Hello all,

I have seen errors like this when Cactus had to self-compile MPI.

The script arrangements/ExternalLibraries/MPI/src/detect.pl hard-codes the MPI libraries to be "mpi_usempif08 mpi_usempi_ignore_tkr mpi_mpifh" which are correct for a compiler that supports fortran 2008 (basically all I know of) but if one encountered one that (eg due to compiler options used) only supported fortran 90 then the linker libraries will change names.

I would suggest looking into

configs/sim/scratch/external/MPI/libs/

and then modify the script arrangements/ExternalLibraries/MPI/src/detect.pl to use those libraries (it is not enough to set MPI_LIBS in your optionlist is not enough since the script ignores it).

Though the best solution is probably to install an MPI stack eg libopenmpi-dev on Ubuntu / Debian (and possibly Fedora) based machines.

Yours, Roland

Can you tell us (1) the name of the machine you're on? (2) what your build command looked like?

--Steve

On 12/7/18 3:59 AM, Silvia Traversi wrote:

...

Hello,

I'm trying to install and configure the EinsteinToolkit on my computer > (I'm working on Centos). I'm following the tutorial at > https://nbviewer.jupyter.org/github/nds-org/jupyter-et/blob/master/CactusTut....

I got the following error during the "Building" phase:

/usr/bin/ld: cannot find -lmpi_usempif08 /usr/bin/ld: cannot find -lmpi_usempi_ignore_tkr collect2: error: ld returned 1 exit status make[1]: *** [/home/traversi/Cactus/exe/cactus_sim] Error 1 make: *** [sim] Error 2

Could you help me to fix the problem, please?

Thank you very much,

Silvia

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