Compilers and MKL

Table of Contents

• MKL
• gfortran
• Profiling

MKL

Test...Here goes tmole description...

gfortran

Example from gfortran version gcc-5.4.0

• Download gcc tar.gz file https://ftp.gnu.org/gnu/gcc/
• Configure and install according (the "make" step can take several hours)

  tar xzf gcc-5.4.0.tar.gz
  cd gcc-4.6.2
  ./contrib/download_prerequisites
  cd ..
  mkdir objdir
  cd objdir
  $PWD/../gcc-5.4.0/configure --prefix=$HOME/gcc-5.4.0 --enable-languages=c,c++,fortran,go
  make
  make install
  

• Remember to configure the LD_LIBRARY_PATH for instance as (either in basrc or prefereble in a file "gcc-5.4.0.sh")

  export GFORTRAN=/home/erik/gcc-5.4.0/bin
  PATH=$HOME/bin:$GFORTRAN:$PATH
  if [ -z "$LD_LIBRARY_PATH" ]; then
   LD_LIBRARY_PATH="/home/erik/gcc-5.4.0/lib/../lib64"
  else
   LD_LIBRARY_PATH="/home/erik/gcc-5.4.0/lib/../lib64:$LD_LIBRARY_PATH"
  fi
  export LD_LIBRARY_PATH
  export PATH
  

• gfortran can then be activated by source gcc-5.4.0.sh

gcc and g++ updrade on CentOS

Profiling

make regular run...