BibTeX Export

@INPROCEEDINGS{Calotoiu_ea:2012:CollectivesDetection,
     author = {Calotoiu, Alexandru and Siebert, Christian and Wolf, Felix},
   keywords = {collective operations, HPL, MPI, performance optimization},
      month = aug,
      title = {Pattern-Independent Detection of Manual Collectives in {MPI} Programs},
  booktitle = {Proc. of the 18th Euro-Par Conference, Rhodes Island, Greece},
     series = {Lecture Notes in Computer Science},
     volume = {7484},
       year = {2012},
      pages = {28--39},
  publisher = {Springer},
   location = {Berlin / Heidelberg},
       issn = {0302-9743},
       isbn = {978-3-642-32819-0},
        doi = {10.1007/978-3-642-32820-6_5},
   abstract = {In parallel applications, a signicant amount of communication
occurs in a collective fashion to perform, for example, broadcasts,
reductions, or complete exchanges. Although the MPI standard defines
many convenience functions for this purpose, which not only improve
code readability and maintenance but are usually also highly efficient,
many application programmers still create their own, manual implementations
using point-to-point communication. We show how instances of
such hand-crafted collectives can be automatically detected. Matching
pre- and post-conditions of hashed message exchanges recorded in event
traces, our method is independent of the specific communication pattern
employed. We demonstrate that replacing detected broadcasts in
the HPL benchmark can yield significant performance improvements.}
}