Re: [HTCondor-users] could not make temporary directory: `/var/lib/condor/execute/dir_ Re: Fw: Xvfb | Docker Universe | Can't open display | (but works with docker run)

[JEAN-YVES SGRO <jsgro@xxxxxxxx>]

Thank you very much Dima,

I was able to determine that singularity is installed with

condor_status -l | grep -i singularity

I was able to run the example shown in the singularity-support.html page, even also if replacing the "sleep" executable to /bin/pwd.

The manual html page is not very clear nor targetted for end-users. It seems that there are very specific steps for the job to run inside a container. Apparently when I ran my larger Xmgrace I can surmise that it is not run within the container based on the error:

$ cat err_singu.0

/etc/profile.d/dymotd.sh: line 44: ip: command not found

Can't locate Chart/Graph.pm in @INC (@INC contains: /usr/local/lib64/perl5 [truncated]

At the same time /etc/profile.d/dymotd.sh

 does not exist on the actual machine..

But since it cannot locate the Graph.pm perl module (which was found under the Docker Universe) I suppose that, as they say at the top of the singularity-support.html page: "...a job can opt into running inside a container"

But that requires that the option is available...

At this point I cannot know for sure if the job was in a container or not.

Since it cannot find the programs that are built in the image, I suppose it ran out of the container.

Thanks for the suggestion... Perhaps someone from Madison will be able to clarify what happens...

JYS

---

From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> on behalf of dmitri.maziuk@xxxxxxxxx <dmitri.maziuk@xxxxxxxxx>
Sent: Sunday, October 31, 2021 2:31 PM
To: htcondor-users@xxxxxxxxxxx <htcondor-users@xxxxxxxxxxx>
Subject: Re: [HTCondor-users] could not make temporary directory: `/var/lib/condor/execute/dir_ Re: Fw: Xvfb | Docker Universe | Can't open display | (but works with docker run)

 

On 2021-10-31 1:55 PM, JEAN-YVES SGRO via HTCondor-users wrote:
...
> Any pointer on how to run a Docker file on Singularity... Can it run it un the Docker Universe using a Singularity container since Singularity is not installed.

No. You can build a .sif from Dockerfile but if singularity isn't
installed on the worker node(s), you can't run it in singularity. :(

I never tried it myself so I am not sure exactly what this means:
https://htcondor.readthedocs.io/en/latest/admin-manual/singularity-support.html
-- whether the .sif job will fail, or still run, just not in a
container. If a .sif will "just run" in a regular universe, that may do it.

Dima

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