Integration of abinitio nuclear calculation with derivative free optimization technique
Abstract
Optimization techniques are finding their inroads into the field of nuclear physics calculations where the objective functions are very complex and computationally intensive. A vast space of parameters needs searching to obtain a good match between theoretical (computed) and experimental observables, such as energy levels and spectra. Manual calculation defies the scope of such complex calculation and are prone to error at the same time. This body of work attempts to formulate a design and implement it which would integrate the ab initio nuclear physics code MFDn and the VTDIRECT95 code. VTDIRECT95 is a Fortran95 suite of parallel code implementing the derivativefree optimization algorithm DIRECT. Proposed design is implemented for a serial and parallel version of the optimization technique. Experiment with the initial implementation of the design showing good matches for several singlenucleus cases are conducted. Determination and assignment of appropriate number of processors for parallel integration code is implemented to increase the efficiency and resource utilization in the case of multiple nuclei parameter search.
 Authors:

 Iowa State Univ., Ames, IA (United States)
 Publication Date:
 Research Org.:
 Ames Laboratory (AMES), Ames, IA (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC)
 OSTI Identifier:
 972077
 Report Number(s):
 IST 2915
TRN: US1001464
 DOE Contract Number:
 AC0207CH11358
 Resource Type:
 Thesis/Dissertation
 Country of Publication:
 United States
 Language:
 English
 Subject:
 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ALGORITHMS; DESIGN; EFFICIENCY; ENERGY LEVELS; IMPLEMENTATION; NUCLEAR PHYSICS; NUCLEI; OPTIMIZATION; SPECTRA
Citation Formats
Sharda, Anurag. Integration of abinitio nuclear calculation with derivative free optimization technique. United States: N. p., 2008.
Web. doi:10.2172/972077.
Sharda, Anurag. Integration of abinitio nuclear calculation with derivative free optimization technique. United States. https://doi.org/10.2172/972077
Sharda, Anurag. Tue .
"Integration of abinitio nuclear calculation with derivative free optimization technique". United States. https://doi.org/10.2172/972077. https://www.osti.gov/servlets/purl/972077.
@article{osti_972077,
title = {Integration of abinitio nuclear calculation with derivative free optimization technique},
author = {Sharda, Anurag},
abstractNote = {Optimization techniques are finding their inroads into the field of nuclear physics calculations where the objective functions are very complex and computationally intensive. A vast space of parameters needs searching to obtain a good match between theoretical (computed) and experimental observables, such as energy levels and spectra. Manual calculation defies the scope of such complex calculation and are prone to error at the same time. This body of work attempts to formulate a design and implement it which would integrate the ab initio nuclear physics code MFDn and the VTDIRECT95 code. VTDIRECT95 is a Fortran95 suite of parallel code implementing the derivativefree optimization algorithm DIRECT. Proposed design is implemented for a serial and parallel version of the optimization technique. Experiment with the initial implementation of the design showing good matches for several singlenucleus cases are conducted. Determination and assignment of appropriate number of processors for parallel integration code is implemented to increase the efficiency and resource utilization in the case of multiple nuclei parameter search.},
doi = {10.2172/972077},
url = {https://www.osti.gov/biblio/972077},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {1}
}