Using Simulation to Evaluate the Performance of Resilience Strategies at Scale.
Abstract not provided.
Levy, Scott N.↗
Engineering topics
Mondragon, Oscar
Publications and source records attributed to Mondragon, Oscar.
How I Learned to Stop Worrying and Love In Situ Analytics:Leveraging latent synchronization in MPI collective algorithms.
Abstract not provided.
Levy, Scott N.↗
Hobbes: A Multi‐Stack Approach for Application Composition and Performance Isolation.
Abstract not provided.
Pedretti, Kevin↗
Quantifying Scheduling Challenges for Exascale System Software
The move towards high-performance computing (HPC) ap- plications comprised of coupled codes and the need to dra- matically reduce data movement is leading to a reexami- nation of time-sharing vs. space-sharing in HPC systems. In this paper, we discuss and begin to quantify the perfor- mance impact of a move away from strict space-sharing of nodes for HPC applications. Specifically, we examine the po- tential performance cost of time-sharing nodes between ap- plication components, we determine whether a simple coor- dinated scheduling mechanism can address these problems, and we research how suitable simple constraint-based opti- mization techniques are for solving scheduling challenges in this regime. Our results demonstrate that current general- purpose HPC system software scheduling and resource al- location systems are subject to significant performance de- ciencies which we quantify for six representative applica- tions. Based on these results, we discuss areas in which ad- ditional research is needed to meet the scheduling challenges of next-generation HPC systems.
C.1.2 [Multiprocessors]: Parallel Processors↗