[Stacked PR 3/5] Add decoupled GDN Pallas backward pass kernel and parity tests

src/maxtext/models/kernels/gdn/__init__.py

@@ -0,0 +1,47 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
+"""Local GDN forward kernel package with triangular inverse matrix caching."""
+
+from . import compute_conv1d
+from . import compute_gdn
+from . import config
+from . import gdn_bwd_pallas
+from . import memory_ref
+from . import metadata
+from . import tiling
+from . import vmem_ldst
+from . import wrapper
+from .gdn_bwd_pallas import gdn_decoupled_conv1d
+from .gdn_bwd_pallas import pallas_gdn_bwd_kernel
+
+gdn_fused_conv1d = gdn_decoupled_conv1d
+gdn_kernel = gdn_decoupled_conv1d
+
+__all__ = [
+    "compute_conv1d",
+    "compute_gdn",
+    "config",
+    "gdn_bwd_pallas",
+    "gdn_decoupled_conv1d",
+    "gdn_fused_conv1d",
+    "gdn_kernel",
+    "memory_ref",
+    "metadata",
+    "pallas_gdn_bwd_kernel",
+    "tiling",
+    "vmem_ldst",
+    "wrapper",
+]