srun:tldr:ae7a9

The command srun is used to submit and execute parallel jobs on a High-Performance Computing (HPC) cluster or a similar environment. Let's break down the provided command:

srun: This is the command itself, used to submit and execute a parallel job.

--ntasks-per-node=${num_cores}: This option specifies the number of tasks (or processes) to be allocated per computing node. The ${num_cores} is a placeholder where a specific value can be assigned. It determines the number of CPU cores that will be allocated to each task.

--mem-per-cpu=${memory_MB}: This option specifies the amount of memory to be allocated per CPU core. The ${memory_MB} is a placeholder where a specific value can be assigned. It determines the memory limit for each task.

--pty: This option requests a pseudo-terminal (pty) to be allocated for the created task or job. A pty enables the execution of interactive commands within a shell session.

/bin/bash: This is the command or executable that will be executed within the allocated resources. In this case, it launches a Bash shell session for interactive command execution.

Overall, the given srun command is used to submit a job that runs an interactive Bash shell session with a specified number of tasks, with a specific number of CPU cores and memory allocated per task. The values for ${num_cores} and ${memory_MB} are typically provided by the user when running this command.