The document discusses GraalVM, a dynamic just-in-time compiler that enhances JVM performance by enabling interoperability among multiple programming languages. It details GraalVM's features such as native image generation, ahead-of-time compilation, and support for various programming languages, while also addressing limitations and future developments. The author, Alberto de Ávila Hernández, emphasizes the potential for improved performance and system independence in multi-language applications.

1. Salenda
GraalVM
with Groovy & Kotlin
Alberto De Ávila Hernández

2. A B O U T M E
✴ Team Lead at Salenda
✴ Groovy & Grails dev
✴ Atlassian certified
@alberto_deavila

3. DISCLAIMER

4. Goals

5. G O A L S
✴ Increase our JVM performance
✴ Future of JVM
✴ Programming languagues interoperability
✴ System independence
✴ Serverless
@alberto_deavila

6. ✴ GraalVM & features
✴ Show me more code
✴ Limits using GraalVM
✴ Future
S U M M A RY
@alberto_deavila

7. GraalVM

8. @alberto_deavila
first... what is Graal?

9. G R A A L
@alberto_deavila
A dynamic just-in-time compiler that
improves efficiency and speed

10. G R A A L
@alberto_deavila
A (JIT) compiler for Java transforms
bytecode to machine code

11. G R A A L
@alberto_deavila Source: https://www.dynatrace.com/news/blog/new-ways-introducing-compiled-code-java-9/

12. G R A A LV M A R Q U I T E C T U R E
@alberto_deavila Source: https://res.infoq.com/presentations/polyglot-jvm-graal/en/slides/sl13.jpg

13. @alberto_deavila
then... what is GraalVM?

14. G R A A LV M
@alberto_deavila
Ecosystem and shared runtime offering
performance advantages to multiples
languages

15. G R A A LV M
@alberto_deavila Source: https://www.graalvm.org/docs/

16. S U P P O R T E D L A N G U A G E S
@alberto_deavila
✴ Native support:
✴ Support with installations: Ruby, Python, R
✴ JVM languages: Groovy, Kotlin, Java...
✴ LLVM: C, C++
✴ Javascript

17. ✴ Graal: the JIT compiler
✴ Graal Polyglot APIs: API to combine
programming languages
✴ Graal SDK: embedding Graal and configure
native images
✴ Oracle HotSpot JVM
G R A A LV M
@alberto_deavila

18. @alberto_deavila
License

19. ✴ Community edition: free to use
✴ Enterprise edition: Oracle support
G R A A L L I C E N S E
@alberto_deavila

20. @alberto_deavila
Features

21. ✴ Interoperate with other languages
✴ Includes consoles for JS, R...
✴ Create compiled native images
✴ Run code faster & efficiently
✴ Tools to monitor, debug, and profile code
G R A A LV M F E AT U R E S
@alberto_deavila

22. @alberto_deavila
Interoperability

23. @alberto_deavila
How can we achieve that?

24. @alberto_deavila
Truffle

25. ✴ Framework
✴ Allow to create languages interpreters
✴ Based on annotations
✴ Contains common things across any
language
G R A A LV M T R U F F L E
@alberto_deavila

26. G R A A LV M T R U F F L E
@alberto_deavila Source: https://res.infoq.com/presentations/polyglot-jvm-graal/en/slides/sl13.jpg

27. G R A A LV M I N T E R O P E R A B I L I T Y
@alberto_deavila
JS RubyPython
Source: https://www.graalvm.org/docs/reference-manual/polyglot/

28. G R A A LV M I N T E R O P E R A B I L I T Y
@alberto_deavila
JS RubyPython
Source: https://www.graalvm.org/docs/reference-manual/polyglot/

29. G R A A LV M I N T E R O P E R A B I L I T Y
@alberto_deavila
JS RubyPython
Source: https://www.graalvm.org/docs/reference-manual/polyglot/

30. G R A A LV M I N T E R O P E R A B I L I T Y
@alberto_deavila
Node with R
Source: https://docs.google.com/presentation/d/1cBuq4rjaNTOMJOOeGvqnI2TJjWH2VBId7NtVVhXWJkY/edit#slide=id.g495524223b_0_179

