|Program name||Package id||Status||Status date|
|Package ID||Orig. computer||Test computer|
|CCC-0547/007||Many Computers||RISC 6000|
|CCC-0547/008||Linux-based PC,UNIX W.S.,SUN W.S.,HP W.S.,SGI W.S.||Linux-based PC|
CCC-707/ PARTISN (PARallel, TIme-Dependent SN) is the evolutionary successor to DANTSYS and runs on a variety of computer platforms. User input and cross section formats are very similar to that of DANTSYS, and the LANL developers recommend the use of PARTISN.
DANTSYS replaces TWODANT-SYS and includes five major codes. ONEDANT solves the one dimensional multigroup transport equation in plane, cylindrical, spherical and two-angle plane geometries. TWODANT solves the two-dimensional multigroup transport equation in x-y, r-z, and r-theta geometries. TWOHEX solves the two-dimensional multigroup transport equation on equilateral triangular meshes in the x, y plane. THREEDANT solves the three-dimensional multigroup transport equation in x-y-z and r-z-theta geometries. TWODANT/GQ solves the two-dimensional transport equation in x-y and r-z geometries on general quadrilaterals. DANTSYS accepts the basic multigroup cross sections for isotopes, in either of the standard interface files (ISOTXS or GRUPXS) or in a card-image library whose form is referred to as Los Alamos, ANISN, or FIDO. PSR-317/TRANSX2.15 will translate MATXS libraries into these formats. ONEDANT, TWODANT and TWOHEX were included in TWODANT-SYS, THREEDANT and TWODANT/GQ were added to the package in August 1995 with the first public release of DANTSYS. In March 1997 subroutines perr and tolcm were modified to correct a problem of overfilling a string (SITOP).
ONEDANT, TWODANT, TWODANT/GQ and THREEDANT use the discrete ordinates approximation for treating the angular variation of the particle distributions. The diamond difference scheme is used for phase space discretization. In TWODANT and THREEDANT there is an option to use the adaptive weighted diamond method. Both inner and outer iterations are accelerated using the diffusion synthetic acceleration method. TWOHEX uses the discrete ordinates form for treating the angular variation of the particle distribution, and a nodal scheme is used for phase space discretization. Both inner and outer iterations are accelerated using the Chebyshev acceleration method.
Running time for each solver is directly related to problem size and the platform bing used. In ONEDANT a modest sized problem of 30 groups and 100 mesh points runs in less than 2 seconds on a CRAY-YMP. In TWODANT a 31 x 60 mesh, S4, 4 group problem takes 7 seconds on the YMP. In THREEDANT a 32 x 32 x 20 mesh, S8, 4 group problem takes 52 seconds to converge on a YMP and 5 minutes on an IBM RS/6000/590. A four group calculation of the eigenvalue of a midplane whole core model of the Fast Test Reactor took about 20 seconds on a YMP.
|Package ID||Status date||Status|
|CCC-0547/007||22-APR-2002||Tested at NEADB|
|CCC-0547/008||05-NOV-2003||Tested at NEADB|
Standard Interface Files and Procedures for Reactor Physics Codes,
Los Alamos Scientific Laboratory report LA-6941-MS (September 1977)
The code runs on Cray YMP, SUN Sparc Station IPX, IBM RS/6000 Model 590, Hewlett Packard 9000 Model 735, and Silicon Graphics-cpu IP22-mips.
|Package ID||Computer language|
DANTSYS requires a Fortran 77 compiler; a C-language preprocessor (cpp); a C-compiler (cc); and GMAKE (GnuMake from Free Software Foundation). Some compiler versions on the various platforms are deficient in the sense that either the code will not compile or else bad assembly code is generated. We list the operating systems and Fortran compilers under which the code met RSICC’s QA requirements.
CRAY-(UNICOS 18.104.22.168/CF77-RELEASE 22.214.171.124)
SUN-(SUNOS 4.1.2/F77 Version 2.0.1)
IBM RS/6000-(AIX 2.3/XLF RELEASE 03.02.0002.0001)
Hewlett Packard 9000-(HP-UX A.09.05/F77-HP UX10.0)
Silicon Graphics-(IRIX 5.2/F77 RELEASE 5.2).
Contributed by: Radiation Safety Information Computational Center
Oak Ridge National Laboratory
Oak Ridge, TN, USA
Developed by: Los Alamos National Laboratory
Los Alamos, NM, USA
version CCC-0547/08 contributed by:
Mr. Cornelius H. M. BROEDERS
Karlsruhe Institut Für Technologie - Institute for Reactor Safety
P.O. Box 3640
76021 Karlsruhe, Germany
Keywords: discrete ordinate method, multigroup, one-dimensional, shielding, transport theory, two-dimensional.