Glossary of Terms
A short glossary of the terms and commands you come across when using Anunna. Where there is a page with more detail, the entry links to it.
- Apptainer
- The container runtime used on Anunna (formerly Singularity), which runs software packaged as a self-contained image. See Apptainer.
- Bucket
- A snapshot of a compiler-and-toolchain generation (for example
2023,2024) that must be loaded before its modules become visible. See Environment Modules. - Container
- A self-contained software image that bundles an application with its dependencies, so it runs the same anywhere. See Apptainer.
- GRES
- "Generic RESource" — a resource requested with
--gres, most often a GPU (for example--gres=gpu:1). - Job array
- A single submission that creates many near-identical tasks, each with its own
$SLURM_ARRAY_TASK_ID. See Array Jobs. - Login node
- The machine you connect to over SSH; an access point for editing, data transfer, and submitting jobs — not for computation. See Login Nodes.
- Lustre
- The fast, parallel filesystem (mounted at
/lustre) used for active compute work. See Compute Storage. - Module
- A unit of software loaded with
module load, provided through the Lmod environment-modules system. See Environment Modules. - MPI
- The Message Passing Interface, used to run a program across many cores or nodes. See Performance Optimization/Multiple nodes (MPI).
- NFS
- The network filesystem that hosts home directories — reliable but slower than Lustre. See Home Directory.
- Open OnDemand (OOD)
- The open-source software behind the web portal at apps.anunna.wur.nl. See Portal Overview.
- Partition
- A named set of compute nodes you submit jobs to (
main,gpu,gpu_amd). See Partitions / Queues. - QoS
- "Quality of Service" — a policy attached to your account that governs job priority and resource limits.
- sacct
- SLURM command that reports the accounting record (state, exit code, resource use) of finished jobs. See Monitoring Jobs.
- salloc
- SLURM command that allocates resources for an interactive session.
- sbatch
- SLURM command that submits a batch script as a job. See Batch Jobs.
- Scratch
- Temporary working storage (
/lustre/scratch) that is not backed up and may be purged automatically. See Compute Storage. - .sif
- The Singularity Image Format file that holds an Apptainer container image. See Apptainer.
- sinteractive
- Anunna helper that starts an interactive job (a shell on a compute node). See Interactive Jobs.
- SLURM
- The scheduler that allocates resources and runs jobs on the cluster. See Scheduler Overview (Slurm).
- squeue
- SLURM command that lists jobs currently known to the scheduler. See Monitoring Jobs.
- srun
- SLURM command that launches a task, or parallel tasks, within an allocation.
- Wall time
- The real-world time limit set on a job with
--time; the job is stopped when it is reached.