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by kaba0 1371 days ago
C++ is still the choice for truly performance-critical applications, period.
1 comments
adam_arthur 1371 days ago
Because of network effects, not because of the language itself. Thus dominance will fade over time.

There are many modern languages that are more ergonomic and just as fast.

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AnimalMuppet 1370 days ago
No, actually because of the language itself.

What matters most in high-performance computing? The algorithm, sure. What's in second place? Memory alignment.

Memory alignment determines whether or not I can use SIMD. It also determines how many cache misses I have.

Can I fight that battle using Rust? Maybe. Is it as convenient as in C++? Is any other language? as convenient as C++?

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steveklabnik 1370 days ago
Rust absolutely lets you control alignment, and use SIMD. I won’t claim to make a comparison to C++ here because I have never done that sort of work in it, but it is absolutely a thing.
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adam_arthur 1370 days ago
There are tons of modern languages that allow low level memory access, including Rust. Nobody chooses C++ due to it being more convenient than modern languages.
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