Download JURECA

 count = count + omp_get_num_threads(); total = omp_get_num_threads(); } // Print out. printf( "Hello world from processor %s, rank %d out of %d processors. OpenMP threads: %d\n", processor_name, rank, size, total); // Finalize the MPI environment. MPI_Finalize(); return 0; }
Compile the MPI program:
$ mpicc ­o mpi­prog mpi.c
Compile the Hybrid program:
$ mpicc ­openmp ­o hybrid­prog hybrid.c
7.4 Job submission
Job-script for an MPI job (file mpiscript.sh):
#!/bin/bash #SBATCH ­J mpitest #SBATCH ­N 4 #SBATCH ­­ntasks­per­node=24 #SBATCH ­o mpitest­%j.out #SBATCH ­e mpitest­%j.err #SBATCH ­­mail­type=END #SBATCH ­­mail­user=c.paschoulas@fz­juelich.de #SBATCH ­­partition=batch #SBATCH ­­time=00:30:00 # run MPI application below (with srun) srun ­N 4 ­­ntasks­per­node=24 ./mpi­prog Submit the MPI job-script:
$ sbatch ./mpiscript.sh
Job-script for a Hybrid job (file hybridtest.sh):
#!/bin/bash #SBATCH ­J hybridtest #SBATCH ­N 4 #SBATCH ­­ntasks­per­node=24 #SBATCH ­­cpus­per­task=2 #SBATCH ­o hybridtest­%j.out #SBATCH ­e hybridtest­%j.err #SBATCH ­­mail­type=END #SBATCH ­­mail­user=c.paschoulas@fz­juelich.de #SBATCH ­­partition=batch #SBATCH ­­time=00:30:00 export OMP_NUM_THREADS=${SLURM_CPUS_PER_TASK} # run Hybrid application below (with srun) srun ­N 4 ­­ntasks­per­node=24 ­c ${SLURM_CPUS_PER_TASK} ./hybrid­prog 58