Why I think that Julia doesn’t solve the two-language problem and when you should use Rust instead. [image] Rust vs Julia in scientific computing Does Julia solve the two-language problem and when should you use Rust instead? The blog post is the base for my…

Oh, I thought you wanted to check if the compiler does not optimize out the whole vector because it is not read from. I did run DHAT on the code currently in the blog post (with outer loop having n = 2^8) and I get the following: ==115== Total: 33,557,613 bytes in 267 blocks Which is more tha…

It seems certain that a new vector is allocated each iteration in Rust as well. [image] Mo8it: Julia just outsources dealing with the capacity into C: Yes, Arrays and some other Core types are implemented in C, and many things are not exposed to the Julia side. For example, fieldnames(Vector…

[image] Mo8it: For me personally, it was not frustrating, but you have to unlearn some patterns from other languages. Thanks for this intro and summary @Mo8it ! Just to clarify, I did not say frustrating. Actually, I’ve always been finding it, I mean coding, as quite a lot of fun. Will take a …

[image] bertschi: Would you consider Box<dyn SomeTrait> as a performance footgun in Rust? That type seems similar to a non-concrete type in Julia, e.g., Ref{Real}. No. Although it is known to have an overhead by using the heap and performing dynamic dispatch , using it is explicit and therefor…

[image] Mo8it: In contrast to Julia silently propagating an abstract type like Any, Rust will not put an instance inside a Box unless you explicitly tell it to. On top of this, there actually is a Box footgun in Julia: julia> function foo() x = 1 x = 2 bar(y) = x,y…

[image] bertschi: Also keep in mind, that Julia brings a runtime and errors will not necessarily end the program, but might be fixed interactively – see here for a Lisp legend. Note that the conditions-restarts kind of error handling from Common Lisp is not available in Julia. Errors are ca…

[image] Benny: There is a discussion on how to pull Arrays to the Julia side to wrap a buffer type on the C side, but I can’t find the link right now. In any case, I don’t think there’s a plan to put this into action soon, not much need for an overhaul instead of small fixes. As I recall the …

Fair enough. In the end it’s probably just preference between, Julia, dynamic with optional static dispatch or, Rust, with static dispatch and explicit dynamic … Guess I made my choice long ago :wink:

[image] Tamas_Papp: Note that the conditions-restarts kind of error handling from Common Lisp is not available in Julia. Errors are caught, or not, and then they end the program. But you can’t go back to the inside of the stack to fix them. Yes, unfortunately. Do you know of any library tryi…

Having attempted to write a moderate sized scientific library in Julia and also for Rust for a field I know very well (20+ years experience with developing software in the field), allow me to say that both Julia and Rust have their challenges. Rusts promise of “write once code” is very appealing. …

Blog post: Rust vs Julia in scientific computing

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Blog post: Rust vs Julia in scientific computing

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