XC: Scala DSL implementation

XC/Scala is a Scala-internal domain-specific language (DSL) implementation of the XC research language for distributed adaptive computing.

Overview

• Where? The source code of the implementation can be found under src/main/scala, package xc
• What? The DSL implementation includes the components described in the paper, namely:
  • xc.NValues#NValue: data structure modelling a neighbouring value
  • xc.XCLang and xc.XCLangImpl: interface with the XC constructs and corresponding implementation class
  • xc.XCLib: provides reusable functions (building blocks) upon XCLang; examples include collect, broadcast, distanceTo (see examples in the paper)
  • xc.XCProgram: class to be specialised and implemented (main method) in order to define an XC program
  • xc.examples.Gradient: shows a concrete XC program computing a "gradient" (each node of the system eventually computes the minimum distance from the closest "source" node). This is especially illustrative since it shows a simple implementation of a "complete system" where communication is simulated by writing on shared state. However, please notice that the synchronous execution is a simplification: the devices of an XC system may run concurrently and communications can be completely asynchronous.
• How??
  • Run ./gradlew run (Linux) or gradlew.bat run (Windows) to execute an XC system of interacting devices computing a program
    • Prerequisites: Java 11 (e.g., using Jabba: jabba use adopt@1.11.28-0)
  • Take a look at xc.examples.GradientMain to get a sense of the execution model

License

See the LICENSE file.