Charm++ - History

History

Charm++ was developed at the Parallel Programming Laboratory, University of Illinois, by Wennie Shu and Kevin Nomura working with Laxmikant Kale. The second prototype was called Chare Kernel(2.0) was written by Manish Gupta. Charm(3.0) had significant design changes and was developed by a team consisting of Attila Gürsoy, Balkrishna Ramkumar, Amitabh B. Sinha, and Laxmikant Kale. A new translator was written by Nimish Shah. Sanjeev Krishnan made the Charm++ implementation. Charm(4.0) included Charm++. It was released in fall 1993. Charm(4.5) was developed by Attila Gürsoy, Sanjeev Krishnan, Milind Bhandarkar, Joshua Yelon, Narain Jagathesan, and Laxmikant Kale. The same team also developed Charm(4.8) that included Converse, a parallel runtime system that allows interoperability among modules that were written using different paradigms within a single application. After that, the Charm++ runtime system was re-targeted at Converse. Syntactic extensions in Charm++ were dropped, and a simple interface translator was developed (by Sanjeev Krishnan and Jay DeSouza), which became the Charm++ language. The version is 5.8 Revision 1 includes

  1. completely rewritten runtime system and the interface translator (done by Milind Bhandarkar).
  2. several new features such as Chare Arrays (developed by Robert Brunner and Orion Lawlor), and
  3. various libraries (written by Terry Wilmarth, Gengbin Zheng, Laxmikant Kale, Zehra Sura, Milind Bhandarkar, Robert Brunner, and Krishnan Varadarajan.)

After that, a coordination language “Structured Dagger” has been implemented on top of Charm++ by Milind Bhandarkar that was included in this version. Several features have also been added to Converse. Dynamic seed-based load balancing has been implemented (Terry Wilmarth and Joshua Yelon), a client-server interface for Converse programs, and debugging support has been added (Parthasarathy Ramachandran, Jeff Wright, and Milind Bhandarkar). Converse has been ported to new platforms including ASCI Red (Joshua Yelon), Cray T3E (Robert Brunner), and SGI Origin2000 (Milind Bhandarkar). There exists also a test suite for Charm++ developed by Michael Lang, Jackie Wang, and Fang Hu. Projections, the performance visualization and analysis tool, was redesigned and rewritten using Java by Michael Denardo. Orion Lawlor, Gengbin Zheng, and Milind Bhandarkar are responsible for changes to the system since the last release.

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