chrislemaire/graphalytics-platforms-powergraph

Graphalytics implementation for PowerGraph

Graphalytics PowerGraph platform extension

Getting started

Please refer to the documentation of the Graphalytics core (graphalytics repository) for an introduction to using Graphalytics.

The following dependencies are required for this platform extension (in parentheses are the recommended versions):

• Any C compiler (gcc 5.2.1)
• PowerGraph (2.2)
• CMake (3.2.2)
• GNU Make (4.0)
• OpenMPI or MPICH2 (if using PowerGraph distributed)

Download PowerGraph, unpack into any directory, patch the missing CMakeLists.txt file using a diff from bin/utils/ and fully compile/build using the instructions given by the authors. Note that Graphalytics does not support HDFS as data source for PowerGraph, so it is recommended to compile with the --no_jvm flag.

Alternatively, one may use the build-distribution.sh script that performs the steps described above in an automated fashion.

Finally, refer to the documentation of the Graphalytics core on how to build and run this platform repository.

PowerGraph-implementation-specific configuration

Edit config/powergraph.properties to change the following settings:

• platform.powergraph.home: Set to the root directory where PowerGraph has been installed.
• platform.powergraph.num-threads: Set the number of threads PowerGraph should use.
• platform.powergraph.nodes: Set the the names of computation nodes, with format e.g., "10.149.0.55,10.149.0.56";

Known Issues

• PowerGraph does not support machines with more than 64 threads. A workaround has been proposed in this issue.
• The PowerGraph installation process is somewhat outdated, it has a few broken links to dependencies. Patching the CMakeLists.txt file with our diff fixes these broken URIs.