请问怎么修改只读文件etc/controlDict里的参数?

hotairballon1997

如题，因为我现在用的openfoam是在超算中心里的模块，参数文件都是只读的。但是我想修改etc/controlDict里面的mpiBufferSize这一项，不知道该怎么实现？

以前在1712（或者一些其他的版本）中是可以通过，复制一个用户自定义的controlDict文件在目录$HOME/.OpenFOAM/v1712/controlDict中，从而编辑这个文件就可以实现修改。但是在之后的1912（我现在用的版本）中这一功能好像没有了，不起作用。不知道有没有别的途径可以修改mpiBufferSize这一参数？

bestucan

https://www.openfoam.com/releases/openfoam-v1712/parallel.php
这里的一句：

as a setting in the OptimisationSwitches dictionary located in the \$WM_PROJECT_DIR/etc/controlDict file, or the per-user override in the /.OpenFOAM/v1712/controlDict file or per-case override in the $FOAM_CASE/system/controlDict file

试试这个 or per-case 的方法

hotairballon1997

谢谢回复，这个就是我之前提到的放在$HOME/.OpenFOAM/v1712/controlDict中可以覆盖etc/controlDict中的参数。但是这个功能好像只在1712，1812中有效，但是在1912版本中就不行了

李东岳

1712

Note
#     Many environment variables can be overridden using a <prefs.sh> file
#     from one of these locations:
#     * user-specific:
#         * ~/.OpenFOAM/$WM_PROJECT_VERSION
#         * ~/.OpenFOAM
#     * group-specific:
#         * $WM_PROJECT_SITE/site/$WM_PROJECT_VERSION
#         * $WM_PROJECT_SITE/site
#     * general:
#         * $WM_PROJECT_DIR/etc
#
#     Any changes made to this bashrc file may be lost with the next upgrade.

2006

Description
#     The OpenFOAM environment for POSIX shell (eg, bash,dash,zsh,...).
#     Source manually or from the ~/.bashrc or ~/.profile files.
#
#     Most settings can be overridden with a <prefs.sh> file:
#
#       - Base values (eg, from system admin):
#         -  $WM_PROJECT_DIR/etc/prefs.sh
#
#       - User or group values (first file found):
#         -  ~/.OpenFOAM/$FOAM_API/prefs.sh
#         -  ~/.OpenFOAM/prefs.sh
#         -  $WM_PROJECT_SITE/$FOAM_API/etc/prefs.sh
#         -  $WM_PROJECT_SITE/etc/prefs.sh
#
#     Some settings can also be overridden on the command-line when
#     sourcing this file. For example,
#
#       . /path/etc/bashrc WM_COMPILER=Clang WM_LABEL_SIZE=64

有些变化，你试试？

bestucan

@hotairballon1997 看着我真诚的眼神，告诉我，你看了我的帖子

or per-case override in the $FOAM_CASE/system/controlDict file

你懂我的意思吧.jpg