Random number stride in Monte Carlo calculations
Monte Carlo radiation transport codes use a sequence of pseudorandom numbers to sample from probability distributions. A common practice is to start each source particle a predetermined number of random numbers up the pseudorandom number sequence. This number of random numbers skipped between each source particles the random number stride, S. Consequently, the jth source particle always starts with the j{center dot}Sth random number providing correlated sampling'' between similar calculations. A new machine-portable random number generator has been written for the Monte Carlo radiation transport code MCNP providing user's control of the random number stride. First the new MCNP random number generator algorithm will be described and then the effects of varying the stride will be presented. 2 refs., 1 fig.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6586954
- Report Number(s):
- LA-UR-90-1845; CONF-901101-4; ON: DE90012000
- Resource Relation:
- Conference: American Nuclear Society winter meeting, Washington, DC (USA), 11-15 Nov 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
MONTE CARLO METHOD
RANDOM NUMBER GENERATORS
RADIATION TRANSPORT
ALGORITHMS
COMPUTER ARCHITECTURE
MATHEMATICAL LOGIC
657000* - Theoretical & Mathematical Physics
990200 - Mathematics & Computers