ComfyUI
ComfyUI copied to clipboard
Published
2 months ago
•
comfyanonymous
comfyanonymous
RTX 5090 Probleme using "ÉchantillonneurPersonnaliséAvancé"
Custom Node Testing
- [ ] I have tried disabling custom nodes and the issue persists (see how to disable custom nodes if you need help)
Expected Behavior
Help me fix this bug
Actual Behavior
i was using this but it bug at the very end of the workflow
Steps to Reproduce
[Flux]_LoRA-Person-Replace.json try to use this workflow with a 5090
Debug Logs
# ComfyUI Error Report
## Error Details
- **Node ID:** 88
- **Node Type:** SamplerCustomAdvanced
- **Exception Type:** NotImplementedError
- **Exception Message:** No operator found for `memory_efficient_attention_forward` with inputs:
query : shape=(1, 4006, 24, 128) (torch.float16)
key : shape=(1, 4006, 24, 128) (torch.float16)
value : shape=(1, 4006, 24, 128) (torch.float16)
attn_bias : <class 'NoneType'>
p : 0.0
`[email protected]` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new)
`[email protected]` is not supported because:
operator wasn't built - see `python -m xformers.info` for more info
`cutlassF-pt` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
## Stack Trace
.........................
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\model_base.py", line 203, in _apply_model
model_output = self.diffusion_model(xc, t, context=context, control=control, transformer_options=transformer_options, **extra_conds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1775, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1786, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 288, in forward
return comfy.patcher_extension.WrapperExecutor.new_class_executor(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 338, in _forward
out = self.forward_orig(img, img_ids, context, txt_ids, timestep, y, guidance, control, transformer_options, attn_mask=kwargs.get("attention_mask", None))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 199, in forward_orig
img, txt = block(img=img,
^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1775, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1786, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\layers.py", line 241, in forward
attn = attention(q, k, v,
^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\math.py", line 13, in attention
x = optimized_attention(q, k, v, heads, skip_reshape=True, mask=mask, transformer_options=transformer_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\modules\attention.py", line 130, in wrapper
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\modules\attention.py", line 458, in attention_xformers
out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=mask)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 311, in memory_efficient_attention
return _memory_efficient_attention(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 472, in _memory_efficient_attention
return _memory_efficient_attention_forward(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 491, in _memory_efficient_attention_forward
op = _dispatch_fw(inp, False)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\dispatch.py", line 142, in _dispatch_fw
return _run_priority_list(
^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\dispatch.py", line 83, in _run_priority_list
raise NotImplementedError(msg)
NotImplementedError: No operator found for `memory_efficient_attention_forward` with inputs:
query : shape=(1, 4006, 24, 128) (torch.float16)
key : shape=(1, 4006, 24, 128) (torch.float16)
value : shape=(1, 4006, 24, 128) (torch.float16)
attn_bias : <class 'NoneType'>
p : 0.0
`[email protected]` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new)
`[email protected]` is not supported because:
operator wasn't built - see `python -m xformers.info` for more info
`cutlassF-pt` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
2025-12-14T22:27:31.062386 - Prompt executed in 147.01 seconds
2025-12-14T22:36:43.134896 - got prompt
2025-12-14T22:36:43.141903 - Failed to validate prompt for output 104:
2025-12-14T22:36:43.142903 - * SamplerCustomAdvanced 88:
2025-12-14T22:36:43.142903 - - Required input is missing: sigmas
2025-12-14T22:36:43.142903 - Output will be ignored
2025-12-14T22:36:43.155554 - Prompt executed in 0.02 seconds
2025-12-14T22:36:58.361227 - got prompt
2025-12-14T22:36:58.404167 -
0%| | 0/15 [00:00<?, ?it/s]2025-12-14T22:36:58.404167 -
2025-12-14T22:36:58.409165 - !!! Exception during processing !!! No operator found for `memory_efficient_attention_forward` with inputs:
query : shape=(1, 4006, 24, 128) (torch.float16)
key : shape=(1, 4006, 24, 128) (torch.float16)
value : shape=(1, 4006, 24, 128) (torch.float16)
attn_bias : <class 'NoneType'>
p : 0.0
`[email protected]` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new)
`[email protected]` is not supported because:
operator wasn't built - see `python -m xformers.info` for more info
`cutlassF-pt` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
2025-12-14T22:36:58.412166 - Traceback (most recent call last):
