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Fixes a bug in network compilation and multiple port polling #391

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Sep 30, 2022
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Fixes a bug in network compilation and multiple port polling #391

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8 changes: 6 additions & 2 deletions src/lava/magma/compiler/compiler_graphs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -232,8 +232,7 @@ def is_dag(self, graph: 'DiGraphBase' = None) -> ty.Tuple[bool,
graph.annotate_digraph_by_degree()

leaves = [node for node, nodeattr in graph.nodes.items() if
nodeattr['degdef'] == NodeAnnotation.PUREOUT or nodeattr[
'degdef'] == NodeAnnotation.PUREIN]
nodeattr['degdef'] == NodeAnnotation.PUREIN]
num_leaves = len(leaves)

if num_leaves > 0:
Expand All @@ -242,6 +241,11 @@ def is_dag(self, graph: 'DiGraphBase' = None) -> ty.Tuple[bool,
_, graph = self.is_dag(graph)

if len(list(graph.nodes)) > 1:
isolated_nodes = \
[node for node, nodeattr in graph.nodes.items() if nodeattr[
'degdef'] == NodeAnnotation.ISOLATED]
if len(list(graph.nodes)) == len(isolated_nodes):
return True, graph
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return False, graph
else:
return True, graph
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3 changes: 2 additions & 1 deletion src/lava/magma/runtime/runtime_services/channel_broker/channel_broker.py
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Expand Up @@ -147,7 +147,8 @@ def poll_c_inports(self):
channel_actions = []
for cport, channel in self.c_inports_to_poll.items():
result = (cport, channel)
channel_actions.append((cport.csp_ports[0], lambda: result))
channel_actions.append((cport.csp_ports[0],
(lambda y: (lambda: y))(result)))

channel_actions.append((self.mgmt_channel.dst_port,
lambda: ('stop', None)))
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