Hi, I was trying to install openmpi-1.2.2 under 2.4.32 kernel.
./configure --prefix=/mnt/shared/jroy/openmpi-1.2.2/ CC=icc CXX=icpc F77=ifort FC=ifort make all install It installed successfully, but during mpirun I got... mpirun --mca btl_tcp_if_include eth0 -n 4 -bynode -hostfile test_nodes ./a.out 1 16000000 [node1:31916] mca: base: component_find: unable to open paffinity linux: file not found (ignored) [node2:09324] mca: base: component_find: unable to open paffinity linux: file not found (ignored) [node3:09264] mca: base: component_find: unable to open paffinity linux: file not found (ignored) [node4:09264] mca: base: component_find: unable to open paffinity linux: file not found (ignored) [node1:31922] mca: base: component_find: unable to open paffinity linux: file not found (ignored) I ran ompi_info command to look for "MCA paffinity", but couldn't find this components... Is the configuration required some extra features? Regards, Jayanta