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https://issues.apache.org/jira/browse/YARN-9120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722122#comment-16722122
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Peter Bacsko commented on YARN-9120:
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{quote}
I'm also thinking in what scenario would a user wants a diverse configuration 
in the cluster. As far as I know, the Ambari can only update configuration at 
the cluster level.
{quote}

IMO it's very reasonable to assume that GPU-based cluster will not homogeneous. 
If you think about it, an Nvidia V100 costs around 5000-6000 USD which is a lot 
of money. If a cluster consists of 500 nodes, it's very likely that they 
install only 20-30 of these silicone beasts (just a random number). Equipping 
every node with an expensive GPU is a really big investment.

As far as the new property is concerned, the new value {{off}} makes sense to 
me, it looks more natural.



> Need to have a way to turn off GPU auto-discovery in GpuDiscoverer
> ------------------------------------------------------------------
>
>                 Key: YARN-9120
>                 URL: https://issues.apache.org/jira/browse/YARN-9120
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Szilard Nemeth
>            Assignee: Szilard Nemeth
>            Priority: Major
>
> GpuDiscoverer.getGpusUsableByYarn either parses the user-defined GPU devices 
> or should have the value 'auto' (from property: 
> yarn.nodemanager.resource-plugins.gpu.allowed-gpu-devices)
> In some circumstances, users would want to exclude a node from scheduling, so 
> they should have an option to turn off auto-discovery.
> It's straightforward that this is possible by removing the GPU 
> resource-plugin from YARN's config along with GPU-related config in 
> container-executor.cfg, but doing that with a dedicated value for 
> yarn.nodemanager.resource-plugins.gpu.allowed-gpu-devices is a more 
> lightweight approach.



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