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update lustre striping command #222

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Aug 18, 2025
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update lustre striping command #222

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7 changes: 4 additions & 3 deletions docs/guides/gb25.md
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Original file line number Diff line number Diff line change
Expand Up @@ -32,8 +32,9 @@ The system [Daint][ref-cluster-daint] will be expanded to approximately 2350 Gra
```bash
#!/bin/bash

#SBATCH --account=<account>
#SBATCH --partition=<todo>
#SBATCH --account=<group>
#SBATCH --partition=normal
#SBATCH --reservation=<group>

srun --uenv=prgenv-gnu/24.11:v2 --view=default -n? -N? ....
```
Expand All @@ -51,7 +52,7 @@ The fix is to update how the squashfs file for the uenv or container used by you
```console title="set lustre striping on uenv squashfs file"
$ uenv image inspect prgenv-gnu/24.11:v2 --format='{sqfs}'
/capstor/scratch/cscs/bcumming/.uenv-images/images/6068794b820fb4dd91019d020d6d98334a2f9fd23035a5e4a2f72f9dda5f1260/store.squashfs
$ lfs setstripe --stripe-count -1 --stripe-size 1M $(uenv image inspect prgenv-gnu/24.11:v2 --format='{sqfs}')
$ lfs migrate --stripe-count 20 --stripe-size 1M $(uenv image inspect prgenv-gnu/24.11:v2 --format='{sqfs}')
```

As an additional precaution, we recommend to increase the default wait threshold for `MPI_Init` from 180 seconds to 300.
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