Parallel Parallel
Tools Project

MRNet 1.0 Features

• Flexible Organization:
  MRNet process tree organization is specified in a configuration file that can specify common network layouts like k-ary and k-nomial trees, or custom layouts tailored to the system(s) running the tool.
• Scalable, Flexible Data Aggregation:
  MRNet's built-in filters provide efficient computation of averages, sums, concatenation, and other common data reductions. Custom filters can be loaded dynamically into the network to perform tool-specific aggregation operations.
• High-bandwidth Communication:
  MRNet transfers data within the tool system using an efficient, packed binary representation. Zero-copy data paths are used whenever possible to reduce the cost of transferring data through internal processes.
• Scalable Multicast:
  MRNet supports efficient message multicast to reduce the cost of issuing control requests from the tool front-end to its back-ends.
• Multiple Concurrent Data Channels:
  MRNet supports multiple logical streams of data between tool components. Data aggregation and message multicast takes place within the context of a data stream, and multiple operations (both upward and downward) can be active simultaneously.
• Open Source Licensing.