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 510, in execute
output_data, output_ui, has_subgraph, has_pending_tasks = await get_output_data(prompt_id, unique_id, obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, hidden_inputs=hidden_inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 324, in get_output_data
return_values = await _async_map_node_over_list(prompt_id, unique_id, obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, hidden_inputs=hidden_inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 298, in _async_map_node_over_list
await process_inputs(input_dict, i)
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 286, in process_inputs
result = f(**inputs)
^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy_api\internal\__init__.py", line 149, in wrapped_func
return method(locked_class, **inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy_api\latest\_io.py", line 1275, in EXECUTE_NORMALIZED
to_return = cls.execute(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy_extras\nodes_custom_sampler.py", line 911, in execute
samples = guider.sample(noise.generate_noise(latent), latent_image, sampler, sigmas, denoise_mask=noise_mask, callback=callback, disable_pbar=disable_pbar, seed=noise.seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 1035, in sample
output = executor.execute(noise, latent_image, sampler, sigmas, denoise_mask, callback, disable_pbar, seed, latent_shapes=latent_shapes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 997, in outer_sample
output = self.inner_sample(noise, latent_image, device, sampler, sigmas, denoise_mask, callback, disable_pbar, seed, latent_shapes=latent_shapes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 980, in inner_sample
samples = executor.execute(self, sigmas, extra_args, callback, noise, latent_image, denoise_mask, disable_pbar)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\custom_nodes\ComfyUI_smZNodes\smZNodes.py", line 114, in KSAMPLER_sample
return orig_fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 752, in sample
samples = self.sampler_function(model_k, noise, sigmas, extra_args=extra_args, callback=k_callback, disable=disable_pbar, **self.extra_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\utils\_contextlib.py", line 120, in decorate_context
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\k_diffusion\sampling.py", line 199, in sample_euler
denoised = model(x, sigma_hat * s_in, **extra_args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 401, in __call__
out = self.inner_model(x, sigma, model_options=model_options, seed=seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 953, in __call__
return self.outer_predict_noise(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 960, in outer_predict_noise
).execute(x, timestep, model_options, seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 963, in predict_noise
return sampling_function(self.inner_model, x, timestep, self.conds.get("negative", None), self.conds.get("positive", None), self.cfg, model_options=model_options, seed=seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\custom_nodes\ComfyUI_smZNodes\smZNodes.py", line 189, in sampling_function
out = orig_fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 381, in sampling_function
out = calc_cond_batch(model, conds, x, timestep, model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 206, in calc_cond_batch
return _calc_cond_batch_outer(model, conds, x_in, timestep, model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 214, in _calc_cond_batch_outer
return executor.execute(model, conds, x_in, timestep, model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 326, in _calc_cond_batch
output = model.apply_model(input_x, timestep_, **c).chunk(batch_chunks)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\model_base.py", line 161, in apply_model
return comfy.patcher_extension.WrapperExecutor.new_class_executor(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\model_base.py", line 203, in _apply_model
model_output = self.diffusion_model(xc, t, context=context, control=control, transformer_options=transformer_options, **extra_conds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1775, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1786, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 288, in forward
return comfy.patcher_extension.WrapperExecutor.new_class_executor(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 338, in _forward
out = self.forward_orig(img, img_ids, context, txt_ids, timestep, y, guidance, control, transformer_options, attn_mask=kwargs.get("attention_mask", None))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 199, in forward_orig
img, txt = block(img=img,
^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1775, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1786, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\layers.py", line 241, in forward
attn = attention(q, k, v,
^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\math.py", line 13, in attention
