easley-tutorial

Compilation

Load your build environment:

module load gcc/8.4.0
module load openmpi/4.0.3
module load cmake/3.19.1

Run CMake to configure the build

cmake -B build -S . -DCMAKE_INSTALL_PREFIX=install

Run the build and install the software

cmake --build build
cmake --install build

Run jobs

In the jobs directory, there are different examples for running the program:

• 00-serial: serial execution on 1 processor
• 01-openmp: parallel execution on 4 processors using OpenMP (threaded parallelism)
• 02-mpi: parallel execution on 4 processors using MPI (distributed parallelism)
• 03-mpi+openmp: parallel execution on 4 processors using MPI+OpenMP (multilevel parallelism)

You can run a job using the sbatch command to submit it:

cd 00-serial
sbatch job.sh

and inspect the output in the slurm-*.out file that is created. The job file job.sh configures the parameters of the job.

To check the status of your jobs in the queue, use squeue:

squeue -u <username>

The -u option filters only jobs for your <username>. You can omit it to see the whole queue.