Concurrent multithreaded access to the Message Passing Interface (MPI) is gaining
importance to support emerging hybrid MPI applications. The interoperability between …

The Argo project is a DOE initiative for designing a modular operating system/runtime for the
next generation of supercomputers. A key focus area in this project is power management …

The popularity of Non-Uniform Memory Access (NUMA) architectures has led to numerous
locality-preserving hierarchical lock designs, such as HCLH, HMCS, and cohort locks …

Efforts to mitigate lock contention from concurrent threaded accesses to MPI have reduced
contention through fine-grained locking, avoided locking altogether by offloading …

In this article, we investigate contention management in lock-based thread-safe MPI
libraries. Specifically, we make two assumptions:(1) locks are the only form of …

A portfolio SAT solver has to share clauses in order to be efficient. In a distributed
environment, such sharing implies additional problems: more information has to be …

Graph processing is used in many fields of science such as sociology, risk prediction or
biology. Although analysis of graphs is important it also poses numerous challenges …

Adaptive Mesh Refinement (AMR) is a prevalent method used by distributed-memory
simulation applications to adapt the accuracy of their solutions depending on the turbulent …

User-level threads have been widely adopted as a means of achieving lightweight
concurrent execution without the costs of OS-level threads. Nevertheless, the costs of …

A performance vs. practicality trade-off exists between user-level threading techniques. The
community has settled mostly on a black-and-white perspective; fully fledged threads …