We are using slurm 24.05.5, and on that and previous versions when you do
sbatch and do not explicitly provide --account, it will use the
defaultAccount field in the sacctmgr database.
Our Unix group and Slurm allocation names are not the same (groups have a
two letter cluster name prefix, and allocations get a suffix indicating the
source of the funding, and many users belong to multiple allocations with
the same group). But you can test it; in particular, if you do "sacctmgr
show user USERNAME" where USERNAME is some user on your system, it should
list something like:
sacctmgr show user payerle
User Def Acct Admin
---------- ---------- ---------
payerle test-paid None
In this case, my default account is test-paid, and that will be used if I
do not explicitly specify an account when submitting a job. (And we do not
have a test-paid Unix group, and the closest unix group I belong to is
zt-test).
Actually, the behavior you describe with the groups is new to me (although
Google's AI also suggested something similar); I cannot find much in the
docs to support either your or my description of Slurm behavior. All I
know is that is how our Slurm behaves, and it has behaved that way in the
~10 years we have been using it. It is possible the behavior is dependent
upon other configuration settings in Slurm (Slurm is like that),
However, in https://slurm.schedmd.com/sacctmgr.html, under Specifications
for Users, it described the DefaultAccount field
<quote>
*DefaultAccount*=<*account*>
<https://slurm.schedmd.com/sacctmgr.html#OPT_DefaultAccount>Identify the
default bank account name to be used for a job if none is specified at
submission time. </quote>
I suggest you test it out; create a new account + group and user in the
account; verify expected account defaulting when using sbatch, examine the
defaultaccount for the user (sacctmgr show user), then change the name of
the group w/out changing the defaultaccount and verify account defaulting
works as expected.
On Thu, Jun 5, 2025 at 3:42 AM Bjørn-Helge Mevik via slurm-users <
slurm-users@lists.schedmd.com> wrote:
> "Burian, John via slurm-users" <slurm-users@lists.schedmd.com> writes:
>
> > My understanding is that in the absence of
> > an --account option, sbatch/salloc assumes the account is the user’s
> > primary POSIX group.
>
> Are you sure about that? I've never heard of such defaulting. My
> understanding is that without --account, sbatch/salloc will use what has
> been set as the user's DefaultAccount in Slurmdbd. That can be set
> explicitly with sacctmgr first time a user is created, but failing that,
> the account of the first user-account association of the user will be
> used as DefaultAccount.
>
> --
> B/H
>
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--
Tom Payerle
DIT-ACIGS/Mid-Atlantic Crossroads paye...@umd.edu
5825 University Research Park (301) 405-6135
University of Maryland
College Park, MD 20740-3831
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