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Log how much time loading a compiled artifact takes #16848

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Merged
merged 1 commit into from
Apr 19, 2025
Merged

Log how much time loading a compiled artifact takes #16848

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12 changes: 8 additions & 4 deletions vllm/compilation/backends.py
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Original file line number Diff line number Diff line change
Expand Up @@ -110,10 +110,14 @@ def compile(self,
compiled_graph = self.load(graph, example_inputs, graph_index,
runtime_shape)
if compiled_graph is not None:
if graph_index == 0:
# adds some info logging for the first graph
logger.info("Directly load the compiled graph for shape %s "
"from the cache", str(runtime_shape)) # noqa
if graph_index == num_graphs - 1:
# after loading the last graph for this shape, record the time.
# there can be multiple graphs due to piecewise compilation.
now = time.time()
elapsed = now - compilation_start_time
logger.info(
"Directly load the compiled graph(s) for shape %s "
"from the cache, took %.3f s", str(runtime_shape), elapsed)
return compiled_graph

# no compiler cached the graph, or the cache is disabled,
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