GPU621/The Chapel Programming Language
Project Description
The Chapel is a portable, scalable, open-source modern parallel programming language designed to be productive. The Chapel is a high-level programming language that tends to be more human-readable and writable with some similarity to Python. The Chapel's performance can compete or even surpass MPI/OpenMP. This project will introduce the main functionality of Chapel programming language, compare the code and performance to C++ MPI/OpenMP, analysis the pros and cons of the Chapel.
Team Members
Installation
The Chapel is an open-source language that still constantly updates. The latest version as of the creation of this project is 1.23.0 released on October 15, 2020.
There is currently no official support for The Chapel Programming Language in major known IDE like Visual Studio, which is a downside compared to other languages in terms of usability.
Select one of the following options to install The Chapel Programming Language.
Pre-packaged Chapel installations are available for:
- Cray® XC™ systems
- Docker users (Requires to install Docker Engine, available on Linux, MAC, Windows 10)
- Mac OS X Homebrew users
GitHub source code download available here.
Users can also try The Chapel online here, though the version is currently stuck on Chapel 1.20.
The Chapel Programming Language
Main Functionality
//https://chapel-lang.org/docs/primers/
Language Basics
Variables are declared with the var keyword. Variable declarations must have a type, initializer, or both.
var myVariable1: int;
const and param can be used to declare runtime constants and compile-time constants respectively. A const must be initialized in place, but can have its value generated at runtime. A param must be known at compile time.
const myConst: real = sqrt(myVariable2);
param myParam = 3.14;
All three variable kinds can be qualified by the config keyword. This allows the initial value to be overridden on the command line.
config var myVariable2: bool = false; //./variable --myVariable=true
Iterators
Task Parallelism
Locality
Data Parallelism
Library Utilities
Numerical Libraries
Code Comparesion to MPI & OpenMP
Pros and Cons of Using The Chapel
Adoption
Small Number of Contributors
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References
- The Chapel Programming Language official page: https://chapel-lang.org/
- The Chapel Documentation: https://chapel-lang.org/docs/#
- Full-Length Chapel Tutorial: https://chapel-lang.org/tutorials.html
- Learn Chapel in Y Minutes: https://learnxinyminutes.com/docs/chapel/
- Specific Chapel Concepts or Features: https://chapel-lang.org/docs/primers/
- October 2018 Chapel Tutorial: https://chapel-lang.org/tmp/OctTut2018/slides.html
- The Chapel Promotional Video: https://youtu.be/2yye1yJPcsg
- The Chapel Overview Talk Video: https://youtu.be/ko11tLuchvg
- The Chapel Overview Talk Slide: https://chapel-lang.org/presentations/ChapelForHPCKM-presented.pdf