unikernel/duniverse/dune_/doc/reference/actions/concurrent.rst

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+concurrent
+----------
+
+.. highlight:: dune
+
+.. describe:: (concurrent <DSL> ...)
+
+   Execute several commands concurrently and collect all resulting errors, if any.
+
+   .. warning:: The concurrency is limited by the ``-j`` flag passed to Dune.
+      In particular, if Dune is running with ``-j 1``, these commands will
+      actually run sequentially, which may cause a deadlock if they talk to
+      each other.
+
+   Example::
+
+     (concurrent
+      (run ./proga.exe)
+      (run ./progb.exe))