XlabsSampler. Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype

[Djon253]

I have a MacBook PRO M2 Max Silicon 64gb. I installed ComfyUI and then Flux. However, when I run the model I get this error. I am a beginner. I see that many people have this problem. Please help me to solve it.

ComfyUI Error Report

Error Details

• Node Type: XlabsSampler
• Exception Type: TypeError
• Exception Message: Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.

Stack Trace

  File "/Users/osborn/ComfyUI/execution.py", line 323, in execute
    output_data, output_ui, has_subgraph = get_output_data(obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)

  File "/Users/osborn/ComfyUI/execution.py", line 198, in get_output_data
    return_values = _map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)

  File "/Users/osborn/ComfyUI/execution.py", line 169, in _map_node_over_list
    process_inputs(input_dict, i)

  File "/Users/osborn/ComfyUI/execution.py", line 158, in process_inputs
    results.append(getattr(obj, func)(**inputs))

  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/nodes.py", line 354, in sampling
    x = denoise(

  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/sampling.py", line 193, in denoise
    pred = model_forward(

  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/sampling.py", line 28, in model_forward
    img = model.img_in(img)

  File "/Users/osborn/miniconda3/envs/comfyui_1/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1532, in _wrapped_call_impl
    return self._call_impl(*args, **kwargs)

  File "/Users/osborn/miniconda3/envs/comfyui_1/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1541, in _call_impl
    return forward_call(*args, **kwargs)

  File "/Users/osborn/ComfyUI/comfy/ops.py", line 68, in forward
    return self.forward_comfy_cast_weights(*args, **kwargs)

  File "/Users/osborn/ComfyUI/comfy/ops.py", line 63, in forward_comfy_cast_weights
    weight, bias = cast_bias_weight(self, input)

  File "/Users/osborn/ComfyUI/comfy/ops.py", line 42, in cast_bias_weight
    bias = comfy.model_management.cast_to(s.bias, bias_dtype, device, non_blocking=non_blocking, copy=has_function)

  File "/Users/osborn/ComfyUI/comfy/model_management.py", line 851, in cast_to
    return weight.to(dtype=dtype, copy=copy)

System Information

• ComfyUI Version: v0.2.7-6-g2865f91
• Arguments: main.py
• OS: posix
• Python Version: 3.10.15 (main, Oct 3 2024, 02:24:49) [Clang 14.0.6 ]
• Embedded Python: false
• PyTorch Version: 2.3.1

Devices

• Name: mps
  • Type: mps
  • VRAM Total: 68719476736
  • VRAM Free: 24615649280
  • Torch VRAM Total: 68719476736
  • Torch VRAM Free: 24615649280

