d82cc36c5a
OpenFOAM can now be compiled with single, double or long double scalars by setting the WM_PRECISION_OPTION environment variable to either SP, DP or LP respectively. On most 64bit systems long double is stored as 128bit but computed in the floating point hardware to 80bit. Due to the increased storage compared to double precision cache and memory access is significantly more time consuming causing a slow-down of floating point intensive operations by a factor of 2 to 3.
README for OpenFOAM-dev
- About OpenFOAM
- Copyright
- Download and installation instructions
- Documentation
- Source code documentation
- OpenFOAM C++ Style Guide
- Reporting bugs in OpenFOAM
- Contacting the OpenFOAM Foundation
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About OpenFOAM
OpenFOAM is a free, open source computational fluid dynamics (CFD) software package released by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.
Copyright
OpenFOAM is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version. See the file COPYING in this directory or
http://www.gnu.org/licenses/, for a description of the GNU General Public
License terms under which you can copy the files.