What Every Programmer Should Know about How CPUs Work • Matt Godbolt • GOTO 2024 (Category Engineering)

I saw something interesting this week. speech Matt Godbolt, British programmer, game developer and former Google employee, best known as the creator of a popular tool among developers Compiler Explorer. In this talk, Matt talked about things programmers must know about how CPUs work. s (||Yes, I know that it is more fashionable to talk about how GPUs work, but we are talking about the base, not about hype.||). The report sheds light on 45 Minutes to next things

• What does the architecture of modern processors look like in terms of conveyor processing of instructions, what is frontend and backend in processors How the branch prediction mechanism works (branching) How processors disassemble instructions and avoid conflicts with registers How Multiple Instructions Are Achieved Simultaneously and Why It Is Important for Performance (Here's the reordering buffer.) How the processor reacts to errors (for example, segmentation) And reverses miscalculation. How the accuracy of branch prediction directly affects the speed of programs. How data sorting and code features affect execution efficiency (Examples of Python and C + +) Why division is one of the slowest operations, how compilers and programmers can get around it (caches and memory) What tools can be used to analyze performance (Perf, Compiler Explorer, Cache Grind)

As a result, this report is interesting for those who want to write fast and efficient code, understanding how modern processors and compilers really work.

#Engineering #Software #Architecture #Hardware