Logs

2024-11-08 17:43:36,324 - root - INFO - Total VRAM 65536 MB, total RAM 65536 MB
2024-11-08 17:43:36,324 - root - INFO - pytorch version: 2.3.1
2024-11-08 17:43:36,324 - root - INFO - Set vram state to: SHARED
2024-11-08 17:43:36,324 - root - INFO - Device: mps
2024-11-08 17:43:36,860 - root - INFO - Using sub quadratic optimization for cross attention, if you have memory or speed issues try using: --use-split-cross-attention
2024-11-08 17:43:37,466 - root - INFO - [Prompt Server] web root: /Users/osborn/ComfyUI/web
2024-11-08 17:43:46,618 - root - INFO - --------------
2024-11-08 17:43:46,618 - root - INFO - �[91m ### Mixlab Nodes: �[93mLoaded
2024-11-08 17:43:46,623 - root - INFO - ChatGPT.available True
2024-11-08 17:43:46,624 - root - INFO - edit_mask.available True
2024-11-08 17:43:46,834 - root - INFO - ClipInterrogator.available True
2024-11-08 17:43:46,930 - root - INFO - PromptGenerate.available True
2024-11-08 17:43:46,930 - root - INFO - ChinesePrompt.available True
2024-11-08 17:43:46,930 - root - INFO - RembgNode_.available False
2024-11-08 17:43:47,176 - root - INFO - TripoSR.available
2024-11-08 17:43:47,176 - root - INFO - MiniCPMNode.available
2024-11-08 17:43:47,195 - root - INFO - Scenedetect.available
2024-11-08 17:43:47,196 - root - INFO - FishSpeech.available False
2024-11-08 17:43:47,202 - root - INFO - SenseVoice.available
2024-11-08 17:43:47,215 - root - INFO - Whisper.available False
2024-11-08 17:43:47,219 - root - INFO - FalVideo.available
2024-11-08 17:43:47,219 - root - INFO - �[93m -------------- �[0m
2024-11-08 17:43:49,953 - root - INFO - 
Import times for custom nodes:
2024-11-08 17:43:49,953 - root - INFO -    0.0 seconds: /Users/osborn/ComfyUI/custom_nodes/websocket_image_save.py
2024-11-08 17:43:49,953 - root - INFO -    0.0 seconds: /Users/osborn/ComfyUI/custom_nodes/ComfyUI_UltimateSDUpscale
2024-11-08 17:43:49,953 - root - INFO -    0.0 seconds: /Users/osborn/ComfyUI/custom_nodes/rgthree-comfy
2024-11-08 17:43:49,953 - root - INFO -    0.0 seconds: /Users/osborn/ComfyUI/custom_nodes/ComfyUI-GGUF
2024-11-08 17:43:49,953 - root - INFO -    0.0 seconds: /Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui
2024-11-08 17:43:49,953 - root - INFO -    0.1 seconds: /Users/osborn/ComfyUI/custom_nodes/ComfyUI-Manager
2024-11-08 17:43:49,953 - root - INFO -    2.7 seconds: /Users/osborn/ComfyUI/custom_nodes/ComfyUI-PuLID-Flux
2024-11-08 17:43:49,953 - root - INFO -    9.5 seconds: /Users/osborn/ComfyUI/custom_nodes/comfyui-mixlab-nodes
2024-11-08 17:43:49,953 - root - INFO - 
2024-11-08 17:43:49,958 - root - INFO - Starting server

2024-11-08 17:43:49,958 - root - INFO - To see the GUI go to: http://127.0.0.1:8188
2024-11-08 17:44:20,104 - root - INFO - got prompt
2024-11-08 17:44:20,139 - root - INFO - Using split attention in VAE
2024-11-08 17:44:20,140 - root - INFO - Using split attention in VAE
2024-11-08 17:44:20,382 - root - INFO - Requested to load FluxClipModel_
2024-11-08 17:44:20,382 - root - INFO - Loading 1 new model
2024-11-08 17:44:20,387 - root - INFO - loaded completely 0.0 4777.53759765625 True
2024-11-08 17:44:20,473 - root - WARNING - clip missing: ['text_projection.weight']
2024-11-08 17:44:28,011 - root - INFO - model weight dtype torch.float8_e4m3fn, manual cast: torch.bfloat16
2024-11-08 17:44:28,011 - root - INFO - model_type FLUX
2024-11-08 17:45:22,170 - root - INFO - Requested to load Flux
2024-11-08 17:45:22,170 - root - INFO - Loading 1 new model
2024-11-08 17:45:22,185 - root - INFO - loaded completely 0.0 11350.048889160156 True
2024-11-08 17:45:22,379 - root - ERROR - !!! Exception during processing !!! Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.
2024-11-08 17:45:22,383 - root - ERROR - Traceback (most recent call last):
  File "/Users/osborn/ComfyUI/execution.py", line 323, in execute
    output_data, output_ui, has_subgraph = get_output_data(obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
  File "/Users/osborn/ComfyUI/execution.py", line 198, in get_output_data
    return_values = _map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
  File "/Users/osborn/ComfyUI/execution.py", line 169, in _map_node_over_list
    process_inputs(input_dict, i)
  File "/Users/osborn/ComfyUI/execution.py", line 158, in process_inputs
    results.append(getattr(obj, func)(**inputs))
  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/nodes.py", line 354, in sampling
    x = denoise(
  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/sampling.py", line 193, in denoise
    pred = model_forward(
  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/sampling.py", line 28, in model_forward
    img = model.img_in(img)
  File "/Users/osborn/miniconda3/envs/comfyui_1/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1532, in _wrapped_call_impl
    return self._call_impl(*args, **kwargs)
  File "/Users/osborn/miniconda3/envs/comfyui_1/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1541, in _call_impl
    return forward_call(*args, **kwargs)
  File "/Users/osborn/ComfyUI/comfy/ops.py", line 68, in forward
    return self.forward_comfy_cast_weights(*args, **kwargs)
  File "/Users/osborn/ComfyUI/comfy/ops.py", line 63, in forward_comfy_cast_weights
    weight, bias = cast_bias_weight(self, input)
  File "/Users/osborn/ComfyUI/comfy/ops.py", line 42, in cast_bias_weight
    bias = comfy.model_management.cast_to(s.bias, bias_dtype, device, non_blocking=non_blocking, copy=has_function)
  File "/Users/osborn/ComfyUI/comfy/model_management.py", line 851, in cast_to
    return weight.to(dtype=dtype, copy=copy)
TypeError: Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.

