Skip to content

Short-circuit index_put with a statically-empty index #4641

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
apbose wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Short-circuit index_put with a statically-empty index #4641

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 7 additions & 0 deletions py/torch_tensorrt/dynamo/conversion/impl/select.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -772,6 +772,13 @@ def index_put_converter(
else:
N = 1

if isinstance(N, int) and N == 0:
# Empty index -> no-op. Building the scatter path anyway trips a
# TensorRT squeezeDims assertion on DGX Spark (GB10, SM 12.1).
identity_layer = ctx.net.add_identity(input_tensor)
set_layer_name(identity_layer, target, f"{name}_empty_index_noop", source_ir)
return identity_layer.get_output(0)

# Compute shapes and volume for the free dimensions.
# F_shapes: static ints (-1 for dynamic dims), used where static ints are required.
# F_shape_values: per-free-dim size as int (static) or ITensor (dynamic).
Expand Down
Loading