While he was able to recompile openmpi to solve the problem, I had no luck with my RedHat Enterprise 5 system.
Here is my story:
I had Quantum Espresso (QE) running without problem using openmpi.
However, when I tried to recompile QE with a recompiled fftw-2.1.5, it compiled without any error. But when I ran QE, it gave me the error below:
*** Process received signal ***
Signal: Segmentation fault (11)
Signal code: Address not mapped (1)
Failing at address: 0x22071b70
[ 0] /lib64/libpthread.so.0 [0x352420de70]
[ 1] /usr/lib64/liblapack.so.3(dsytf2_+0xc43) [0x2aaaaac9f5e3]
[ 2] /usr/lib64/liblapack.so.3(dsytrf_+0x407) [0x2aaaaaca0567]
[ 3] /opt/espresso-4.0.1/bin/pw.x(mix_rho_+0x828) [0x5044b8]
[ 4] /opt/espresso-4.0.1/bin/pw.x(electrons_+0xb37) [0x4eae47]
[ 5] /opt/espresso-4.0.1/bin/pw.x(MAIN__+0xbf) [0x42b3af]
[ 6] /opt/espresso-4.0.1/bin/pw.x(main+0xe) [0x6aad5e]
[ 7] /lib64/libc.so.6(__libc_start_main+0xf4) [0x352361d8a4]
[ 8] /opt/espresso-4.0.1/bin/pw.x [0x42b239]
*** End of error message ***
From what I read from the above links, it seems to be a bug in openmpi.
Please share your thoughts on this, thank you!