12 citations · 20 across the 4 of their papers we have counts for
4 papers · 1 filter
Efficient Process-to-Node Mapping Algorithms for Stencil Computations
Sascha Hunold, Konrad von Kirchbach, Markus Lehr +2
Good process-to-compute-node mappings can be decisive for well performing HPC applications. A special, important class of process-to-node mapping problems is the problem of mapping…
Tuning MPI Collectives by Verifying Performance Guidelines
Sascha Hunold, Alexandra Carpen-Amarie
MPI collective operations provide a standardized interface for performing data movements within a group of processes. The efficiency of collective communication operations depends…
MPI Derived Datatypes: Performance Expectations and Status Quo
Alexandra Carpen-Amarie, Sascha Hunold, Jesper Larsson Träff
We examine natural expectations on communication performance using MPI derived datatypes in comparison to the baseline, "raw" performance of communicating simple, non-contiguous da…
Message-Combining Algorithms for Isomorphic, Sparse Collective Communication
Jesper Larsson Träff, Alexandra Carpen-Amarie, Sascha Hunold +1
Isomorphic (sparse) collective communication is a form of collective communication in which all involved processes communicate in small, identically structured neighborhoods of oth…