A new major hwloc release candidate 2.2.0 was published. It brings several small improvements while waiting for much larger changes in 2.3.0 in a couple months.
Ana Gainaru from Vanderbilt University (TN, USA) will present a talk entitled “HPC for All: Easy deployment for heterogeneous dynamic applications.”
Guillaume Mercier defended his habilitation on December 4th.
His habilitation is entitled “Challenges of Message Passing Evolution and Management of Hierarchical
Cartesian Collective Communication “Advice to users”, “Advice to implementers”, and “Advice to Standardizers”
Cartesian Collective Communication (or stencil communication) is a restricted form of general, sparse, graph neighborhood collective communication as known in for instance MPI. The prime charactistic of Cartesian Collective Communication is that processes organized in a d-dimensional torus (or mesh) all communicate with the same, relative set of neighbors. In the talk, we discuss how Cartesian Collective Communication can be incorporated and used in MPI, giving both “advice to users”, “advice to implementers”, and “advice to standardizers”. We also present new, message-combining algorithms for efficiently supporting Cartesian Collective alltoall and allgather Communication (for small problems), and give of experimental results showing that this form of sparse collective communication can be supported with a performance advantage.
On November 4th, Laercio LIME PILLA, CNRS researcher at LRI (Paris) will present us his recent works about load-balancing in distributed environments.
The talk will take place in room Grace Hopper 2 at 4pm.
Slides of the talks can be found here:
Philippe Swartvagher will work on interactions between high performance communication libraries and task-based runtime systems.
Francieli Zanon Boito is now assistant professor at University of Bordeaux. Her research interests include storage and parallel I/O for high performance computing and big data.