[slurm-users] [EXTERNAL] slurm-users Digest, Vol 55, Issue 5

Wed May 4 00:57:00 UTC 2022

Ahhhh, that was it. The failure state was persisting after the problem was fixed. This loop put all my nodes back into idle state.

for H in {01..08}; do scontrol update NodeName=sjc01enadsapp$H State=UNDRAIN; done

Thanks, David.

-jimk

From: slurm-users <slurm-users-bounces at lists.schedmd.com> on behalf of slurm-users-request at lists.schedmd.com <slurm-users-request at lists.schedmd.com>
Date: Tuesday, May 3, 2022 at 5:20 PM
To: slurm-users at lists.schedmd.com <slurm-users at lists.schedmd.com>
Subject: [EXTERNAL] slurm-users Digest, Vol 55, Issue 5
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Today's Topics:

1. Re: gres/gpu count lower than reported (David Henkemeyer)

----------------------------------------------------------------------

Message: 1
Date: Tue, 3 May 2022 14:05:45 -0700
From: David Henkemeyer <david.henkemeyer at gmail.com>
To: Slurm User Community List <slurm-users at lists.schedmd.com>
Subject: Re: [slurm-users] gres/gpu count lower than reported
Message-ID:
<CABjsmAH+z=xA9_QxvRyg-1uSj_YPWzamCbE5tybJcsm6zfsN0g at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

I have found that the "reason" field doesn't get updated after you correct
the issue. For me, its only when I move the node back to the idle state,
that the reason field is then reset. So, assuming /dev/nvidia[0-3] is
correct (I've never seen otherwise with nvidia GPUs), then try taking them
back into the idle state. Also, keep an eye on the slurmctld and slurmd
logs. They usually are quite helpful to highlight what the issue is.

David

On Tue, May 3, 2022 at 11:50 AM Jim Kavitsky <JimKavitsky at lucidmotors.com>
wrote:

> Hello Fellow Slurm Admins,
>
>
>
> I have a new Slurm installation that was working and running basic test
> jobs until I added gpu support. My worker nodes are now all in drain state,
> with gres/gpu count reported lower than configured (0 < 4)
>
>
>
> This is in spite of the fact that nvidia-smi reports all four A100?s as
> active on each node. I have spent a good chunk of a week googling around
> for the solution to this, and trying variants of the gpu config
> lines/restarting daemons without any luck.
>
>
>
> The relevant lines from my current config files are below. The head node
> and all workers have the same gres.conf and slurm.conf files. Can anyone
> suggest anything else I should be looking at or adding? I?m guessing that
> this is a problem that many have faced, and any guidance would be greatly
> appreciated.
>
>
>
> root at sjc01enadsapp00:/etc/slurm-llnl# grep gpu slurm.conf
>
> GresTypes=*gpu*
>
> NodeName=sjc01enadsapp0[1-8] RealMemory=2063731 Sockets=2
> CoresPerSocket=16 ThreadsPerCore=2 Gres=*gpu*:4 State=UNKNOWN
>
>
>
> root at sjc01enadsapp00:/etc/slurm-llnl# cat gres.conf
>
> NodeName=sjc01enadsapp0[1-8] Name=gpu File=/dev/nvidia[0-3]
>
>
>
>
>
>
>
> root at sjc01enadsapp00:~# sinfo -N -o "%.20N %.15C %.10t %.10m %.15P %.15G
> %.75E"
>
> NODELIST CPUS(A/I/O/T) STATE MEMORY PARTITION
> GRES
> REASON
>
> sjc01enadsapp01 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp02 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp03 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp04 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp05 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp06 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp07 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
> sjc01enadsapp08 0/0/64/64 drain 2063731 Primary*
> gpu:4 gres/gpu count reported lower than
> configured (0 < 4)
>
>
>
>
>
> root at sjc01enadsapp07:~# nvidia-smi
>
> Tue May 3 18:41:34 2022
>
>
> +-----------------------------------------------------------------------------+
>
> | NVIDIA-SMI 470.103.01 Driver Version: 470.103.01 CUDA Version: 11.4
> |
>
>
> |-------------------------------+----------------------+----------------------+
>
> | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr.
> ECC |
>
> | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute
> M. |
>
> | | | MIG
> M. |
>
>
> |===============================+======================+======================|
>
> | 0 NVIDIA A100-PCI... On | 00000000:17:00.0 Off |
> 0 |
>
> | N/A 42C P0 49W / 250W | 4MiB / 40536MiB | 0%
> Default |
>
> | | |
> Disabled |
>
>
> +-------------------------------+----------------------+----------------------+
>
> | 1 NVIDIA A100-PCI... On | 00000000:65:00.0 Off |
> 0 |
>
> | N/A 41C P0 48W / 250W | 4MiB / 40536MiB | 0%
> Default |
>
> | | |
> Disabled |
>
>
> +-------------------------------+----------------------+----------------------+
>
> | 2 NVIDIA A100-PCI... On | 00000000:CA:00.0 Off |
> 0 |
>
> | N/A 35C P0 44W / 250W | 4MiB / 40536MiB | 0%
> Default |
>
> | | |
> Disabled |
>
>
> +-------------------------------+----------------------+----------------------+
>
> | 3 NVIDIA A100-PCI... On | 00000000:E3:00.0 Off |
> 0 |
>
> | N/A 38C P0 45W / 250W | 4MiB / 40536MiB | 0%
> Default |
>
> | | |
> Disabled |
>
>
> +-------------------------------+----------------------+----------------------+
>
>
>
>
>
> +-----------------------------------------------------------------------------+
>
> | Processes:
> |
>
> | GPU GI CI PID Type Process name GPU
> Memory |
>
> | ID ID Usage
> |
>
>
> |=============================================================================|
>
> | 0 N/A N/A 2179 G /usr/lib/xorg/Xorg
> 4MiB |
>
> | 1 N/A N/A 2179 G /usr/lib/xorg/Xorg
> 4MiB |
>
> | 2 N/A N/A 2179 G /usr/lib/xorg/Xorg
> 4MiB |
>
> | 3 N/A N/A 2179 G /usr/lib/xorg/Xorg
> 4MiB |
>
>
> +-----------------------------------------------------------------------------+
>
>
>
>
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