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fix: BF16 conversion for LTX video models #1615

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fix: BF16 conversion for LTX video models #1615

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18 changes: 17 additions & 1 deletion optimum/exporters/openvino/convert.py
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Original file line number Diff line number Diff line change
Expand Up @@ -128,7 +128,23 @@ def _save_model(
library_name: Optional[str] = None,
config: "OnnxConfig" = None,
):
compress_to_fp16 = ov_config is not None and ov_config.dtype == "fp16"
compress_to_fp16 = False

if ov_config is not None:
if ov_config.dtype == "fp16":
compress_to_fp16 = True
elif ov_config.dtype == "bf16":
model.set_rt_info("bf16", ["runtime_options", "INFERENCE_PRECISION_HINT"])

from openvino.runtime.passes import Manager, ConvertPrecision
from openvino.runtime import Type

manager = Manager()
manager.register_pass(
ConvertPrecision(Type.f32, Type.bf16)
)
manager.run_passes(model)

model = _add_version_info_to_model(model, library_name)

runtime_options = config.runtime_options if hasattr(config, "runtime_options") else {}
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2 changes: 2 additions & 0 deletions optimum/exporters/openvino/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -406,6 +406,8 @@ def deduce_diffusers_dtype(model_name_or_path, **loading_kwargs):
else:
# filter out variant files
safetensors_files = [filename for filename in directory.glob(pattern) if len(filename.suffixes) == 1]
if not safetensors_files:
safetensors_files = list(directory.glob(pattern))
safetensors_file = None
if len(safetensors_files) > 0:
safetensors_file = safetensors_files.pop(0)
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