+|cudaVersionMin|string|Required. The CUDA SDK version corresponding to the minimum driver version supported by the container (generally, the SDK version 'X.Y' the application was compiled against).|
+|cudaComputeCapability|string|Required. The minimum CUDA hardware capability (in 'X.Y' format) required by the application's PTX or C++ GPU code (will be JIT compiled for the available hardware).|
+|cudaDeviceCountMin|integer|Minimum number of GPU devices to allocate on a single node. Required.|
+|cudaDeviceCountMax|integer|Maximum number of GPU devices to allocate on a single node. Optional. If not specified, same as @cudaDeviceCountMin@.|
+
+h2(#UsePreemptible). arv:UsePreemptible
+
+Specify whether a workflow step should request preemptible (e.g. AWS Spot market) instances. Such instances are generally cheaper, but can be taken back by the cloud provider at any time (preempted) causing the step to fail. When this happens, Arvados will automatically re-try the step, up to the configuration value of @Containers.MaxRetryAttempts@ (default 3) times.
+
+table(table table-bordered table-condensed).
+|_. Field |_. Type |_. Description |
+|usePreemptible|boolean|Required, true to opt-in to using preemptible instances, false to opt-out.|
+
+h2. arv:dockerCollectionPDH
+
+This is an optional extension field appearing on the standard @DockerRequirement@. It specifies the portable data hash of the Arvados collection containing the Docker image. If present, it takes precedence over @dockerPull@ or @dockerImageId@.
+
+<pre>
+requirements:
+ DockerRequirement:
+ dockerPull: "debian:10"
+ arv:dockerCollectionPDH: "feaf1fc916103d7cdab6489e1f8c3a2b+174"
+</pre>
+
+h1. Deprecated extensions
+
+The following extensions are deprecated because equivalent features are part of the CWL v1.1 standard.
+
+{% codeblock as yaml %}
+hints:
+ cwltool:LoadListingRequirement:
+ loadListing: shallow_listing
+ arv:ReuseRequirement:
+ enableReuse: false
+ cwltool:TimeLimit:
+ timelimit: 14400
+{% endcodeblock %}
+
+h2. cwltool:LoadListingRequirement
+
+For CWL v1.1 scripts, this is deprecated in favor of "loadListing":https://www.commonwl.org/v1.1/CommandLineTool.html#CommandInputParameter or "LoadListingRequirement":https://www.commonwl.org/v1.1/CommandLineTool.html#LoadListingRequirement
+
+In CWL v1.0 documents, the default behavior for Directory objects is to recursively expand the @listing@ for access by parameter references an expressions. For directory trees containing many files, this can be expensive in both time and memory usage. Use @cwltool:LoadListingRequirement@ to change the behavior for expansion of directory listings in the workflow runner.
+
+table(table table-bordered table-condensed).
+|_. Field |_. Type |_. Description |
+|loadListing|string|One of @no_listing@, @shallow_listing@, or @deep_listing@|
+
+*no_listing*: Do not expand directory listing at all. The @listing@ field on the Directory object will be undefined.
+
+*shallow_listing*: Only expand the first level of directory listing. The @listing@ field on the toplevel Directory object will contain the directory contents, however @listing@ will not be defined on subdirectories.
+
+*deep_listing*: Recursively expand all levels of directory listing. The @listing@ field will be provided on the toplevel object and all subdirectories.
+
+h2. arv:ReuseRequirement
+
+For CWL v1.1 scripts, this is deprecated in favor of "WorkReuse":https://www.commonwl.org/v1.1/CommandLineTool.html#WorkReuse .
+
+Enable/disable work reuse for current process. Default true (work reuse enabled).
+
+table(table table-bordered table-condensed).
+|_. Field |_. Type |_. Description |
+|enableReuse|boolean|Enable/disable work reuse for current process. Default true (work reuse enabled).|
+
+h2. cwltool:TimeLimit
+
+For CWL v1.1 scripts, this is deprecated in favor of "ToolTimeLimit":https://www.commonwl.org/v1.1/CommandLineTool.html#ToolTimeLimit
+
+Set an upper limit on the execution time of a CommandLineTool or ExpressionTool. A tool execution which exceeds the time limit may be preemptively terminated and considered failed. May also be used by batch systems to make scheduling decisions.
+
+table(table table-bordered table-condensed).
+|_. Field |_. Type |_. Description |
+|timelimit|int|Execution time limit in seconds. If set to zero, no limit is enforced.|