Overview
Background
- Penn State U./National Center for Atmospheric Research Mesoscale Model (MM5)
- Large institutionally diverse user community: forecasting, climate, air-quality, strorm research, basic atmospheric research
- Developed and run on Cray Vector and Vector Multitask machines; more recent platforms: workstations, SMPs, and DSM architectures
- No official scalable-distributed memory parallel option
- Previous Argonne efforts
- MPMM and MM90 developed and widely distributed
- Dynamic load balancing, nesting on so-called MPP parallel computers (Intel Delta/Paragon, IBM SP2, Cray T3D/E, … )
- Efficient, scalable, well structured from a software point of view (esp. MM90), and virtually impossible to maintain with respect to NCAR model.
- Current Effort: MM5e
- Produce a version of the model that runs efficiently on DM architectures, but that is so close to the official MM5 model that it can be incorporated into and maintained as part of the official version of the model.
- IBM funded collaboration between Argonne and Applied Parallel Research Inc.