Kumar, Remove all the CUDA and replace with: Nvidia CUDA Versions: 7.0.28 Environment export PATH=$PATH:/soft/compilers/cuda-7.0.28/bin:$PATH export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/soft/compilers/cuda-7.0.28/lib Replace Intel with: Intel Parallel Studio XE Version: 2015 Update 3 Path: /soft/compilers/intel Environment export INTEL_LICENSE_FILE=28518@ftsn2 # Compilers source /soft/compilers/intel/composer_xe_2015/bin/compilervars.sh intel64 # Vtune source /soft/compilers/intel/vtune_amplifier_xe/amplxe-vars.sh # Advisor source /soft/compilers/intel/advisor_xe/advixe-vars.sh # Inspector source /soft/compilers/intel/inspector_xe/inspxe-vars.sh # IMPI source /soft/compilers/intel/impi_latest/bin64/mpivars.sh Remove PAPI – k1om (MIC Native Build) Remove existing MPICH Mpich (compiled with icc, ifort) Version: 3.1.4 Path: /soft/libraries/mpi/mpich-intel-3.1.4 Environment export PATH=$PATH:/soft/libraries/mpi/mpich-intel-3.1.4/bin:$PATH export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/soft/libraries/mpi/mpich-intel-3.1.4/lib Mpich (compiled with gcc, gfortran) Version: 3.1.4 Path: /soft/libraries/mpi/mpich-gcc-3.1.4 Environment export PATH=$PATH:/soft/libraries/mpi/mpich-gcc-3.1.4/bin:$PATH export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/soft/libraries/mpi/mpich-gcc-3.1.4/lib