...
| Codeblock |
|---|
| title | Job submission |
|---|
| collapse | true |
|---|
|
blogin> sbatch myjobscipt.slurm
Submitted batch job 8028673
blogin> ls slurm-8028673.out
slurm-8028673.out |
Slurm scripts
A slurm script is submitted to the job scheduler slurm. It contains
- the control about requested compute nodes and
- commands to start your binary.
Using mpirun
Using mpirun (from the MPI library) to start the binary you need to switch off slurm binding by adding export SLURM_CPU_BIND=none.
MPI only
| Codeblock |
|---|
| title | MPI, full node |
|---|
| collapse | true |
|---|
|
#!/bin/bash
#SBATCH --nodes=2
#SBATCH --partition=cpu-clx:test
module load openmpi/gcc/5.0.3
export SLURM_CPU_BIND=none
mpirun -np 192 --map-by ppr:96:node ./hello.bin |
| Codeblock |
|---|
| title | MPI, half node |
|---|
| collapse | true |
|---|
|
#!/bin/bash
#SBATCH --nodes=2
#SBATCH --partition=cpu-clx:test
module load openmpi/gcc/5.0.3
export SLURM_CPU_BIND=none
mpirun -np 96 --map-by ppr:48:node ./hello.bin |
MPI, OpenMP
You can run one code compiled with MPI and OpenMP. The examples cover example covers the setup
- 2 nodes,
- 4 processes per node, 24 threads per process.
...
| Codeblock |
|---|
| title | MPI, full node |
|---|
| collapse | true |
|---|
|
#!/bin/bash
#SBATCH --nodes=2
#SBATCH --partition=cpu-clx:test
srun --ntasks-per-node=96 ./hello.bin |
MPI, OpenMP
You can run one code compiled with MPI and OpenMP. The example covers the setup
- 2 nodes,
- 4 processes per node, 24 threads per process.
| Codeblock |
|---|
| title | MPI, OpenMP, full node |
|---|
| collapse | true |
|---|
|
#!/bin/bash
#SBATCH --nodes=2
#SBATCH --partition=cpu-clx:test
export OMP_PROC_BIND=spread
export OMP_NUM_THREADS=24
srun --ntasks-per-node=4 --cpus-per-task=48 ./hello.bin |
...