[quarkz]

Hi,

I know it's possible to install OF 2006, 2112 on the same system.

However, is it possible to install different copies of the same OF on the same system? So I would like to have:

1. OF 2206 using system C + MPI compiler

2. OF 2206 using self installed newer version of C + MPI compiler

I tried once a while ago by using a different install dir but I can't remember the exact details. I think part of my earlier installation got overwrite.

If anyone has experience, pls let me know if it's possible.

Thanks.

[quarkz]

Hi,

I have personally tested it and what I do is:

1. instead of /home/user/OpenFOAM/OpenFOAM-v2112, use

/home/user/OpenFOAM_new/OpenFOAM-v2112

2. If you are compiling codes, it is better to edit the etc/bashrc:

export WM_COMPILER=Gcc

to

export WM_COMPILER=Gcc_new

This is because your new lib will then be in different dir:

/home/user/OpenFOAM/tsltaywb-v2112/platforms/linux64GccDPInt32Opt/lib/

to

/home/user/OpenFOAM/tsltaywb-v2112/platforms/linux64Gcc_newDPInt32Opt/lib/

So the libraries will not overwrite the different versions.

Hope this helps.

[olesen]

Originally Posted by quarkz

Hi,

I know it's possible to install OF 2006, 2112 on the same system.

However, is it possible to install different copies of the same OF on the same system? So I would like to have:

1. OF 2206 using system C + MPI compiler

2. OF 2206 using self installed newer version of C + MPI compiler

I tried once a while ago by using a different install dir but I can't remember the exact details. I think part of my earlier installation got overwrite.

If anyone has experience, pls let me know if it's possible.

Thanks.

We do this all of the time. It is no problem, but you will want to adjust the compilation names to avoid overwriting the same locations. Here is my default setup (saved as etc/prefs.sh)

# -*- sh -*- 
# Preferences for system clang-xxx, label-size=32 
export WM_COMPILER_TYPE=system 

export WM_COMPILER=Clang140 
export WM_COMPILE_CONTROL="version=14.0 +lld" 

export WM_LABEL_SIZE=32 

## Use system openmpi
export WM_MPLIB=SYSTEMOPENMPI

## Use system openmpi4 
# export WM_MPLIB=SYSTEMOPENMPI4

For comparison, I also have a gcc-system file of preferences

# -*- sh -*- 
# Preferences for system gcc, label-size=32 
export WM_COMPILER_TYPE=system 
export WM_COMPILER=Gcc 
unset  WM_COMPILE_CONTROL

export WM_LABEL_SIZE=32

as well as a for a third-party compilation of gcc-4.8.5 (the most ancient compiler currently still usable):

# -*- sh -*- 
# Preferences for third-party Gcc48, label-size=32 
export WM_COMPILER_TYPE=ThirdParty 

# export WM_CONFIG=gcc48 
export WM_COMPILER=Gcc48 
export WM_LABEL_SIZE=32 

unset WM_COMPILE_CONTROL

To use one instead of the other. Either swap out with the prefs.sh file, or source on the command line. For example,

source etc/bashrc  gcc-system


source etc/bashrc gcc48

I usually dump the extra config files under my ~/.OpenFOAM directory, where they can be found for different versions.


In the regular prefs example, you will see there is a version number in the WM_COMPILE_CONTROL. This means it will compile with clang++-14.0