probably found the issue

Can you add a bit more from the log for more context as well?

What sort of data would be stored in the

venvs-build

folder?

ClumsyElephant70 temporary (lifetime of the task execution) virtual environment, including the code etc. It is deleted and recreated for every new task launched (or restored from cache, if venvs_cache is enabled)

Hi AgitatedDove14 one more question about efficient caching, is it possible to cache/share docker images between agents?

the cache on the host is mounted as nfs and the nfs server was configured to not allow the clients to do root operations

Ok it is more a docker issue, I guess it is not feasible reading the thread.

Because I think you need to map out the pip cache folder to the docker

W: chown to _apt:root of directory /var/cache/apt/archives/partial failed - SetupAPTPartialDirectory (1: Operation not permitted) W: chmod 0700 of directory /var/cache/apt/archives/partial failed - SetupAPTPartialDirectory (1: Operation not permitted) Collecting pip==20.1.1

it appears at multiple places. Seems like the mapping of pip and apt cache does work but the access rights are now an issue

Try running with all them marked out so it will take defaults

or only not for apt and pip?

` # pip cache folder mapped into docker, used for python package caching
docker_pip_cache = /clearml-cache/pip-cache
# apt cache folder mapped into docker, used for ubuntu package caching
docker_apt_cache = /clearml-cache/apt-cache

docker_internal_mounts {
     apt_cache: "/clearml-cache/apt-cache"
     pip_cache: "/clearml-cache/pip-cache"
     vcs_cache: "/clearml-cache/vcs-cache"
     venv_build: "/clearml-cache/venvs-builds"
     pip_download: "/clearml-cache/pip-download-cache"
     ssh_folder: "/clearml-cache/ssh-cache"
} `

hm... Now with commenting it out I have the following problem:
docker_pip_cache = /clearml-cache/pip-cache
On host:
drwxrwxrwx 5 root root 5 Mar 10 17:17 pip-cache

in task logs:
chown: changing ownership of '/root/.cache/pip': Operation not permitted

The agents also share the clearml.conf file which causes some issue with the worker_id/worker_name. They all want to be ubuntu:gpu0. Any idea how I can randomize it? Setting the CLEARML_WORKER_ID env var somehow does not work

are they in conflict?

is it possible to cache/share docker images between agents?

Like a shared folder for docker pulled images?
https://forums.docker.com/t/how-to-share-the-images-at-all-the-local-hosts/24894/7
you might be able to share "/var/lib/docker/image" but I'm not sure how stable it is (definitely risky)

In theory it should have worked.
Can you send me the full Task log? (with cache and everything?)
I suspect since these are not the default folders, something is misconfigured / missing
(you can DM the log, so it won't end on a public the channel))

I want to cache as much as possible and /clearml-cache/venvs-cach (on the host) does contain caches venvs. But /clearml-cache/venvs-builds is empty. My question was how to also cache venvs_builds

So I don't need docker_internal_mounts at all?

Hi, I would like to understand how I can set the pip cache location for my agent,

ClumsyElephant70 by default the pip cache (and all other cache folders) are mounted back into the host itself ~/.clearml/
I'm assuming the idea is shared cache, if this is the case, do:
docker_pip_cache = ~/my_shared_nfs/pip-cachehttps://github.com/allegroai/clearml-agent/blob/e3e6a1dda81bee2dd20a64d09746568e415f1823/docs/clearml.conf#L139

They all want to be ubuntu:gpu0. Any idea how I can randomize it? Setting the CLEARML_WORKER_ID env var somehow does not work

You should not have this entry in the conf file, the "worker_id" should be unique (and is based on the "worker_name" as a prefix. You can control it via env variales:
CLEARML_WORKER_ID

So it should cache the venvs right?

Correct,

path: /clearml-cache/venvs-cache

Just making sure, this is the path to the host cache folder

ClumsyElephant70 I think I lost track of the current issue 😞 what's exactly not being cached (or working)?

Executing: ['docker', 'run',......] chown: changing ownership of '/root/.cache/pip': Operation not permitted Get:1 focal-security InRelease [114 kB] Get:2 focal InRelease [265 kB] Get:3 focal-updates InRelease [114 kBIt is at the top of the logs

Hi ClumsyElephant70 ,
What about
# pip cache folder mapped into docker, used for python package caching docker_pip_cache = ~/.clearml/pip-cache # apt cache folder mapped into docker, used for ubuntu package caching docker_apt_cache = ~/.clearml/apt-cache

AgitatedDove14 one more thing regarding the initial question,
apt-cache , pip-cache , pip-download-cache , vcs-cache and venvs-cache contain data on the shared clearml-cache but venvs-build does not? What sort of data would be stored in the venvs-build folder? I do have venvs_dir = /clearml-cache/venvs-builds specified in the clearml.conf

I do have this setting in my clearml.conf file
venvs_cache: { free_space_threshold_gb: 50.0 path: /clearml-cache/venvs-cache }So it should cache the venvs right? I also see content in the /clearml-cache/venvs-cache folder. Because I have venvs_cache configured there is nothing in venvs-build, since it uses the cache?

so now there is the user conflict between the host and the agent inside the container

I think you need to map internal docker pip cache to /root/.cache/pip

Hey Natan, good point! But I have actually set both

Exactly, all agents should share the cache that is mounted via nfs. I think it is working now 🙂