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--- language:langs:dflow [2020/12/22 10:17]
rajit [Deterministic and non-deterministic merge]
+++ language:langs:dflow [2021/06/02 12:04]
rajit [Examples]
@@ Line 120: / Line 120: @@
 </code>
 For each output generated, the control channel ''c'' will produce a 0 or 1 token depending on the choice made by the arbiter.
+===== Sink =====
+A dataflow sink simply receives and discards a token from a channel. Sinks are not needed in general, since the channel that corresponds to the sink can be optimized away by an implementation. However, sinks can be useful when a particular process is re-used in a context when one of its outputs is not used. The syntax is the following:
+<code>
+dataflow {
+   c -> *
+}
+</code>
+The values received on ''c'' are discarded by the sink.
 ====== Examples ======
@@ Line 147: / Line 157: @@
 }
 </code>
+====== Clusters and Ordering ======
+It can be convenient to group dataflow elements into clusters. The syntax for grouping dataflow elements is:
+<code>
+dataflow {
+   ...
+   dataflow_cluster {
+      a + b -> c;
+      a - b -> d
+   }
+   ...
+}
+</code>