cpu-architecture – BugsFixing

October 16, 2022 visual-studio

[SOLVED] What is the purpose of the "Prefer 32-bit" setting in Visual Studio and how does it actually work?

Issue 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? I am mainly curious about how the compiler knows which

June 10, 2022 performance

[SOLVED] How does perf record (or other profilers) pick which instruction to count as costing time?

Issue Recently, I found out that actually perf (or pprof) may show in disassembly view instruction timing near the line that didn’t actually take this time. The real instruction, which actually took this time, is before it. I know a

June 10, 2022 multithreading

[SOLVED] Is a schedulable unit of CPU time slice process or thread?

Issue I want to clarify whether "a schedulable unit of CPU time slice" is "process" or "thread" (kernel managed thread). What I mean by "schedulable unit of CPU time slice" is the unit which CPU scheduler of an operating system

June 9, 2022 function

[SOLVED] How are functions encoded/stored in memory?

Issue I understand how things like numbers and letters are encoded in binary, and thus can be stored as 0’s and 1’s. But how are functions stored in memory? I don’t see how they could be stored as 0’s and

May 20, 2022 macos

[SOLVED] Bad CPU type in executable mac Intel core

Issue Trying to install a specific version of nvm But I get nvm install 16.14.2 -bash: /opt/homebrew/bin/awk: Bad CPU type in executable -bash: /opt/homebrew/bin/awk: Bad CPU type in executable -bash: /opt/homebrew/bin/awk: Bad CPU type in executable -bash: /opt/homebrew/bin/awk: Bad CPU

May 16, 2022 linux

[SOLVED] Why is the page size of Linux (x86) 4 KB, how is that calculated?

Issue The default memory page size of the Linux kernel on x86 architecture was 4 KB, I wonder how was that calculated, and why ? Solution The default page size is fixed by what the MMU (memory management unit) of

May 13, 2022 performance

[SOLVED] Latency bounds and throughput bounds for processors for operations that must occur in sequence

Issue My textbook (Computer Systems: A programmer’s perspective) states that a latency bound is encountered when a series of operations must be performed in strict sequence, while a throughput bound characterizes the raw computing capacity of the processor’s functional units.

May 9, 2022 loops

Tag: cpu-architecture