte of it to be read also in the near future, the duration it takes to fetch the …
CPU Cache: what does it do, how does it work, and how can I
Jun 12, 2021 · On the cpu cache issue, try making a large 2d array of equal width and height. Write a for loop within a for loop to increment every value in the array and time how long it takes.
What is CPU Cache and why is it so important? : r/buildapc - Reddit
That is exactly what modern CPUs do. Many CPUs will have L1, L2, and L3 cache, with L1 being the fastest but smallest, and L3 being the largest but slowest. L1 cache is usually further split …
CPU cache invalidation control from application - clear cache store ...
May 22, 2025 · Current limitation of cache (invalidation) control make 32/64bit address space not very usable if for high-performance computing we must use only a small cache-sized virtual …
How to flush the CPU cache for a region of address space in Linux?
Mar 28, 2014 · I am interested in flushing cache (L1, L2, and L3) only for a region of address space, for example all cache entries from address A to address B. Is there a mechanism to do …
What does it mean for code to be "cache-friendly"?
May 23, 2013 · Main concepts for cache-friendly code A very important aspect of cache-friendly code is all about the principle of locality, the goal of which is to place related data close in …
How are cache memories shared in multicore Intel CPUs?
Jun 3, 2009 · I have a few questions regarding Cache memories used in Multicore CPUs or Multiprocessor systems. (Although not directly related to programming, it has many …
Relation of Mutex and CPU caches (and memory fences)
Nov 25, 2023 · Hardware maintains cache coherence on its own so ordering local accesses to L1d cache is sufficient for mutex functions. (Yes, this is true for all CPUs we run threads …
why are separate icache and dcache needed - Stack Overflow
Jan 3, 2012 · CPU designers are optimizing the iCache and the CPU architecture based on the assumption that code changes are rare. For example, the AMD Software Optimization Guide …
How can I do a CPU cache flush in x86 Windows? - Stack Overflow
Nov 8, 2015 · I am interested in forcing a CPU cache flush in Windows (for benchmarking reasons, I want to emulate starting with no data in CPU cache), preferably a basic C …