PolylithQ

1. Name:
   PolylithQ

2. Source:
   University of Colorado Arcadia Project.

3. Brief description:
   PolylithQ is a re-implementation of the University of Maryland Polylith 2.1 system but using Q for its underlying IPC. It provides essentially the same functionality as Polylith 2.1 but adds the following capabilities.
   • Compatibility with other Q based distributed programs.
   • All connections direct but with no loss of functionality.
   • Richer type system.
   • Better Ada support.

4. Evaluation against applicable general dimensions:
   1. Availability: commercial/licensed/public domain
      Public domain.

   2. Cost:
      None; it is available via anonymous FTP.

   3. Degree of support/maturity/testing/usage:
      This was constructed as an experiment to compare Q and Polylith. No support will be provided except that bugs will be fixed.

   4. Speed:
      Speed is comparable with Polylith 2.1.

   5. Computing platforms:
      It is known to work on Sparcs running Solaris 1. Required Support Systems: Q.

   6. Language compatibilities:
      It is written in C; an Ada interface is also available.

   7. Footprint:
      1. Source and binary: 2 MB (not including Q)

   8. Openness/integrability/source availability:
      Source is freely available.

   9. Extensibility:
      Unknown.

   10. Pedigree:
       Developed by the ARPA sponsored Prototech project.

5. Contact person(s)

   Dennis Heimbigner
   Computer Science Dept.
   University of Colorado
   Boulder, CO 80309-0430
   dennis@cs.colorado.edu
   (303) 492-6643
   (303) 492-2844 - fax

6. Pointers to literature, demos, etc.:
   Via anonymous ftp to ftp.cs.colorado.edu (128.138.243.151)
   File: /pub/cs/techreports/distribs/arcadia/PolylithQ.tar.Z (source)