Reply To: Multi GPUs Calculation
How do you know that it is not actually using the MPI library in /home/ubuntu2204/opt/openmpi/lib? The core library compilation was successful as per the log. Did you already try recompiling one of the examples to confirm whether it still doesn’t work?
To make sure you can also try to put the CUDA-aware MPI paths first in:
export PATH=$PATH:$MPI_HOME/bin
export CPATH=$CPATH:$MPI_HOME/include
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$MPI_HOME/lib