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Rust meetup delhi nov 18
The presentation introduces Rust, highlighting its memory safety, speed, and thread safety. It discusses Rust features like ownership and borrowing for memory management. Examples are given of C++ problems like dangling pointers that Rust prevents. The speaker then demonstrates using Rust for string processing and shows it provides a 20x performance improvement over Python. The presentation concludes that Rust is well-suited for systems programming and innovation due to its speed.
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Rust meetup delhi nov 18
- 1. Let’s Get Rusty License:CC BY-SA 4.0 International. You are free to share and adapt. Nov 23, 2018 | Rust Community Meet-up 2018 | Delhi NCR Abhiram Ravikumar | Mozilla Tech Speaker | ML Research Fellow, SAP Labs India @abhi12ravi
- 2. Hi there! Abhiram Ravikumar •Mozilla Tech Speaker • Open Source Evangelist • Data Science Research Fellow • Lynda Instructor • Software Developer, SAP Labs India Questions / Feedback - @abhi12ravi
- 3. Agenda • Why Rust? •Rust features – (what have you?) • FFIs (Foreign Function Interfaces) demo • Rust Uses and Applications @abhi12ravi
- 4. The audience -Orgs @abhi12ravi
- 5. The audience –Rust knowledge @abhi12ravi
- 6. The audience –rusty-projects @abhi12ravi
- 7. Prelude: C++ Problems •Dangling pointer • Segmentation fault • Iterator invalidation • Thread safety int* abc() { int x = 1; return &x; } @abhi12ravi
- 8. Prelude: C++ Problems •Dangling pointer • Segmentation fault • Iterator invalidation • Thread safety int* abc() { int x = 1; return &x; } @abhi12ravi
- 10. Systems level Memory safe Threadsafe Fast ⚡ OOPS Strong Compiler FFIs No GC!
- 11. Memory management –The Good Stuff • Concept of mutability • Ownership & Borrowing
- 12. Concept of mutability– the why • Variables are immutable by default • Add keyword mut to make it mutable • Future readers know the value is going to change • Less prone to unwanted changes in the variable’s value fn main() { let mut x = 5; println!(“X is {}“, x); x = 6; println!(“X is {}“, x); } // X is 5 // X is 6
- 13. Memory allocation -Fundamentals 1. The memory must be requested from the operating system at runtime. 2. We need to return this memory to the operating system when we’re done with our usage.
- 14. Returning memory tothe OS Other programming languages: • Garbage Collector (GC) • W/o GC – programmer’s responsibility Challenges: • Need to pair exactly one allocate with exactly one free
- 15. In Rust { let s= String::from("hello"); // s is valid from this point forward // do stuff with s } // this scope is now over, and s is no longer valid Memory is automatically returned once variable goes out of scope.
- 16. Also, in othernews…
- 17. This week inRust… News & Blog Posts The relative performance of C and Rust Quote of the Week Bare Metal Attracts Rust - Sven Gregori on Hackaday
- 18. Enough Rust, let’sswitch to Python!
- 19. Python Python • StrongEcosystem • Fast iterations • Robust interpreter • Powerful meta programming (APIs) • Library support - fantastic • Really slow • Performance issues • Far from metal • Poor multi-threading support
- 20. Rust Python • Speed– fast ⚡ • Compile time ⬇️ • Stable environment (Reliability) • Crash handling functionality ✔️ • Closer to metal • Really slow • Performance issues • Far from the metal • Poor multi-threading support
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- 23. Sample Problem Statement StringProcessing use-case • Count the pairs of repeated characters in the given string • How many subsequent-repeated groups of chars are in the given string?
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- 25. Performance Benchmark Scenario pure_pythonpython_with_rus t Observation Mean (ms) 53.9732 2.6085 ~ 20x faster Max (ms) 56.9428 2.9296 ~19x faster
- 26. “Innovation is anecessity now, and the faster your programs run, the faster you innovate!” Abhiram Ravikumar
- 27. References 1. The Rustbook 2. Rust Python Example by Rocha C Bruno 3. Armin Ronacher: A Python and Rust love story 4. Dan Callahan - My Python's a little Rust-y - PyCon 2015 5. Extending Python with Rust (Samuel Cormier-Iijima) 6. All you need to know about FFI
- 28. Thank you! This slidedeck is available here: speakerdeck.com/abhi12ravi