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Top 3 C++ Io Projects
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scnlib (https://github.com/eliaskosunen/scnlib) scanf
Project mention: What Every Developer Should Know About GPU Computing | news.ycombinator.com | 2023-10-21I thought I'd share something with my experience with HPC that applies to many areas, especially in the rise of GPUs.
The main bottleneck isn't compute, it is memory. If you go to talks you're gonna see lots of figures like this one[0] (typically also showing disk speeds, which are crazy small).
Compute is increasing so fast that at this point we finish our operations long faster than it takes to save those simulations or even create the visualizations and put on disk. There's a lot of research going into this, with a lot of things like in situ computing (asynchronous operations, often pushing to a different machine, but needing many things like flash buffers. See ADIOS[1] as an example software).
What I'm getting at here is that we're at a point where we have to think about that IO bottleneck, even for non-high performance systems. I work in ML now, which we typically think of as compute bound, but being in the generative space there are still many things where the IO bottlenecks. This can be loading batches into memory, writing results to disk, or communication between distributed processes. It's one beg reason we typically want to maximize memory usage (large batches).
There's a lot of low hanging fruit in these areas that aren't going to be generally publishable works but are going to have lots of high impact. Just look at things like LLaMA CPP[2], where in the process they've really decreased the compute time and memory load. There's also projects like TinyLLaMa[3] who are exploring training a 1B model and doing so on limited compute, and are getting pretty good results. But I'll tell you from personal experience, small models and limited compute experience doesn't make for good papers (my most cited work did this and has never been published, gotten many rejections for not competing with models 100x it's size, but is also quite popular in the general scientific community who work with limited compute). Wfiw, companies that are working on applications do value these things, but it is also noise in the community that's hard to parse. Idk how we can do better as a community to not get trapped in these hype cycles, because real engineering has a lot of these aspects too, and they should be (but aren't) really good areas for academics to be working in. Scale isn't everything in research, and there's a lot of different problems out there that are extremely important but many are blind to.
And one final comment, there's lots of code that is used over and over that are not remotely optimized and can be >100x faster. Just gotta slow down and write good code. The move fast and break things method is great for getting moving but the debt compounds. It's just debt is less visible, but there's so much money being wasted from writing bad code (and LLMs are only going to amplify this. They were trained on bad code after all)
[0] https://drivenets.com/wp-content/uploads/2023/05/blog-networ...
[1] https://github.com/ornladios/ADIOS2
[2] https://github.com/ggerganov/llama.cpp
[3] https://github.com/jzhang38/TinyLlama
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ Io related posts
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Reddit++
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Safe and cross platform C++11 alternative to sscanf
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My AoC2021 solutions in C++
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scnlib (scanf for modern C++) - version 1.0 released
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How to use input correctly
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stdin input library
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Hello friends. I want to read a file with fstream by character and when reach a specific char for example ']' change line and then store the data. I think getline or << doesn't fit because I want to check for whitespaces.
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Index
What are some of the best open-source Io projects in C++? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | scnlib | 953 |
| 2 | ADIOS2 | 253 |
| 3 | psfiles | 39 |
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