It seems that mpirun adds /usr/lib64 at the beginning of the LD_LIBRARY_PATH environment variable (/usr/lib64 usually corresponds to /usr/lib on non-amd64 systems):
$ env | grep LIB LD_LIBRARY_PATH=/home/ingo/opt/lib:/home/ingo/opt32/lib:/home/ingo/opt/gcc/lib64 $ mpirun env | grep LIB LD_LIBRARY_PATH=/usr/lib64:/home/ingo/opt/lib:/home/ingo/opt32/lib:/home/ingo/opt/gcc/lib64 This would normally not be a problem, but I am trying to overload some libraries in the /usr/lib64 directory in order to use the debugging STL of gcc. Why is /usr/lib64 added to the library path? Is there a reason for it? Or is it some configuration error on my system?
