| Performance depends only on the worker node capabilities along with IO. If the worker nodes are the same then may be the nodes under salloc use network drive (main storage) for IO which may slow down the tasks.
There are many tools available to localize the bottleneck in the task performance. You may also measure bandwidth between the local node and the main storage using “dd” command for instance. Sent from my iPhone On Jul 4, 2023, at 9:04 AM, Татьяна Озерова <tanyaozerova1...@gmail.com> wrote:
Thank you for your answer! And if slurm workers are identical, what can be the reason? Can interactive mode affect the performance? I have submitted the task with the help of "srun {{ name_of_task }} --pty bash", and the result is the same as for launching with salloc. Thanks in advance!
They should not affect the task performance.
May be the cluster configuration allocated slow machines for salloc.
salloc and sbatch have different purposes: - salloc is used to allocate a set of resources to a job. Once the resources have been allocated, the user can run a command or script on the allocated resources.
- sbatch is used to submit a batch script to Slurm. The batch script contains a list of commands or scripts that will be executed on the allocated resources.
In general, salloc is used for jobs that need to be run interactively, such as jobs that require a shell or jobs that need to be debugged. sbatch is used for jobs that can be run in the background, such as long-running jobs or jobs that are submitted by a queuing system. Here is a table that summarizes the key differences between salloc and sbatch: | Feature | salloc | sbatch |
|---|
| Purpose | Allocate resources and run a command or script | Submit a batch script | | Interactive | Yes | No | | Background | No | Yes | | Queuing system | No | Yes |
Here are some examples of how to use salloc and sbatch: - To allocate 2 nodes with 4 CPUs each and run the command
ls, you would use the following command:
Code snippet salloc -N 2 -c 4 ls
- To submit a batch script called
my_job.sh that contains the command python my_script.py, you would use the following command:
Code snippet sbatch my_job.sh
For more information on salloc and sbatch, please see the following documentation: Sent from my iPhone Hello! I have question about way of launching tasks in Slurm. I use the service in cloud and submit an application with sbatch or salloc. As far as I am concerned, the commands are similar: they allocate resources for counting users tasks and run them. However, I have received different results in cluster performance for the same task (task execution time is too long in case of salloc). So my question is what is the difference between these two commands, that can affect on task performance? Thank you beforehand.
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