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Apptainer: Difference between revisions
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followed by runninng <code>docker image rm ID</code> (where ID is the image ID output from the <code>docker images</code> command) in order to free up the disk space associated with those other image layers on the system you are using. | followed by runninng <code>docker image rm ID</code> (where ID is the image ID output from the <code>docker images</code> command) in order to free up the disk space associated with those other image layers on the system you are using. | ||
=Miscellaneous Items= | |||
==Cleaning Apptainer's Cache Directory== | |||
Over time Apptainer's file cache will grow. To see where these files are run: | |||
apptainer cache list | |||
and to remove those files, run: | |||
apptainer cache clean | |||
==Changing Apptainer's Default Directories== | |||
You can override Apptainer's default temporary and cache directories by setting these environment variables before running <code>apptainer</code>: | |||
* <code>APPTAINER_CACHEDIR</code>: the directory where Apptainer will download and cache files | |||
* <code>APPTAINER_TMPDIR</code>: the directory where Apptainer will write temporary files including when building (squashfs) images | |||
For example, to tell Apptainer to use your scratch space for its cache and temporary files (which is might be a better location), one might run: | |||
$ mkdir -p /scratch/$USER/apptainer/{cache,tmp} | |||
$ export APPTAINER_CACHEDIR="/scratch/$USER/apptainer/cache" | |||
$ export APPTAINER_TMPDIR="/scratch/$USER/apptainer/tmp" | |||
before running <code>apptainer</code>. | |||