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 complete …
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 into …
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 memory to allow …
How to use (read/write) CPU caches L1, L2, L3 - Stack Overflow
I can of course use the CPU affinity in order to allocate a whole core to the thread that processes my task Another kind of optimization could be to put in the CPU caches (L1, L2, L3) the data my tasks …
cpu architecture - Write-back vs Write-Through caching? - Stack …
Sep 14, 2021 · Simply put, write back has better performance, because writing to main memory is much slower than writing to cpu cache, and the data might be short during (means might change again …
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 address …
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 repercussions …
CPU Cache: what does it do, how does it work, and how can I ... - Reddit
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.
How can I do a CPU cache flush in x86 Windows? - Stack Overflow
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 implementation or Win32 call. Is ther...
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 so in Linux, …