updating hazelhen documentation

.gitignore

@@ -34,3 +34,5 @@
 *.ilg
 *.ind
 *.ist
+
+*.swp

d0_supercomputers.tex

@@ -247,7 +247,49 @@ but TBB by default is not built statically so add the following to the
 \begin{code}
 -dynamic -ltbb
 \end{code} 
-i.e. before the link command.
+i.e. before the link command. The environment used is as follows
+
+\begin{code}
+
+module switch PrgEnv-cray PrgEnv-intel 
+
+export COMPILER="Intel"
+export DISTRIBUTEDMEM=MPI
+export EXAHYPE_CC="CC"
+export EXAHYPE_FC="ftn"
+export MODE="Release"
+export SHAREDMEM=TBB
+export TBB_PATH=$INTEL_PATH/tbb
+export TBB_INC="-I${TBB_PATH}/include"
+export TBB_SHLIB="-L${TBB_PATH}/lib/intel64/gcc4.7 -ltbb" 
+export CRAYPE_LINK_TYPE=dynamic
+
+\end{code}
+
+To run a simulation on Hazelhen, the following are required for the
+submit script, in addition to the normal variables
+\begin{code}
+#PBS -m abe
+#PBS -l nodes=5:ppn=24
+#PBS -q test
+
+
+module switch PrgEnv-cray PrgEnv-intel 
+module swap intel intel/18.0.1.163
+
+
+export TBB_PATH=$INTEL_PATH/tbb
+export TBB_INC="-I${TBB_PATH}/include"
+export TBB_SHLIB="-L${TBB_PATH}/lib/intel64/gcc4.7 -dynamic -ltbb" 
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TBB_PATH/lib/intel64/gcc4.7
+
+export KMP_AFFINITY=disabled
+
+aprun -cc none -n 30 -N 6 -d 4 ./ExaHyPE $SPECFILE
+\end{code}
+
+where $n$ is the number of MPI ranks, $N$ is the number of nodes, $d$ is
+the number of threads.