A Tool for the Development of Meta-Applications Supporting Several Message-Passing Programming Environments

This paper presents the extensions made to WAMM (Wide Area Metacomputer Manager) in order to manage a metacomputer composed of hosts on which several message-passing programming environments run. Initially, WAMM only permitted the execution of meta-applications consisting of PVM components. To allow the execution of meta-applications composed of PVM and MPI tasks, WAMM has been extended by means of PLUS. PLUS is one of the main components of the MOL Project. It provides an efficient, easy-to-use interface among various communication libraries. The paper is organized as follows: after the introduction, Sections 2 and 3 describe WAMM and PLUS respectively. Section 4 presents some implementation details related to the new WAMM functionalities, and Section 5 describes some performance measurements related to the new version of WAMM. Section 6 concludes the paper.