2024-11-08 17:45:22,383 - root - INFO - Prompt executed in 62.28 seconds
2024-11-08 17:51:44,705 - root - INFO - got prompt
2024-11-08 17:51:44,811 - root - ERROR - !!! Exception during processing !!! Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.
2024-11-08 17:51:44,812 - root - ERROR - Traceback (most recent call last):
  File "/Users/osborn/ComfyUI/execution.py", line 323, in execute
    output_data, output_ui, has_subgraph = get_output_data(obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
  File "/Users/osborn/ComfyUI/execution.py", line 198, in get_output_data
    return_values = _map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb)
  File "/Users/osborn/ComfyUI/execution.py", line 169, in _map_node_over_list
    process_inputs(input_dict, i)
  File "/Users/osborn/ComfyUI/execution.py", line 158, in process_inputs
    results.append(getattr(obj, func)(**inputs))
  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/nodes.py", line 354, in sampling
    x = denoise(
  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/sampling.py", line 193, in denoise
    pred = model_forward(
  File "/Users/osborn/ComfyUI/custom_nodes/x-flux-comfyui/sampling.py", line 28, in model_forward
    img = model.img_in(img)
  File "/Users/osborn/miniconda3/envs/comfyui_1/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1532, in _wrapped_call_impl
    return self._call_impl(*args, **kwargs)
  File "/Users/osborn/miniconda3/envs/comfyui_1/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1541, in _call_impl
    return forward_call(*args, **kwargs)
  File "/Users/osborn/ComfyUI/comfy/ops.py", line 68, in forward
    return self.forward_comfy_cast_weights(*args, **kwargs)
  File "/Users/osborn/ComfyUI/comfy/ops.py", line 63, in forward_comfy_cast_weights
    weight, bias = cast_bias_weight(self, input)
  File "/Users/osborn/ComfyUI/comfy/ops.py", line 42, in cast_bias_weight
    bias = comfy.model_management.cast_to(s.bias, bias_dtype, device, non_blocking=non_blocking, copy=has_function)
  File "/Users/osborn/ComfyUI/comfy/model_management.py", line 851, in cast_to
    return weight.to(dtype=dtype, copy=copy)
TypeError: Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype.

2024-11-08 17:51:44,812 - root - INFO - Prompt executed in 0.10 seconds

Attached Workflow

Please make sure that workflow does not contain any sensitive information such as API keys or passwords.

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Additional Context

(Please add any additional context or steps to reproduce the error here)