IT Nursery
In C++, Why is a boolean 1 byte and not 1 bit of size? Why aren’t there types like a 4-bit or 2-bit integers? I’m missing out the above...
What is the difference between Trap and Interrupt? If the terminology is different for different systems, then what do they mean on x86? 10 Answers 10
I am wondering how much of Ulrich Drepper’s What Every Programmer Should Know About Memory from 2007 is still valid. Also I could not find a newer version than...
It is unclear to me how the compiler will automatically know to compile for 64-bit when it needs to. How does it know when it can confidently target 32-bit?...
What is the difference between a core and a processor? I’ve already looked for it on Google, but I only get definitions for multi-core and multi-processor, which is not...
In order to mitigate against kernel or cross-process memory disclosure (the Spectre attack), the Linux kernel1 will be compiled with a new option, -mindirect-branch=thunk-extern introduced to gcc to perform...
I’ve been racking my brain for a week trying to complete this assignment and I’m hoping someone here can lead me toward the right path. Let me start with...
How can the theoretical peak performance of 4 floating point operations (double precision) per cycle be achieved on a modern x86-64 Intel CPU? As far as I understand it...
Here is a piece of C++ code that shows some very peculiar behavior. For some strange reason, sorting the data (before the timed region) miraculously makes the loop almost...