Parallel algorithms for continuum dynamics
Simply porting existing parallel programs to a new parallel processor may not achieve the full speedup possible; to achieve the maximum efficiency may require redesigning the parallel algorithms for the specific architecture. The authors discuss here parallel algorithms that were developed first for the HEP processor and then ported to the CRAY X-MP/4, the ELXSI/10, and the Intel iPSC/32. Focus is mainly on the most recent parallel processing results produced, i.e., those on the Intel Hypercube. The applications are simulations of continuum dynamics in which the momentum and stress gradients are important. Examples of these are inertial confinement fusion experiments, severe breaks in the coolant system of a reactor, weapons physics, shock-wave physics. Speedup efficiencies on the Intel iPSC Hypercube are very sensitive to the ratio of communication to computation. Great care must be taken in designing algorithms for this machine to avoid global communication. This is much more critical on the iPSC than it was on the three previous parallel processors.
- Research Organization:
- Michigan Technological Univ., Houghton (USA)
- OSTI ID:
- 6928415
- Report Number(s):
- CONF-8711195-
- Journal Information:
- Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 55; ISSN TANSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Performance of a plasma fluid code on the Intel parallel computers
Programming abstractions for run-time partitioning of scientific continuum calculations running on multiprocessors
Related Subjects
220900* -- Nuclear Reactor Technology-- Reactor Safety
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
ACCIDENTS
ALGORITHMS
COMPUTERS
CONFINEMENT
CRAY COMPUTERS
INERTIAL CONFINEMENT
LOSS OF COOLANT
MATHEMATICAL LOGIC
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PARALLEL PROCESSING
PLASMA CONFINEMENT
POWER PLANTS
PROGRAMMING
REACTOR ACCIDENTS
REACTOR SAFETY
SAFETY
SHOCK WAVES
THERMAL POWER PLANTS
THERMONUCLEAR REACTORS