State of the Chapel Project

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Overview of progress since 2013: a doubled team finishes a five-year engineering push and launches a three-year follow-up to 2021 focused on stabilizing the core, interoperability and portability. Language changes nearing Chapel 2.0 include initializer default, four memory-management class kinds (shared, owned, managed, borrowed), UTF-8 strings and collection APIs moved to stdlib; constrained generics remain tentative. Runtime and tooling updates yield a 5x speedup on a random-access benchmark with no source changes and reduce leaks to about 13KB on a 1.2GB test. New libfabric runtime, HDF5 and SCDF IO, distributed associative domains, C-array and Python/C interop, LLVM backend and Mason package improvements are in place.

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" chapters (22)

1. 0:00Introduction
2. 0:15History of Chapel
3. 1:34State of the Chapel
4. 2:29FiveYear Push
5. 2:56Barriers
6. 4:09Chapel 20 Features
7. 5:40Chapel 20 Release Candidate
8. 6:22What Happens After 20
9. 8:12Highlights
10. 9:20Libraries
11. 10:07Performance
12. 11:09Source code
13. 12:12Performance improvements
14. 12:44Interoperability improvements
15. 13:06Portability improvements
16. 13:32Memory leaks
17. 14:35Other improvements
18. 15:03Red stuff
19. 15:51New use cases
20. 17:15Whats next
21. 17:36Parallel Applications Workshop
22. 18:08Introductions