Why I cannot override search path of dynamic libraries with LD_LIBRARY_PATH?

Question

Edit: I resolved this issue, the solution is below.

I am building a code in a shared computing cluster dedicated for scientific computing, thus I can only control fi

Answer 1

I see two possible reasons for this.

First, libfftw3_mpi.so may be linked with /usr/lib64/ as RPATH. In that case, providing LD_LIBRARY_PATH will have no effect. To check if it is your case, run readelf -d libfftw3_mpi.so | grep RPATH and see if it has /usr/lib64/ as a library path. If it does, use chrpath utility to change or remove it.

Alternatively, you may be running a system that does not support LD_LIBRARY_PATH at all (like HP-UX).