Fix ONNX checkpoint loading (#2544)

* Revert "Disable ONNX tests (#2509)"

This reverts commit a0549fea.

* add external weights

* + pb

* style

.github/workflows/pr_tests.yml

@@ -31,6 +31,11 @@ jobs:
             runner: docker-cpu
             image: diffusers/diffusers-flax-cpu
             report: flax_cpu
+          - name: Fast ONNXRuntime CPU tests on Ubuntu
+            framework: onnxruntime
+            runner: docker-cpu
+            image: diffusers/diffusers-onnxruntime-cpu
+            report: onnx_cpu
           - name: PyTorch Example CPU tests on Ubuntu
             framework: pytorch_examples
             runner: docker-cpu

.github/workflows/push_tests.yml

@@ -29,6 +29,11 @@ jobs:
             runner: docker-tpu
             image: diffusers/diffusers-flax-tpu
             report: flax_tpu
+          - name: Slow ONNXRuntime CUDA tests on Ubuntu
+            framework: onnxruntime
+            runner: docker-gpu
+            image: diffusers/diffusers-onnxruntime-cuda
+            report: onnx_cuda
 
     name: ${{ matrix.config.name }}
 

.github/workflows/push_tests_fast.yml

@@ -29,6 +29,11 @@ jobs:
             runner: docker-cpu
             image: diffusers/diffusers-flax-cpu
             report: flax_cpu
+          - name: Fast ONNXRuntime CPU tests on Ubuntu
+            framework: onnxruntime
+            runner: docker-cpu
+            image: diffusers/diffusers-onnxruntime-cpu
+            report: onnx_cpu
           - name: PyTorch Example CPU tests on Ubuntu
             framework: pytorch_examples
             runner: docker-cpu

src/diffusers/pipelines/pipeline_utils.py

@@ -63,7 +63,7 @@ if is_transformers_available():
     from transformers.utils import SAFE_WEIGHTS_NAME as TRANSFORMERS_SAFE_WEIGHTS_NAME
     from transformers.utils import WEIGHTS_NAME as TRANSFORMERS_WEIGHTS_NAME
 
-from ..utils import FLAX_WEIGHTS_NAME, ONNX_WEIGHTS_NAME
+from ..utils import FLAX_WEIGHTS_NAME, ONNX_EXTERNAL_WEIGHTS_NAME, ONNX_WEIGHTS_NAME
 
 
 INDEX_FILE = "diffusion_pytorch_model.bin"
@@ -176,7 +176,13 @@ def is_safetensors_compatible(filenames, variant=None) -> bool:
 
 def variant_compatible_siblings(info, variant=None) -> Union[List[os.PathLike], str]:
     filenames = set(sibling.rfilename for sibling in info.siblings)
-    weight_names = [WEIGHTS_NAME, SAFETENSORS_WEIGHTS_NAME, FLAX_WEIGHTS_NAME, ONNX_WEIGHTS_NAME]
+    weight_names = [
+        WEIGHTS_NAME,
+        SAFETENSORS_WEIGHTS_NAME,
+        FLAX_WEIGHTS_NAME,
+        ONNX_WEIGHTS_NAME,
+        ONNX_EXTERNAL_WEIGHTS_NAME,
+    ]
 
     if is_transformers_available():
         weight_names += [TRANSFORMERS_WEIGHTS_NAME, TRANSFORMERS_SAFE_WEIGHTS_NAME, TRANSFORMERS_FLAX_WEIGHTS_NAME]
@@ -604,7 +610,7 @@ class DiffusionPipeline(ConfigMixin):
                 ]
 
                 if from_flax:
-                    ignore_patterns = ["*.bin", "*.safetensors", ".onnx"]
+                    ignore_patterns = ["*.bin", "*.safetensors", "*.onnx", "*.pb"]
                 elif is_safetensors_available() and is_safetensors_compatible(model_filenames, variant=variant):
                     ignore_patterns = ["*.bin", "*.msgpack"]