MFC-Fractal
compiler-explorer
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MFC-Fractal | compiler-explorer | |
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8 | 190 | |
3 | 15,138 | |
- | 2.1% | |
4.0 | 9.9 | |
3 months ago | 5 days ago | |
C++ | TypeScript | |
- | BSD 2-clause "Simplified" License |
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MFC-Fractal
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does anyone know why my mandelbrot looks like this?
Yes, those are the remnants of the phoenix transform. You can visualize it in my software from all resolutions up to 16k by 11k. Clone it from git via Visual Studio if you wish.
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Can someone explain to me the "limited by main thread" thing?
Fractal Generator
- Using final in C++ to improve performance
- Fractals with petal and leaf effects (I really wish there was a fractal developer corner where we could discuss some of the implementation details.)
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Got the buddahbrot coded up fully today. Some preliminary renders
Here's my project on Github. You can fork it with Visual Studio Community. That IDE is free as air. If you elect to do this, you will need to tell Visual Studio Installer to include MFC libraries and C++. This framework and language are "not cool" anymore so the support needs to be enabled. DM me if you want a precise answer.
- Fractal Way intro
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Experiments with sum (Fractal Way alpha tests)
Awesome! That looks like the stair step effect I call it in my algorithm. Of course it does not look that amazing. Mine is sort of boring really.
- Hello - I'm me and I wanted to introduce myself. Here is something that I've worked on for quite awhile on/off as personal time permits. Hope to fit in here.
compiler-explorer
- Ask HN: Which books/resources to understand modern Assembler?
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3rd Edition of Programming: Principles and Practice Using C++ by Stroustrup
You said You won't get "extreme performance" from C++ because it is buried under the weight of decades of compatibility hacks.
Now your whole comment is about vector behavior. You haven't talked about what 'decades of compatibility hacks' are holding back performance. Whatever behavior you want from a vector is not a language limitation.
You could write your own vector and be done with it, although I'm still not sure what you mean, since once you reserve capacity a vector still doubles capacity when you overrun it. The reason this is never a performance obstacle is that if you're going to use more memory anyway, you reserve more up front. This is what any normal programmer does and they move on.
Show what you mean here:
https://godbolt.org/
I've never used ISPC. It's somewhat interesting although since it's Intel focused of course it's not actually portable.
I guess now the goal posts are shifting. First it was that "C++ as a language has performance limitations" now it's "rust has a vector that has a function I want and also I want SIMD stuff that doesn't exist. It does exist? not like that!"
Try to stay on track. You said there were "decades of compatibility hacks" holding back C++ performance then you went down a rabbit hole that has nothing to do with supporting that.
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C++ Insights – See your source code with the eyes of a compiler
C++ Insights is available online at https://cppinsights.io/
It is also available at a touch of a button within the most excellent https://godbolt.org/
along side the button that takes your code sample to https://quick-bench.com/
Those sites and https://cppreference.com/ are what I'm using constantly while coding.
I recently discovered https://whitebox.systems/ It's a local app with a $69 one-time charge. And, it only really works with "C With Classes" style functions. But, it looks promising as another productivity boost.
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Ask HN: How can I learn about performance optimization?
[P&H RISC] https://www.google.com/books/edition/_/e8DvDwAAQBAJ
Compiler Explorer by Matt Godbolt [Godbolt] can help better understand what code a compiler generates under different circumstances.
[Godbolt] https://godbolt.org
The official CPU architecture manuals from CPU vendors are surprisingly readable and information-rich. I only read the fragments that I need or that I am interested in and move on. Here is the Intel’s one [Intel]. I use the Combined Volume Set, which is a huge PDF comprising all the ten volumes. It is easier to search in when it’s all in one file. I can open several copies on different pages to make navigation easier.
Intel also has a whole optimization reference manual [Intel] (scroll down, it’s all on the same page). The manual helps understand what exactly the CPU is doing.
[Intel] https://www.intel.com/content/www/us/en/developer/articles/t...
Personally, I believe in automated benchmarks that measure end-to-end what is actually important and notify you when a change impacts performance for the worse.
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Managing mutable data in Elixir with Rust
Let's compile it with https://godbolt.org/, turn on some optimisations and inspect the IR (-O2 -emit-llvm). Copying out the part that corresponds to the while loop:
4:
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Free MIT Course: Performance Engineering of Software Systems
resources were extra useful when building deeper intuitions about GPU performance for ML models at work and in graduate school.
- CMU's "Deep Learning Systems" Course is hosted online and has YouTube lectures online. While not generally relevant to software performance, it is especially useful for engineers interested in building strong fundamentals that will serve them well when taking ML models into production environments: https://dlsyscourse.org/
- Compiler Explorer is a tool that allows you easily input some code in and check how the assembly output maps to the source. I think this is exceptionally useful for beginner/intermediate programmers who are familiar with one compiled high-level language and have not been exposed to reading lots of assembly. It is also great for testing how different compiler flags affect assembly output. Many people used to coding in C and C++ probably know about this, but I still run into people who haven't so I share it whenever performance comes up: https://godbolt.org/
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Verifying Rust Zeroize with Assembly...including portable SIMD
To really understand what's going on here we can look at the compiled assembly code. I'm working on a Mac and can do this using the objdump tool. Compiler Explorer is also a handy tool but doesn't seem to support Arm assembly which is what Rust will use when compiling on Apple Silicon.
- 4B If Statements
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Operator precedence doubt
Play around with it in godbolt if you're really curious: https://godbolt.org/
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Cant Use Vectors in VSCode
It sounds like you are very new to programming and C++. If you'll allow me to make a recommendation: trying to set up a C++ in VS Code is quite a difficult task for a beginner. There are a lot of trip ups -- the compiler you're using, how your Code Runner or tasks.json or launch.json are set up, whether you're using Makefiles or Cmake, etc. For beginning with C++, I would really recommend messing around with Compiler Explorer instead (https://godbolt.org/). It was originally designed to turn C++ code into assembly for debugging, but you can use it like a fast scratchpad for learning, and it auto rebuilds as you make changes so you can see errors quickly. Good luck!
What are some alternatives?
minemath2021
C++ Format - A modern formatting library
StandaloneHeaders - DI standalone headers for multiple projects
rust - Empowering everyone to build reliable and efficient software.
format-benchmark - A collection of formatting benchmarks
papers - ISO/IEC JTC1 SC22 WG21 paper scheduling and management
rustc_codegen_gcc - libgccjit AOT codegen for rustc
firejail - Linux namespaces and seccomp-bpf sandbox
bubblewrap - Low-level unprivileged sandboxing tool used by Flatpak and similar projects
QEMU - Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.
arewefastyet - arewefastyet.rs - benchmarking the Rust compiler
OpenBLAS - OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.