[DaniEng]

Hi,

I'm interested in working with time-varying boundary conditions and have OpenFOAM 8 installed. I wish to install swak4FOAM to use their groovybc function.

Is OpenFOAM 8 compatible with swak4FOAM? The documentation of swak4FOAM only mentions up to openFOAM 3.0 but since it seems like with such a handy set of libraries, there should be one compatible with the later versions of OpenFOAM.

thanks!

[olesen]

Originally Posted by DaniEng

Hi,

I'm interested in working with time-varying boundary conditions and have OpenFOAM 8 installed. I wish to install swak4FOAM to use their groovybc function.

Is OpenFOAM 8 compatible with swak4FOAM? The documentation of swak4FOAM only mentions up to openFOAM 3.0 but since it seems like with such a handy set of libraries, there should be one compatible with the later versions of OpenFOAM.

I haven't tried that particular combination, but Bernhard puts an enormous effort into maintaining compatibility with many different versions and flavours of OpenFOAM. He once quipped that he probably has more macros and ifdefs in swak4foam than actually code.
Having said that, you might also find that in the meantime you can solve your problem without swak4foam. If you only need a time-varying value boundary condition, you can define that as a uniformFixedValue (a bit of a misnomer in the meantime) with the value defined as a Function1 or PatchFunction1. This supports various types of input such as tables, common functions, coded functions.


Note that the swak4foam expressions were reimplemented in OpenFOAM-v1912, and lightly extended in OpenFOAM-v2012. So now you also have the option of using a swak-like expression for spatial-temporal conditions (eg, unformFixedValue) as well as for defining an exprMixed boundary condition.

The expressions also happen to be what powers the #eval dictionary directive.
Some docs:

• https://www.openfoam.com/documentati...on-syntax.html
• https://www.openfoam.com/documentati...n.html#details
• https://www.openfoam.com/documentati...d.html#details

[zhaohb11_cfd]

Hi, DaniEng, do you install swak4foam in OF8 sucessfully?

[gschaider]

Originally Posted by zhaohb11_cfd

Hi, DaniEng, do you install swak4foam in OF8 sucessfully?

Just came aware of this thread. swak4Foam compiles with OF8. Just not the released branch but the develop (which currently is stable. I just don't have the time to make the tests to call it a release). Just follow the instructions at the top of https://openfoamwiki.net/index.php/Contrib/swak4Foam just do the "hg update develop" before the Allwmake

[zhaohb11_cfd]

Originally Posted by gschaider

Just came aware of this thread. swak4Foam compiles with OF8. Just not the released branch but the develop (which currently is stable. I just don't have the time to make the tests to call it a release). Just follow the instructions at the top of https://openfoamwiki.net/index.php/Contrib/swak4Foam just do the "hg update develop" before the Allwmake

thanks, gschaider. I will give it a try.

[ht2017]

Originally Posted by zhaohb11_cfd

thanks, gschaider. I will give it a try.

do you have success to install swak4foam on OF8? please teach me how to do it.

[zhaohb11_cfd]

Originally Posted by ht2017

do you have success to install swak4foam on OF8? please teach me how to do it.

I have not installed swak4foam on OF8. I will try it recently. If sucessful, I will let you know.

[F42]

Hello,

I tried to install swak4foam on OF8 with the commands suggested by B. Gschaider:

hg clone http://hg.code.sf.net/p/openfoam-extend/swak4Foam swak4Foam cd swak4Foam
hg update develop
./AllwmakeAll

However, I get the following error message:

/usr/bin/env: ‘python’: No such file or directory
/usr/bin/env: ‘python’: No such file or directory
In file included from ../filesThatAreOnlyInSomeDistributions/OutputFilerDropin/outputFilterOutputControl.C:26:
lnInclude/swak.H:48:2: error: #error "This swak4Foam-version is only used for the 2.x-versions of OpenFOAM. For lower versions there is a special branch"
   48 | #error "This swak4Foam-version is only used for the 2.x-versions of OpenFOAM. For lower versions there is a special branch"
      |  ^~~~~
make: *** [/home/user1/OpenFOAM/OpenFOAM-8/wmake/rules/General/transform:26: Make/linux64GccDPInt32Opt/../filesThatAreOnlyInSomeDistributions/OutputFilerDropin/outputFilterOutputControl.o] Error 1

output above when building:

