[frontend,examples] Add example spec for testing

Author: gilbertmike

accelforge/frontend/arch.py

@@ -1409,6 +1409,7 @@ def _render_make_children(self) -> list[pydot.Node]:
 
 
 class Network(Branch, Component):
+    topology: str = "Mesh"
     def _flatten(
         self,
         compute_node: str,
@@ -1427,8 +1428,17 @@ def _flatten(
         else:
             return nodes
 
-    def get_fanout(self):
-        return int(math.prod(x.fanout for x in self.spatial))
+    def _parent2child_names(self, parent_name: str=None):
+        raise NotImplementedError()
+
+    def _render_node(self):
+        raise NotImplementedError()
+
+    def _render_make_children(self):
+        raise NotImplementedError()
+
+    def render(self) -> str:
+        raise NotImplementedError()
 
 
 class Hierarchical(Branch):

examples/arches/networked.yaml

@@ -0,0 +1,53 @@
+arch:
+  nodes:
+  - !Memory
+    name: MainMemory
+
+  - !Network
+    name: NoC
+    spatial:
+    - {name: X, fanout: 4}
+    - {name: Y, fanout: 4}
+    nodes:
+    - !Memory
+      name: GlobalBuffer
+      tensors: {keep: ~MainMemory, may_keep: All}
+      actions:
+      - {name: read, energy: 1, latency: {{GlobalBufferLatency}}}
+      - {name: write, energy: 1, latency: {{GlobalBufferLatency}}}
+
+    - !Memory
+      name: RowBuffer
+      tensors: {keep: ~MainMemory, may_keep: All}
+      actions:
+      - {name: read, energy: 1, latency: {{GlobalBufferLatency}}}
+      - {name: write, energy: 1, latency: {{GlobalBufferLatency}}}
+      spatial:
+      - {name: X, fanout: 4}
+
+    - !Memory
+      name: ColumnBuffer
+      tensors: {keep: ~MainMemory, may_keep: All}
+      actions:
+      - {name: read, energy: 1, latency: {{GlobalBufferLatency}}}
+      - {name: write, energy: 1, latency: {{GlobalBufferLatency}}}
+      spatial:
+      - {name: Y, fanout: 4}
+
+    - !Memory
+      name: DistributedBuffer
+      tensors: {keep: ~MainMemory, may_keep: All}
+      spatial:
+      - {name: X, fanout: 2}
+      - {name: Y, fanout: 2}
+
+    - !Hierarchy
+      spatial:
+      - {name: X, fanout: 4}
+      - {name: Y, fanout: 4}
+      nodes:
+      - !Memory
+        name: Scratchpad
+
+      - !Compute
+        name: MAC