Add Test case on few nodes slurm script

specfem3d/job_script/job_davide_test_case_C.slurm

+#!/bin/bash
+#SBATCH -J Test_case_A
+#SBATCH --time=01:30:00
+#SBATCH --nodes=1
+#SBATCH --ntasks-per-node=6
+##SBATCH --ntasks-per-core=1
+#SBATCH --cpus-per-task=2
+#SBATCH --partition=dvd_usr_prod
+##SBATCH --qos=noQOS
+#SBATCH --mem=86000
+#SBATCH --out=Test_case_C_davide-%j.out 
+#SBATCH --err=Test_case_C_davide-%j.err 
+#SBATCH --account=Dec00_5IPwp7
+#SBATCH --gres=gpu:4 # (N=1,4)
+
+set -e
+source ../env/env_davide
+
+export OMP_NUM_THREADS=$SLURM_CPUS_PER_TASK
+export OMP_PLACES=threads
+export OMP_PROC_BIND=true
+
+cd $install_dir/TestCaseC/specfem3d_globe
+
+#ulimit -s unlimited
+
+MESHER_EXE=./bin/xmeshfem3D
+SOLVER_EXE=./bin/xspecfem3D
+
+# backup files used for this simulation
+cp DATA/Par_file OUTPUT_FILES/
+cp DATA/STATIONS OUTPUT_FILES/
+cp DATA/CMTSOLUTION OUTPUT_FILES/
+
+##
+## mesh generation
+##
+sleep 2
+
+echo
+echo `date`
+echo "starting MPI mesher"
+echo
+
+MPI_PROCESS=` echo "$SLURM_NNODES*$SLURM_NTASKS_PER_NODE" | bc -l` 
+echo "SLURM_NTASKS_PER_NODE = " $SLURM_NTASKS_PER_NODE
+echo "SLURM_CPUS_PER_TASKS = " $SLURM_CPUS_PER_TASK
+echo "SLURM_NNODES=" $SLURM_NNODES
+echo "MPI_PROCESS $MPI_PROCESS"
+
+time srun -n ${MPI_PROCESS} ${MESHER_EXE}
+echo "  mesher done: `date`"
+echo
+
+##
+## forward simulation
+##
+sleep 2
+
+echo
+echo `date`
+echo starting run in current directory $PWD
+echo
+time srun -n ${MPI_PROCESS} ${SOLVER_EXE}
+
+echo "finished successfully"
+echo `date`