[GitHub] [incubator-tvm] comaniac commented on a change in pull request #6935: [AutoScheduler] Improve warning messages

[GitBox <gi...@apache.org>]

comaniac commented on a change in pull request #6935:
URL: https://github.com/apache/incubator-tvm/pull/6935#discussion_r525860346



##########
File path: python/tvm/relay/op/strategy/cuda.py
##########
@@ -101,6 +101,17 @@ def schedule_lrn_cuda(attrs, outs, target):
         return topi.cuda.schedule_lrn(outs)
 
 
+def naive_schedule(_, outs, target):
+    """Return the naive default schedule"""
+    if "gpu" in target.keys:
+        # For GPU, we at least need thread binding to make a valid schedule.
+        # So the naive schedule cannot be compiled.
+        raise RuntimeError(
+            "Cannot compile for GPU targets if no tuned schedule is found. Please see the warning messages above for more information about the failed workloads."
+        )
+    return tvm.te.create_schedule(outs[-1].op)

Review comment:
       Maybe we need to add a comment saying that it would be a problem for the DAG with multiple outputs.




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