Hello, A change in allocation has been requested: Requester: larson (Jay Larson) Project: CouplingMechOpt Title: Mechanics and Optimization of Coupling in Multiphysics and Mulitscale Systems Description: Coupled systems--both multiscale and multiphysics--are increasingly relevant to modeling for basic scientific research and for highly applied engineering applications. The advent of ultrascale platforms comprising up to million-way parallelism begs the question: What kind of applications are amenable to this monumental computational capability, and how might we use this unprecedented computational power efficiently? Multiphysics and multiscale models comprising multiple subsystems in mutual interaction are a likely application for these platforms. The challenge then becomes developing infrastructure for managing what are likely to be time-evolving component loads while minimizing processor idle time in components awaiting coupling input from other components. As a first step towards a solution for intercomponent load management for parallel coupled models, we are developing a mechanism for multicomponent load management that includes support for dynamical resizing of component cohorts at runtime. The framework is built to complement and extend the Model Coupling Toolkit (MCT; http://mcs.anl.gov/mct), key coupling middleware used most notably in the Community Climate System Model. The resource requested is for prototyping of the aforementioned intercomponent load management system, and extensive sanity and performance testing of the system in a set of use cases ranging from simple “toy” problems up to (assuming all goes well) a coupled climate model such as CCSM. MCT is highly portable and routinely compiles/runs on fusion. MCT uses MPI and any Fortran compiler available on fusion. We expect we may need only minimal system consulting support to perform the work outlined. We are requesting access to fusion so that we have a medium-sized cluster to test out ideas and code. Typical job sizes would require small numbers of processors (<=64) for periods of 15 minutes or less; larger jobs would run for correspondingly shorter periods. Current: undetermined amount Justification: N/A Requested: 30000 A specific reason has been given: The reason for this request is that we have already used so much of our current allocation that we are unable to continue experiments. Could you please allocate us some more time ASAP as we are hoping to do some scalability experiments for a paper that must be submitted to ICCS 2011 by 15 January? Thanks and all the best... Jay Larson (PI, CouplingMechOpt) This needs to be approved and the final allocation amount decided upon. Thank You, The LCRC Accounts System