Research Projects

Simulation Framework | Software Engineering | Physics Modeling | Verification & Validation

Software Engineering

Scalability study for CITS LES Code. CDP	Scalability study for CITS RANS Code. TFLO

Scalability has been extensively pursued at the Center. Tests have been performed on several platforms; dedicated ALC runs (1,800 CPUs) have demonstrated nearly perfect scalability for TFLO. CDP demonstrated good scalability to 1350 processors. Code I/O has also received considerable attention; both CDP and TFLO use native MPI I/O procedures and have demonstrated I/O rates of 150Mb/sec or greater on a variety of problem sizes. TFLO now uses SubArray types to avoid multiple small requests when writing blocks, and demonstrated writing at 150 MB/s on ALC.

In CDP, after preprocessing, refinement or load-balancing, a new set of restart files must be written based on the data on several processors. CDP uses a coloring algorithm to produce sub-communicators, and then collective writes from Indexed type

On the streaming side, a new hierarchical programming language that makes it significantly easier to develop applications for exposed-communication architectures has been developed. Also a detailed architectural design of a stream processor was completed.