Gerald Collom

Optimizing Irregular Communication with Neighborhood Collectives and Locality-Aware Parallelism

Irregular communication often limits both the performance and scalability of parallel applications. Typically, applications individually implement irregular messages using point-to-point...

A More Scalable Sparse Dynamic Data Exchange

Parallel architectures are continually increasing in performance and scale, while underlying algorithmic infrastructure often fail to take full advantage of available compute power. Within the...

Optimizing Neighbor Collectives with Topology Objects

Optimizing Irregular Communication with Neighborhood Collectives and Locality-Aware Parallelism

A More Scalable Sparse Dynamic Data Exchange

Persistent and Partitioned MPI for Stencil Communication

Many parallel applications rely on iterative stencil operations, whose performance are dominated by communication costs at large scales. Several MPI optimizations, such as persistent and...