CFD Online Discussion Forums - OpenFOAM 1.7.1. using openmpi on Ubuntu 12.04

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OpenFOAM 1.7.1. using openmpi on Ubuntu 12.04

Hi there.

We're trying to get OF running using on a Ubuntu 12.04 (x86) system.
Following the installation instructions from openfoamwiki gave us a running installation of OF, but it gives errors, when we try to run it in parallel operation:

Code:

Sorry!  You were supposed to get help about:

    find-available:not-valid

But I couldn't open the help file:

    /home/*****/OpenFOAM/ThirdParty-1.7.1/openmpi-1.4.1/share/openmpi/help-mca-base.txt: No such file or directory.  Sorry!

--------------------------------------------------------------------------

[eurex1:23625] *** Process received signal ***

[eurex1:23625] Signal: Segmentation fault (11)

[eurex1:23625] Signal code: Address not mapped (1)

[eurex1:23625] Failing at address: 0x28

[eurex1:23625] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0) [0x7f3dbe327cb0]

[eurex1:23625] [ 1] /usr/lib/libopen-pal.so.0(mca_base_select+0x108) [0x7f3dbe557518]

[eurex1:23625] [ 2] /usr/lib/libopen-pal.so.0(opal_crs_base_select+0x7e) [0x7f3dbe56990e]

[eurex1:23625] [ 3] /usr/lib/libopen-pal.so.0(opal_cr_init+0x31e) [0x7f3dbe5480ee]

[eurex1:23625] [ 4] /usr/lib/libopen-pal.so.0(opal_init+0x159) [0x7f3dbe547a59]

[eurex1:23625] [ 5] /usr/lib/libopen-rte.so.0(orte_init+0x4d) [0x7f3dbe799a0d]

[eurex1:23625] [ 6] mpirun() [0x402fe5]

[eurex1:23625] [ 7] mpirun() [0x402b34]

[eurex1:23625] [ 8] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f3dbdf7a76d]

[eurex1:23625] [ 9] mpirun() [0x402a59]

[eurex1:23625] *** End of error message ***

The path mentioned in the error message (/home/*****/OpenFOAM/ThirdParty-1.7.1/openmpi-1.4.1/share/openmpi/help-mca-base.txt ) doesn't exist.

(I also noticed the compiler complaining about missing mpi.h in Allwmake of OF 1.7.1, which is somewhat weird, as we'd manage to get a recent OF 2.1.1 running parallel without any problems.)

Can anyone help ?

[Isn't there a recent howto out there, describing how to build OF 1.7.1 with mpi support ? Most of the docs I read were unfortunately severely out of date :( ]

Greetings dasMopo and welcome to the forum!

I believe you are talking about this page: http://openfoamwiki.net/index.php/In...M-1.7.1/Ubuntu

Since you have more than one OpenFOAM installed, how are you keeping the two installations separated, shell-wise?
If you don't know what I mean, see: http://www.cfd-online.com/Forums/blo...vironment.html

Also, try running Allwmake in OpenFOAM-1.7.1 once again, and check what errors is gives you.

Best regards,
Bruno

Wyldckat, thanks for your reply.

Actually - after some additional tries and a fresh install - I managed to get it to work. The problem was that in the howto there was the include of systemopenmpi, which wouldn't work.

Code:

source $HOME/OpenFOAM/OpenFOAM-1.7.1/etc/bashrc WM_NCOMPPROCS=4 WM_MPLIB=SYSTEMOPENMPI

Changing this to openmpi [which is supplied in the ThirdParty package, as far as i understood] solved the problem - parallel processing is now available and running flawlessly.

Code:

source $HOME/OpenFOAM/OpenFOAM-1.7.1/etc/bashrc WM_NCOMPPROCS=4 WM_MPLIB=OPENMPI

Regarding your question - we managed to run different versions of OF by individually sourcing the environments using a script instead of placing the source command in the user's home .bashrc

This works quite well.

Hi dasMopo,

Many thanks for the feedback! I'll update the wiki page accordingly and give this page as a reference for future support!

I've been writing on these wiki pages to use the Ubuntu's version of Open-MPI, because (at least in theory) it should be the most stable and tested version... but then again, I didn't fully test the resulting build. So feedback is always welcome!

Best regards,
Bruno

Well, you're very welcome. :)

Another issue I encountered in using the 1.7.1 Ubuntu installation guide: the getQt script (in section 6 - building paraView) still points to the Trolltech servers, which are no longer available.

Correct link should point to the project's new home at http://releases.qt-project.org/qt4/source/ (Nokia).

Hi dasMopo,

Once again, many thanks for the feedback! I've implemented the changes you suggested.

Best regards,
Bruno