31. ✴ Use the appropiate languague for any task
✴ Use libraries from differents languagues
✴ Create apps combining languages
✴ One environment for all requirements
G R A A LV M I N T E R O P E R A B I L I T Y
@alberto_deavila

32. @alberto_deavila
Native images

33. ✴ Self-contained executable
✴ Fast startup
✴ Low memory consumption
✴ Can generate binary library
✴ Useful for lambdas, containers or command
line
G R A A LV M N AT I V E I M A G E S
@alberto_deavila

34. G R A A LV M N AT I V E I M A G E S
@alberto_deavila
GraalVM can generate native images BUT
not yet cross platform
Source: https://github.com/oracle/graal/issues/407

35. @alberto_deavila
Ahead-of-time compilation

36. ✴ Analyze statically all code
✴ Compile reachable code
✴ Generates native code
✴ Package it with SubstrateVM
G R A A LV M A O T C
@alberto_deavila

37. ✴ Framework subset of JVM
✴ No JIT
✴ No optimization
✴ No Graal neither any related with bytecode
✴ Just runtime: GC, threads, I/O, ...
G R A A LV M S U B S T R AT E V M
@alberto_deavila

38. G R A A LV M N AT I V E I M A G E S
@alberto_deavila Source: https://twitter.com/cstancu/status/1103413247305166849

39. @alberto_deavila
Performance

40. ✴ Depends on code optimizations
✴ Native images startup time is very fast
✴ Each languague has different perfomance
G R A A LV M P E R F O R M A N C E
@alberto_deavila

41. G R A A LV M P E R F O R M A N C E
@alberto_deavila Source: https://lafo.ssw.uni-linz.ac.at/pub/papers/2016_PLDI_Truffle.pdf

42. G R A A LV M P E R F O R M A N C E
@alberto_deavila Source: https://2017.jokerconf.com/en/2017/talks/3qdblcadmqy0me2uuieqaq/
Twitter performance using Graal

43. @alberto_deavila
Tools

44. ✴ Use one debugger for all languages, like
chrome-dev-tools
✴ VisualVM to show stats about other
languages
G R A A LV M T O O L S
@alberto_deavila

45. G R A A LV M T O O L S
@alberto_deavila Source: https://github.com/chrisseaton/graalvm-ten-things#5-tools-that-work-across-all-languages

46. G R A A LV M T O O L S
@alberto_deavila Source: https://github.com/chrisseaton/graalvm-ten-things#5-tools-that-work-across-all-languages

47. Show me more code

48. @alberto_deavila
Setup

49. ✴ Download manually
✴ Use SDKman
✴ Docker
G R A A LV M S E T U P
@alberto_deavila

50. @alberto_deavila
SDKMAN!

51. ✴ Install SDKMAN!
✴ Download GraalVM
G R A A LV M S E T U P W I T H S D K M A N !
@alberto_deavila

52. @alberto_deavila
Factorial

53. Limitations

54. ✴ Evaluate static code at compile time
✴ No dynamic code
✴ Some strange exceptions appears
✴ Take long time to generate executable
✴ Only for Mac/Linux/Win 64 bits
L I M I TAT I O N S
@alberto_deavila

55. @alberto_deavila
Kotlin

56. K O T L I N L I M I TAT I O N S
@alberto_deavila Source: https://github.com/oracle/graal/issues/366#issuecomment-383547970
✴ Almost all features work
✴ Some bugs / features to work, like:
✴ Does not support compilation of non-
reducible loops

57. @alberto_deavila
Groovy

58. ✴ Sometimes requires lot of changes / rewrite
✴ No metaprogramming
✴ Closures requires manual config
✴ Grape doesn't work on standalone native
images
G R O O V Y L I M I TAT I O N S
@alberto_deavila

59. L I M I TAT I O N S
@alberto_deavila Source: https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md

60. Future

61. F U T U R E
@alberto_deavila
✴ More languages and tools will be available
✴ Apps with many languages working
✴ A native image compatible with all OS
✴ Better perfomance
✴ ...

62. M O R E I N F O
@alberto_deavila
✴ Offial Doc
✴ List of resources for Graal and related topics
✴ Videos and presentations
✴ Top 10 things to do with GraalVM
✴ Kotlin performance with GraalVM

64. We are hiring Groovy Devs!
Email me at:
aavila@adaptavist.com

65. Thank you!