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Improvements in the Vectorization of the KENO V. a Criticality Safety Code

Conference · · Transactions of the American Nuclear Society
OSTI ID:6956914
 [1];  [1];  [2]
  1. University of Tennessee, Knoxville, TN (United States)
  2. Martin Marietta Energy Systems, Oak Ridge, TN (United States)

A version of KENO V.a that takes advantage of the potential speedup inherent in vector processors is being developed at Oak Ridge National Laboratory (ORNL). The current version of KENO V.a tracks an individual particle history from source generation until it either leaks from the system or is killed, at which time the next particle history is processed. A vectorized Monte Carlo code tracks multiple particle histories simultaneously. Several new vectorized Monte Carlo particle-tracking codes have been developed, proving that significant speedups are possible; however, these new codes are either proprietary or not widely used. All new vectorized Monte Carlo Codes use an event-based algorithm in which all the particles undergoing a particular event are processed simultaneously. The vectorized version of KENO V.a currently being developed employs an event-based, event-driven, all-zone, tagged-particle algorithm.

Research Organization:
University of Tennessee, Knoxville, TN (United States); Martin Marietta Energy Systems, Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
OSTI ID:
6956914
Report Number(s):
CONF-920606--
Journal Information:
Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 65; ISSN TANSA; ISSN 0003-018X
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English