X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/5c9aedbd8e623a518f5e1a92e4064a25ddd66353..e68177bfa8de36bd54f705e16e5c4854eafb29a2:/sdk/cwl/arvados_cwl/arv-cwl-schema.yml

diff --git a/sdk/cwl/arvados_cwl/arv-cwl-schema.yml b/sdk/cwl/arvados_cwl/arv-cwl-schema.yml
index 2a81ed4ed7..ee1834779d 100644
--- a/sdk/cwl/arvados_cwl/arv-cwl-schema.yml
+++ b/sdk/cwl/arvados_cwl/arv-cwl-schema.yml
@@ -13,6 +13,29 @@ $graph:
         _id: "@type"
         _type: "@vocab"
 
+- name: OutputDirType
+  type: enum
+  symbols:
+    - local_output_dir
+    - keep_output_dir
+  doc:
+    - |
+      local_output_dir: Use regular file system local to the compute node.
+      There must be sufficient local scratch space to store entire output;
+      specify this with `outdirMin` of `ResourceRequirement`.  Files are
+      batch uploaded to Keep when the process completes.  Most compatible, but
+      upload step can be time consuming for very large files.
+    - |
+      keep_output_dir: Use writable Keep mount.  Files are streamed to Keep as
+      they are written.  Does not consume local scratch space, but does consume
+      RAM for output buffers (up to 192 MiB per file simultaneously open for
+      writing.)  Best suited to processes which produce sequential output of
+      large files (non-sequential writes may produced fragmented file
+      manifests).  Supports regular files and directories, does not support
+      special files such as symlinks, hard links, named pipes, named sockets,
+      or device nodes.
+
+
 - name: RuntimeConstraints
   type: record
   doc: |
@@ -28,9 +51,14 @@ $graph:
       type: int?
       doc: |
         Size of file data buffer for Keep mount in MiB. Default is 256
-        MiB. Increase this to reduce cache thrashing in situtations such as
+        MiB. Increase this to reduce cache thrashing in situations such as
         accessing multiple large (64+ MiB) files at the same time, or
         performing random access on a large file.
+    - name: outputDirType
+      type: OutputDirType?
+      doc: |
+        Preferred backing store for output staging.  If not specified, the
+        system may choose which one to use.
 
 - name: APIRequirement
   type: record