x = optimized_attention(q, k, v, heads, skip_reshape=True, mask=mask, transformer_options=transformer_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\modules\attention.py", line 130, in wrapper
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\modules\attention.py", line 458, in attention_xformers
out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=mask)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 311, in memory_efficient_attention
return _memory_efficient_attention(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 472, in _memory_efficient_attention
return _memory_efficient_attention_forward(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 491, in _memory_efficient_attention_forward
op = _dispatch_fw(inp, False)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\dispatch.py", line 142, in _dispatch_fw
return _run_priority_list(
^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\dispatch.py", line 83, in _run_priority_list
raise NotImplementedError(msg)
NotImplementedError: No operator found for `memory_efficient_attention_forward` with inputs:
query : shape=(1, 4006, 24, 128) (torch.float16)
key : shape=(1, 4006, 24, 128) (torch.float16)
value : shape=(1, 4006, 24, 128) (torch.float16)
attn_bias : <class 'NoneType'>
p : 0.0
`[email protected]` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new)
`[email protected]` is not supported because:
operator wasn't built - see `python -m xformers.info` for more info
`cutlassF-pt` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
2025-12-14T22:36:58.418063 - Prompt executed in 0.05 seconds
2025-12-14T22:38:45.690221 - got prompt
2025-12-14T22:38:45.734495 -
0%| | 0/15 [00:00<?, ?it/s]2025-12-14T22:38:45.734495 -
2025-12-14T22:38:45.736503 - !!! Exception during processing !!! No operator found for `memory_efficient_attention_forward` with inputs:
query : shape=(1, 4006, 24, 128) (torch.float16)
key : shape=(1, 4006, 24, 128) (torch.float16)
value : shape=(1, 4006, 24, 128) (torch.float16)
attn_bias : <class 'NoneType'>
p : 0.0
`[email protected]` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new)
`[email protected]` is not supported because:
operator wasn't built - see `python -m xformers.info` for more info
`cutlassF-pt` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
2025-12-14T22:38:45.738495 - Traceback (most recent call last):
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 510, in execute
output_data, output_ui, has_subgraph, has_pending_tasks = await get_output_data(prompt_id, unique_id, obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, hidden_inputs=hidden_inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 324, in get_output_data
return_values = await _async_map_node_over_list(prompt_id, unique_id, obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, hidden_inputs=hidden_inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 298, in _async_map_node_over_list
await process_inputs(input_dict, i)
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\execution.py", line 286, in process_inputs
result = f(**inputs)
^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy_api\internal\__init__.py", line 149, in wrapped_func
return method(locked_class, **inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy_api\latest\_io.py", line 1275, in EXECUTE_NORMALIZED
to_return = cls.execute(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy_extras\nodes_custom_sampler.py", line 911, in execute
samples = guider.sample(noise.generate_noise(latent), latent_image, sampler, sigmas, denoise_mask=noise_mask, callback=callback, disable_pbar=disable_pbar, seed=noise.seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 1035, in sample
output = executor.execute(noise, latent_image, sampler, sigmas, denoise_mask, callback, disable_pbar, seed, latent_shapes=latent_shapes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 997, in outer_sample
output = self.inner_sample(noise, latent_image, device, sampler, sigmas, denoise_mask, callback, disable_pbar, seed, latent_shapes=latent_shapes)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 980, in inner_sample
samples = executor.execute(self, sigmas, extra_args, callback, noise, latent_image, denoise_mask, disable_pbar)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\custom_nodes\ComfyUI_smZNodes\smZNodes.py", line 114, in KSAMPLER_sample
return orig_fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 752, in sample
samples = self.sampler_function(model_k, noise, sigmas, extra_args=extra_args, callback=k_callback, disable=disable_pbar, **self.extra_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\utils\_contextlib.py", line 120, in decorate_context
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\k_diffusion\sampling.py", line 199, in sample_euler
denoised = model(x, sigma_hat * s_in, **extra_args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 401, in __call__
out = self.inner_model(x, sigma, model_options=model_options, seed=seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 953, in __call__