Reading variables from 'swakConfiguration'
Looking for Python 2
Looking for Python 3
Using our own Lua at /home/user1/OpenFOAM/swak4Foam/privateRequirements
Checking swak4Foam-version and generating file
hg info: 0dd63e72a56f (develop) tip
No 'bear' installed
Bison: /home/user1/OpenFOAM/swak4Foam/privateRequirements/bin/bison
Flex: /usr/bin/flex
Bison at /home/user1/OpenFOAM/swak4Foam/privateRequirements/bin/bison is version 3.4 (Major 3 Minor 4)
Flex is version 2.6.4 (Minor version: 4)
No swak4FoamParsers/foamVersion4swak.H. Generated

As far as I understand python is not necessary for building. Does anybody know what the problem is? I also tried it with v2006 with the same result.


Thanks in advance.

[gschaider]

Originally Posted by F42

Hello,

I tried to install swak4foam on OF8 with the commands suggested by B. Gschaider:

hg clone http://hg.code.sf.net/p/openfoam-extend/swak4Foam swak4Foam cd swak4Foam
hg update develop
./AllwmakeAll

However, I get the following error message:

/usr/bin/env: ‘python’: No such file or directory
/usr/bin/env: ‘python’: No such file or directory
In file included from ../filesThatAreOnlyInSomeDistributions/OutputFilerDropin/outputFilterOutputControl.C:26:
lnInclude/swak.H:48:2: error: #error "This swak4Foam-version is only used for the 2.x-versions of OpenFOAM. For lower versions there is a special branch"
   48 | #error "This swak4Foam-version is only used for the 2.x-versions of OpenFOAM. For lower versions there is a special branch"
      |  ^~~~~
make: *** [/home/user1/OpenFOAM/OpenFOAM-8/wmake/rules/General/transform:26: Make/linux64GccDPInt32Opt/../filesThatAreOnlyInSomeDistributions/OutputFilerDropin/outputFilterOutputControl.o] Error 1

output above when building:

Reading variables from 'swakConfiguration'
Looking for Python 2
Looking for Python 3
Using our own Lua at /home/user1/OpenFOAM/swak4Foam/privateRequirements
Checking swak4Foam-version and generating file
hg info: 0dd63e72a56f (develop) tip
No 'bear' installed
Bison: /home/user1/OpenFOAM/swak4Foam/privateRequirements/bin/bison
Flex: /usr/bin/flex
Bison at /home/user1/OpenFOAM/swak4Foam/privateRequirements/bin/bison is version 3.4 (Major 3 Minor 4)
Flex is version 2.6.4 (Minor version: 4)
No swak4FoamParsers/foamVersion4swak.H. Generated

As far as I understand python is not necessary for building. Does anybody know what the problem is? I also tried it with v2006 with the same result.


Thanks in advance.

I'm afraid Python is necessary because it is used to generates some headers files automagically. It was never mentioned in the requirements as I hardly ever seen a Linux system without it (mostly because a lot of distros rely on it for their packaging system and other system tools). But the scripts in question don't mind if it Python 2 or 3


PS: which distro do you use that manages to live without Python? Just curious

[F42]

Originally Posted by gschaider

I'm afraid Python is necessary because it is used to generates some headers files automagically. It was never mentioned in the requirements as I hardly ever seen a Linux system without it (mostly because a lot of distros rely on it for their packaging system and other system tools). But the scripts in question don't mind if it Python 2 or 3


PS: which distro do you use that manages to live without Python? Just curious

Thanks for your response,


I am using Ubuntu 20.04.1 with python 3.8.5 installed. When swak is ok with python3 then this shouldn´t be the problem, should it?

[gschaider]

Originally Posted by F42

Thanks for your response,


I am using Ubuntu 20.04.1 with python 3.8.5 installed. When swak is ok with python3 then this shouldn´t be the problem, should it?

It is. If the python3 is also found as "python". Seems that this is not the case in the new Ubuntus. But there seems to be a package for that https://askubuntu.com/questions/1224...-20-04#1224710

[F42]

Originally Posted by gschaider

It is. If the python3 is also found as "python". Seems that this is not the case in the new Ubuntus. But there seems to be a package for that https://askubuntu.com/questions/1224...-20-04#1224710

you are right. Thanks! Ubuntu 20.04 is not shipped with python2 anymore.

sudo apt-get install python-is-python3

This package points to python3 when an application calls python. It seems to have solved the issue. At least the installation was succesful now.
It might be beneficial to add this information to the wiki as others will face the same error when trying to build on the newest Ubuntu.

