# How to use --gres=shard:64 in schrodinger submit.yml.erb
**URL:** https://discourse.openondemand.org/t/how-to-use-gres-shard-64-in-schrodinger-submit-yml-erb/3741
**Category:** Get Help
**Created:** [September 15, 2024, 4:21am UTC](https://discourse.openondemand.org/t/how-to-use-gres-shard-64-in-schrodinger-submit-yml-erb/3741 "2024-09-15T04:21:40Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@dai542](https://discourse.openondemand.org/u/dai542)
#### Post date: [September 15, 2024, 4:21am UTC](https://discourse.openondemand.org/t/how-to-use-gres-shard-64-in-schrodinger-submit-yml-erb/3741/1 "2024-09-15T04:21:40Z")
I have configured [GPU shard](https://slurm.schedmd.com/gres.html#Sharding) in SLURM to allow the GPU to be shared by multiple tasks. I would like to adopt this setup in the configuration file for [Schrodinger’s OOD](https://github.com/OSC/bc_osc_schrodinger). In the script, I can use `#SBATCH --gres=shard:2`. However, when setting `base_slurm_args + ["--gres", "shard:2"]` in `submit.yml.erb`, it gives the error ‘`no GPU device`’. How can I resolve this issue?”
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### Author:  [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)
#### Post date: [September 16, 2024, 1:02pm UTC](https://discourse.openondemand.org/t/how-to-use-gres-shard-64-in-schrodinger-submit-yml-erb/3741/2 "2024-09-16T13:02:18Z")
For a `gres` like that, don’t you need `--gpus` flag as well?
Don’t quite know why the directive works when the CLI flag doesn’t - maybe Slurm ignores it?
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### Author:  [@system](https://discourse.openondemand.org/u/system)
#### Post date: [March 15, 2025, 1:02pm UTC](https://discourse.openondemand.org/t/how-to-use-gres-shard-64-in-schrodinger-submit-yml-erb/3741/3 "2025-03-15T13:02:35Z")
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