Constellation

Copyright 2019 Vrije Universiteit Amsterdam The Netherlands eScience Center

What problem does Constellation solve?

The scientific computing landscape is becoming more and more complex. Traditional supercomputers and clusters, grid and cloud infrastructures, many-core technologies, data distribution, specific hardware availability, software heterogeneity, they all contribute to this complexity, and often force scientists to use multiple computing platforms simultaneously.

Constellation is a software platform/library specifically aimed at distributed, heterogeneous and hierarchical computing environments. In Constellation, applications consist of several distinct (but somehow related) activities. These activities can be implemented independently using existing, well understood tools (e.g. MPI, CUDA, etc.). Constellation is then used to construct the overall application by coupling the distinct activities. Using application defined labels in combination with context-aware work stealing, Constellation provides a simple and efficient mechanism for automatically mapping the activities to the appropriate resources, taking data locality and heterogeneity into account.

Additional text: TODO

Downloading and building Constellation

Constellation is available from its repository at Github: https://github.com/nlesc/constellation. To download and build:

bash git clone https://github.com/nlesc/constellation.git cd constellation ./gradlew jar

To run some tests: bash ./gradlew test ./gradlew integrationTest

Adding Constellation as a dependency to your project

To include Constellation as a dependency for Gradle, use:

gradle allprojects { repositories { jcenter() } }

and

```gradle dependencies { compile 'nl.junglecomputing:constellation:2.0.0' }

```

For Maven, use:

maven <repositories> <repository> <id>jcenter</id> <url>https://jcenter.bintray.com</url> </repository> </repositories>

and

maven <dependency> <groupId>nl.junclecomputing</groupId> <artifactId>constellation</artifactId> <version>2.0.0</version> </dependency>

Documentation

Constellation's Javadoc is available from the JCenter repository, as a separate jar, here.

Legal

The Constellation library is copyrighted by the Netherlands eScience Center and released under the Apache License, Version 2.0. A copy of the license may be obtained from http://www.apache.org/licenses/LICENSE-2.0.