ARMI: A high level communication library for STAPL

Nathan Thomas, Steven Saunders, Tim Smith, Gabriel Tanase, Lawrence Rauchwerger

Research output: Contribution to journalArticlepeer-review


ARMI is a communication library that provides a framework for expressing fine-grain parallelism and mapping it to a particular machine using shared-memory and message passing library calls. The library is an advanced implementation of the RMI protocol and handles low-level details such as scheduling incoming communication and aggregating outgoing communication to coarsen parallelism. These details can be tuned for different platforms to allow user codes to achieve the highest performance possible without manual modification. ARMI is used by STAPL, our generic parallel library, to provide a portable, user transparent communication layer. We present the basic design as well as the mechanisms used in the current Pthreads/OpenMP, MPI implementations and/or a combination thereof. Performance comparisons between ARMI and explicit use of Pthreads or MPI are given on a variety of machines, including an HP-V2200, Origin 3800, IBM Regatta and IBM RS/6000 SP cluster.

Original languageEnglish (US)
Pages (from-to)261-280
Number of pages20
JournalParallel Processing Letters
Issue number2
StatePublished - Jun 2006
Externally publishedYes


  • Communication library
  • MPI
  • OpenMP
  • Pthreads
  • RMI
  • Run-time system

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture


Dive into the research topics of 'ARMI: A high level communication library for STAPL'. Together they form a unique fingerprint.

Cite this