Implementation of a Monte Carlo algorithm for neutron transport on a massively parallel SIMD machine

Conference · Tue Dec 31 23:00:00 EST 1991

OSTI ID:6818068

Baker, R S

We present some results from the recent adaptation of a vectorized Monte Carlo algorithm to a massively parallel architecture. The performance of the algorithm on a single processor Cray Y-MP and a Thinking Machine Corporations CM-2 and CM-200 is compared for several test problems. The results show that significant speedups are obtainable for vectorized Monte Carlo algorithms on massively parallel machines, even when the algorithms are applied to realistic problems which require extensive variance reduction. However, the architecture of the Connection Machine does place some limitations on the regime in which the Monte Carlo algorithm may be expected to perform well.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6818068
• Report Number(s): LA-UR-92-4364; CONF-930404--2; ON: DE93005461
• Country of Publication: United States
• Language: English

Related Subjects

663610* -- Neutron Physics-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
ARRAY PROCESSORS
CALCULATION METHODS
COMPARATIVE EVALUATIONS
EVALUATION
MATHEMATICAL LOGIC
MONTE CARLO METHOD
NEUTRAL-PARTICLE TRANSPORT
NEUTRON TRANSPORT
PROGRAMMING
RADIATION TRANSPORT
VECTOR PROCESSING