N-Body Simulation
Sverre Aarseth's research into numerical simulations of many-body (N-body) gravitational interactions spans over 40 years and is reported in several publications and his book. Sverre has developed a set of FORTRAN codes which describe the dynamics very closely, and these are regarded by many as the de facto standard.
Downloads
Sverre Aarseth's codes are available freely for download from the N-Body directory at ftp://ftp.ast.cam.ac.uk/pub/sverre/. Your browser should present you with an FTP viewer window when you click on this link and you should be able to copy whole code group directories at a time.
Use the links below to identify and download the specific files that you need.
At any time if you wouldd like further information, please contact Sverre Aarseth.
| Code Group | Filename | Filesize (Kb) | Notes |
|---|---|---|---|
| CODES | 2 | General textual description of the codes. | |
| nbody1 | README | 1 | The version nbody1.tar.Z is in full REAL*8. The file nbody1_real4.tar.Z is the old version with mixed REAL*4/*8 precision which is kept for historical reasons. The recent file nbody1h.tar.gz is the Hermite block-step formulation for workstations and (micro-)GRAPE, developed with Jun Makino in 1991. |
| nbody1.tar.Z | 26 | ||
| nbody1_real4.tar.Z | 26 | ||
| nbody1h.tar.gz | 140 | ||
| nbody2 | nbody2.tar.Z | 213 | Directory nbody2 contains the code NBODY2 and an article describing it. The whole file is called nbody2.tar.Z. Inside is the code, the article chap9.tex and also chap9.ps. The article may be produced in TeX using the enclosed macro svnyp.sty (or see New Ast. 6, 277). The code NBODY2H is the Hermite block-step version of NBODY2. |
| nbody2h.tar.Z | 185 | ||
| nbody3 | nbody3.tar.Z | 204 | One force polynomial with full regularization. |
| nbody4 | README | 1 | The public GRAPE-6 or micro-Grape code NBODY4 and the equivalent brute force code for workstations or laptops called BRUT4. The current versions were updated 12 March 2006. Introduction to running simulations. |
| nbody4.tar.gz | 360 | ||
| brut4.tar.gz | 340 | ||
| intro_nbody4.pdf | 1 | ||
| nbody5 | README | 1 | The code NBODY5 has been heavily used but is no longer updated. NBODY6 is recommended instead. |
| nbody5.tar.Z | 289 | ||
| nbody6 | README | 1 | README contains some past history of NBODY6. Further practical info can be found in directory Docs. nbody6.tar.gz holds the new standard code NBODY6. The previous 2006 version has been renamed as old6.tar.gz. The postscript file man6.pdf is the new manual. The 2006 manual has been renamed as ps file old6.ps. Rainer Spurzem's corresponding parallel code, nbody6++, can be obtained here. Introduction to running simulations. README2 contains input file for using GPU with nbody6. guide.pdf is guide for SSE and GPU with nbody6. Tar file for the GPU directory and library. |
| nbody6.tar.gz | 980 | ||
| old6.tar.gz | 640 | ||
| man6.pdf | 200 | ||
| old6.ps | 306 | ||
| intro_nbody6.pdf | 1 | ||
| README2 | 1 | ||
| guide.pdf | 30 | ||
| gpu.tar.gz | 65 | ||
| gpu2.tar.gz | 95 | ||
| planet | planet.tar.Z | 16 | PLANET is a Hermite code for planetesimals. PLANET3 is a planetary code with fragmentation. |
| planet3.tar.Z | 30 | ||
| triple | triple.tar.Z | 13 | Basic version of three-body regularization. TRIPLE movie code with X11 graphics. |
| movie3.tar.Z | 26 | ||
| chain | chain.tar.Z | 20 | Basic chain version. CHAIN2 includes the slow-down procedure (Cel. Mech. 64, 197). Other versions are available upon request. movie.tar.Z holds X11 movie version of CHAIN. |
| chain2.tar.Z | 26 | ||
| movie.tar.Z | 48 | ||
| comove | comove.tar.Z | 28 | Cosmological N-body code in comoving coordinates. |
| errata | README | 1 | The file "errata" is a text file for book errata of 3/10/03 and "errata.ps" is the corresponding postscript file. The text file "errata2" contains subsequent mistakes. |
| errata | 2 | ||
| errata.ps | 54 | ||
| errata2 | 1 | ||
| hermit | hermit.tar.Z | 16 | HERMIT is a basic Hermite N-body code. HERMIT2 uses time-symmetric Hermite method of Kokubo et al. HERMIT4 is time-symmetric Hermite with Burdet-Heggie regularization. The manual is described in the postscript file hermit4.ps. |
| hermit2.tar.Z | 16 | ||
| hermit4.tar.Z | 43 | ||
| hermit4.ps | 133 | ||
| toy | README | 15 | Toy codes for unperturbed two-body motion. Five different regularization methods are implemented. A new version called hermit.tar.Z includes Post-Newtonian perturbations derived from the 2005 paper of Mora and Will. |
| toy.tar.Z | 65 | ||
| hermit.tar.Z | 22 | ||
| multireg | README | 1 | |
| triple.tar.Z | 22 | triple.tar.Z holds the three-body regularization code described in the manual. chain0.tar.Z contains the basic chain regularization code as described in the manual manreg.ps. chain.tar.Z gives the full version with many optional features and is described in the manual. The postscript file manreg.ps is the manual for the three-body and chain codes. triple2.tar.Z contains the standard AZ method with an external potential as well as optional movie facilities for PGPLOT and X11. The code triple3.tar.Z contains GR example discussed in 2007 paper. |
|
| chain0.tar.Z | 14 | ||
| chain.tar.Z | 45 | ||
| manreg.ps | 220 | ||
| triple2.tar.Z | 32 | ||
| triple3.tar.Z | 50 | ||
| talks | talks.tar.gz | 600 | N-body talks Nov 2006. |
| nbody0 | nbody0.f | 1 | Compact fourth-order Hermite block-step code. |
Page last updated: 28 February 2011 at 17:22
© 2009 - 2012 Institute of Astronomy, University of Cambridge
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA • Tel:+44 (0)1223 337548 • Fax:+44 (0)1223 337523
Information provided by webmaster@ast.cam.ac.uk • Privacy • Accessibility • Press • Site Map • IoA User Login