Runtime checking of datatype signatures in MPI

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The MPI standard provides a way to send and receive complex combinations of datatypes (e.g., integers and doubles) with a single communication operation. The MPI standard specifies that the type signature, that is, the basic datatypes (language-defined types such as int or DOUBLE PRECISION), must match in communication operations suchas send/receive or broadcast. Because datatypes may be defined by the user in MPI, there is a limitless collection of possible type signatures. Detecting the programmer error of mismatched datatypes is difficult in this case; detecting all errors essentially requires sending a complete description of the type signature with a message. This paper discusses analternative: send the value of a function of the type signature so that (a)identical type signatures always give the same function value, (b) different type signatures often give different values, and (c) common cases(e.g., predefined datatypes) are handled exactly. Thus, erroneous programs are often (but not always) detected; correct programs never are flagged as erroneous. The method described is relatively inexpensive to compute and uses a small (and fixed, independent of the complexity ofthe datatype) amount of space in the message envelope.

Original languageEnglish (US)
Title of host publicationRecent Advances in Parallel Virtual Machine and Message Passing Interface - 7th European PVM/MPI Users’ Group Meeting, Proceedings
EditorsJack Dongarra, Peter Kacsuk, Norbert Podhorszki
Number of pages8
ISBN (Print)3540410104, 9783540410102
StatePublished - 2000
Externally publishedYes
Event7th European Parallel Virtual Machine and Message Passing Interface Users’ Group Meeting, PVM/MPI 2000 - Balatonfured, Hungary
Duration: Sep 10 2000Sep 13 2000

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other7th European Parallel Virtual Machine and Message Passing Interface Users’ Group Meeting, PVM/MPI 2000

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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