return self.outer_predict_noise(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 960, in outer_predict_noise
).execute(x, timestep, model_options, seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 963, in predict_noise
return sampling_function(self.inner_model, x, timestep, self.conds.get("negative", None), self.conds.get("positive", None), self.cfg, model_options=model_options, seed=seed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\custom_nodes\ComfyUI_smZNodes\smZNodes.py", line 189, in sampling_function
out = orig_fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 381, in sampling_function
out = calc_cond_batch(model, conds, x, timestep, model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 206, in calc_cond_batch
return _calc_cond_batch_outer(model, conds, x_in, timestep, model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 214, in _calc_cond_batch_outer
return executor.execute(model, conds, x_in, timestep, model_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\samplers.py", line 326, in _calc_cond_batch
output = model.apply_model(input_x, timestep_, **c).chunk(batch_chunks)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\model_base.py", line 161, in apply_model
return comfy.patcher_extension.WrapperExecutor.new_class_executor(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\model_base.py", line 203, in _apply_model
model_output = self.diffusion_model(xc, t, context=context, control=control, transformer_options=transformer_options, **extra_conds)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1775, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1786, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 288, in forward
return comfy.patcher_extension.WrapperExecutor.new_class_executor(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\patcher_extension.py", line 112, in execute
return self.original(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 338, in _forward
out = self.forward_orig(img, img_ids, context, txt_ids, timestep, y, guidance, control, transformer_options, attn_mask=kwargs.get("attention_mask", None))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\model.py", line 199, in forward_orig
img, txt = block(img=img,
^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1775, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\torch\nn\modules\module.py", line 1786, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\layers.py", line 241, in forward
attn = attention(q, k, v,
^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\flux\math.py", line 13, in attention
x = optimized_attention(q, k, v, heads, skip_reshape=True, mask=mask, transformer_options=transformer_options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\modules\attention.py", line 130, in wrapper
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\ComfyUI\comfy\ldm\modules\attention.py", line 458, in attention_xformers
out = xformers.ops.memory_efficient_attention(q, k, v, attn_bias=mask)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 311, in memory_efficient_attention
return _memory_efficient_attention(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 472, in _memory_efficient_attention
return _memory_efficient_attention_forward(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\__init__.py", line 491, in _memory_efficient_attention_forward
op = _dispatch_fw(inp, False)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\dispatch.py", line 142, in _dispatch_fw
return _run_priority_list(
^^^^^^^^^^^^^^^^^^^
File "C:\Users\david\Downloads\ComfyUI_Windows_portable_cu128\ComfyUI_Windows_portable\python_standalone\Lib\site-packages\xformers\ops\fmha\dispatch.py", line 83, in _run_priority_list
raise NotImplementedError(msg)
NotImplementedError: No operator found for `memory_efficient_attention_forward` with inputs:
query : shape=(1, 4006, 24, 128) (torch.float16)
key : shape=(1, 4006, 24, 128) (torch.float16)
value : shape=(1, 4006, 24, 128) (torch.float16)
attn_bias : <class 'NoneType'>
p : 0.0
`[email protected]` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new)
`[email protected]` is not supported because:
operator wasn't built - see `python -m xformers.info` for more info
`cutlassF-pt` is not supported because:
requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new)
2025-12-14T22:38:45.741495 - Prompt executed in 0.04 seconds
## Attached Workflow
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No response
i have tried this workflow and it works fine on my 5090, the only difference being i am using sageattention2 not xformers.
Looking at your xformers errors I remember getting that if I use --force-fp32 when I start ComfyUI. Did you use that?
how to use sageattention2 ?
By installing Sageattention 2.2 (https://github.com/woct0rdho/SageAttention.git) and then using --use-sage-attention when you start ComfyUI. But it would not solve your xformers errors if you continue to use --force-fp32, if it is indeed what caused your issue in the first place.
