Installation/compilation problem using MPI

Hi dventuri,

it is on our issue list. Hopefully, we can fix this with the next release.

Best wishes
Andreas

Hi Andreas,

I just wanted to try compiling cfdem with intelmpi on our cluster. Could you please tell me if the bug has been resolved or not? Because I still encounter compilation problems and get the following error

Creating list of contact models completed.
make[1]: Entering directory `/.../LIGGGHTS/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile:499: *** 'Could not compile and link a simple MPI example. Test was done with MPI_LIB=/opt/intel/compilers_and_libraries_2017/linux/mpi/lib64'. Stop.
make[1]: Leaving directory `/.../LIGGGHTS/LIGGGHTS-PUBLIC/src/Obj_auto'
make: *** [auto] Error 2

Thank you and Regards,
Arnav

hello,
Can you help me please:

make[1]: Entering directory '/home/mirand/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile:425: *** 'Could not find a suitable mpi compiler (mpicxx or mpic++). Please specify one in the MAKE/Makefile.user using the MPICXX_USR variable or set USE_MPI to "OFF"'. Stop.
make[1]: Leaving directory '/home/mirand/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile.shlib:62: recipe for target 'auto' failed
make: *** [auto] Error 2

Hello,
Have you followed the steps found in the installation section? (https://www.cfdem.com/media/DEM/docu/Section_start.html#making-liggghts-...)
What output do you get if you run the following commands?
which mpirun
which mpicxx

Hello

I have just updated to Ubuntu 20.04 and I just downloaded the latest version of LIGGGHTS, but when I compile ```make auto``` I get:

Creating list of contact models completed.
make[1]: Entering directory '/mnt/d/Linux/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile:456: *** 'Could not compile a simple MPI example. Test was done with MPI_INC="" and MPICXX="mpicxx"'. Stop.
make[1]: Leaving directory '/mnt/d/Linux/LIGGGHTS-PUBLIC/src/Obj_auto'
make: *** [Makefile:114: auto] Error 2

when I change the path for mpicxx in the Makefile.user I get this:

Creating list of contact models completed.
make[1]: Entering directory '/mnt/d/Linux/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile:456: *** 'Could not compile a simple MPI example. Test was done with MPI_INC="" and MPICXX="/usr/bin/mpicxx"'. Stop.
make[1]: Leaving directory '/mnt/d/Linux/LIGGGHTS-PUBLIC/src/Obj_auto'
make: *** [Makefile:114: auto] Error 2

Could you please help me.

Thanks

You need to update your path variable I think. Try:

PATH=$PATH:/usr/bin

Then run the commands mschramm suggested and see if you get a better result.

Hi,

I'm trying to install liggghts, and I get the following error when I run "make auto":

Creating list of contact models completed.
make[1]: Entering directory '/home/htmt/Documents/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile:461: *** 'Could not compile a simple MPI example. Test was done with MPI_INC="" and MPICXX="mpicxx"'. Stop.
make[1]: Leaving directory '/home/htmt/Documents/LIGGGHTS-PUBLIC/src/Obj_auto'
make: *** [Makefile:114: auto] Error 2

Could you please help me.
Thanks

Hello,

When I am trying to install LIGGGHTS using make auto, I am getting the following error. May I please know how to solve this problem?

reating list of contact models completed.
make[1]: Entering directory '/home/slm_lab/LIGGGHTS-PUBLIC/src/Obj_auto'
mpicxx -funroll-loops -fstrict-aliasing -Wall -Wno-unused-result -O2 -std=c++17 -fPIC -I/usr/include/vtk-7.1 -DLAMMPS_VTK -DSUPERQUADRIC_ACTIVE_FLAG -DNONSPHERICAL_ACTIVE_FLAG -c ../compute_pair_gran_local.cpp
In file included from ../granular_pair_style.h:47,
from ../pair_gran_proxy.h:58,
from ../compute_pair_gran_local.cpp:50:
../utils.h: In function ‘std::string LIGGGHTS::Utils::int_to_string(int)’:
../utils.h:70:12: error: invalid ‘static_cast’ from type ‘std::__cxx11::basic_ostringstream’ to type ‘std::ostringstream&’ {aka ‘std::__cxx11::basic_ostringstream&’}
70 | return static_cast< std::ostringstream & >(( std::ostringstream() << std::dec << a ) ).str();
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[1]: *** [Makefile:1399: compute_pair_gran_local.o] Error 1
make[1]: Leaving directory '/home/slm_lab/LIGGGHTS-PUBLIC/src/Obj_auto'
make: *** [Makefile:114: auto] Error 2

I have done everything right following the steps yet getting following error
Creating list of contact models completed.
make[1]: Entering directory '/home/anand/LIGGGHTS-PUBLIC/src/Obj_auto'
Makefile:461: *** 'Could not compile a simple MPI example. Test was done with MPI_INC="" and MPICXX="mpicxx"'. Stop.
make[1]: Leaving directory '/home/anand/LIGGGHTS-PUBLIC/src/Obj_auto'
make: *** [Makefile:114: auto] Error 2

I think I found the solution. This error occurs if "mpi.h" file is missing.

I ran a sample code :

#include <mpi.h>
#include <iostream>

int main(int argc, char** argv) {
MPI_Init(&argc, &argv);
std::cout << "MPI initialized successfully." << std::endl;
MPI_Finalize();
return 0;
}

and saved it as "mpi_test.cpp"

then After creating the mpi_test.cpp file, compile it with:

mpicxx mpi_test.cpp -o mpi_test

Run the compiled program to ensure MPI is working:

mpirun -np 1 ./mpi_test

You should see the output: MPI initialized successfully.

After running this , I found the error :

kanak@kanak-HP-ProBook-440-G6:~/Documents$ mpicxx mpi_test.cpp -o mpi_test
mpi_test.cpp:1:10: fatal error: mpi.h: No such file or directory
1 | #include <mpi.h>
| ^~~~~~~
compilation terminated.
kanak@kanak-HP-ProBook-440-G6:~/Docu

so I installed this :

sudo apt update
sudo apt install openmpi-bin libopenmpi-dev

which eventually solved the problem.