[nipinl]

I have installed swak4Foam in v2012 after installing

python-is-python3

in the following way,

hg clone http://hg.code.sf.net/p/openfoam-extend/swak4Foam swak4Foam cd swak4Foam
hg update develop
./AllwmakeAll


During installation it complained for missing pythonInterpreterWrapper.H which then I copied from /opt/swak4Foam/Libraries/languageIntegration/swakPythonIntegration

Second time it complained missing Python.h file during the compiling process of funkyPythonPostproc.

Adding the path /usr/include/python3.8 to Make/option of funkyPythonPostproc gave another error as not recognizing "PyIntAsLong"

Finally, replacing the path by adding -I/usr/include/python2.7/ in the option file solved the issue.

[ecbmxer]

Hi, I am also trying to get swak compiled for OF8.

I thought I got it compiled successfully (no actual errors), but I ended up with some strange errors when running a decomposed case w/ groovyBC and a timelines entry.

This same case ran fine 1) using OF6 + swak and 2) using OF8 + swak, in serial mode (no decomposition).

Upon inspection, I noticed the decomposed BC in the processor0/0 folder was incomplete - specifically the 'name' entry in timelines did not carry over to the decomposed folders.

I also noted that I got an error saying OF8 could not load libsimpleSwakFunctionObjects.so. But most all of the other library files could be found in the $FOAM_USER_LIBBIN.

Any thoughts?

Thanks!

-Clint

[ecbmxer]

Just to update this thread - I got swak to compile fine.

I did (3) things different and don't know which made it work. (I suspect #2)
1. I did NOT do hg update develop
2. I completely removed the swak4Foam directory and re-downloaded it (instead of just cleaning and remaking)
3. I did not change the name of the swak4Foam directory -I had previously been calling it swak4Foam_OF8, as I had a separate swak installation for OF6. I did not think this would matter, as it seems to detect the directory you are in. It also seemed OK when I recompiled swak for OF6 within swak4Foam_OF6.

BUT, none of this fixed the original issue I had.

My decomposed timelines entry (under groovyBC, OF8) looks like:

        timelines       (
{
        file            "$FOAM_CASE/H2frac.txt";
        format          foam;
}

But in OF6 it looks like:

        timelines       (
{
        name            XH2;
        file            "$FOAM_CASE/H2frac.txt";
        outOfBounds     clamp;
}

Which is exactly as I specified in my 0 directory. And so it errors out, complaining about not defining 'name'.

[dlvld]

I'm also facing problems installing Sweak4Foam with openFOAM 8.

I'm getting the following error.

Current OpenFOAM version is 8.
Previously compiled for OpenFOAM (8)

/home/agt/OpenFOAM/OpenFOAM-8/applications/swak4Foam/privateRequirements/bin existing. Prepending to PATH-variable (private version of Bison)

Reading variables from 'swakConfiguration'
Looking for Python 2
Looking for Python 3
Using our own Lua at /home/agt/OpenFOAM/OpenFOAM-8/applications/swak4Foam/privateRequirements
Checking swak4Foam-version and generating file
Swak version is 202x.yy.0
hg info: 481d96f16780 (develop) tip
Using /usr/bin/bear to build compilation database
Bison: /home/agt/OpenFOAM/OpenFOAM-8/applications/swak4Foam/privateRequirements/bin/bison
Flex: /usr/bin/flex
Bison at /home/agt/OpenFOAM/OpenFOAM-8/applications/swak4Foam/privateRequirements/bin/bison is version 3.4 (Major 3 Minor 4)
Flex is version 2.6.4 (Minor version: 4)
OpenFOAM-version: Major 8 Minor 0 Patch -1 (-1 == x / 98) Fork: org
No change to swak4FoamParsers/foamVersion4swak.H

Please include the output above when reporting a problem in the compilation. It helps diagnosing the problem


Unrecognized parameter: "--cdb=/home/agt/OpenFOAM/OpenFOAM-8/applications/swak4Foam/compile_commands.json"
Usage: bear [--output <arg>] [--verbose] -- ...
Parser library did not compile OK. No sense continuing as everything else depends on it

Could anyone help me? I didn't find the solution for this case.