tkonolige commented on a change in pull request #6854:
URL: https://github.com/apache/incubator-tvm/pull/6854#discussion_r518246012
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File path: python/tvm/relay/op/_tensor_grad.py
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@@ -803,3 +805,15 @@ def arange_grad(orig, grad):
grad_step = cast_like(_sum(grad_step), step)
return [grad_start, grad_stop, grad_step]
+
+
+@register_gradient("gather_nd")
+def gather_nd_grad(orig, grad):
+ data, indices = orig.args
+ return [scatter_nd(grad, indices, data.checked_type.concrete_shape),
zeros_like(indices)]
+
+
+# @register_gradient("scatter_nd")
Review comment:
I'm getting some really weird results when using gather_nd as the
gradient. Values are like 1e303.
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