Repository: stable-diffusion-webui
Issue: [Bug]: Unet is using fp32 instead of fp16 even when no-half was not enabled
Labels: bug-report

### Is there an existing issue for this?

- [X] I have searched the existing issues and checked the recent builds/commits

### What happened?

I take a look at the device info in System Info extension, and i saw that the unet is using fp32 but not fp16, but it was launched without no-half, im sure that my model is saved with fp16
![image](https://github.com/AUTOMATIC1111/stable-diffusion-webui/assets/65208589/1438de6d-121e-4691-a27f-f4c13446971f)
![image](https://github.com/AUTOMATIC1111/stable-diffusion-webui/assets/65208589/f66adc39-b36c-4632-8a1f-f24632fc455e)


### Steps to reproduce the problem

N/A

### What should have happened?

the unet should be using fp16

### Version or Commit where the problem happens

Version: v1.5.1

### What Python version are you running on ?

Python 3.10.x

### What platforms do you use to access the UI ?

Windows

### What device are you running WebUI on?

Nvidia GPUs (RTX 20 above)

### Cross attention optimization

sdp-no-mem

### What browsers do you use to access the UI ?

Microsoft Edge

### Command Line Arguments

```Shell
--medvram --opt-sdp-no-mem-attention
```


### List of extensions

<html>
<body>
<!--StartFragment-->

Extension | URL | Branch | Version | Date | Update
-- | -- | -- | -- | -- | --
a1111-sd-webui-lycoris | https://github.com/KohakuBlueleaf/a1111-sd-webui-lycoris.git | main | 8e97bf54 | Sun Jul 9 07:44:58 2023 | unknown
a1111-sd-webui-tagcomplete | https://github.com/DominikDoom/a1111-sd-webui-tagcomplete | main | 638c073f | Wed Jul 26 13:05:37 2023 | unknown
adetailer | https://github.com/Bing-su/adetailer.git | main | a71f0e2b | Mon Jul 24 09:34:22 2023 | unknown
openpose-editor | https://github.com/fkunn1326/openpose-editor.git | master | 722bca6f | Sat Jun 3 04:54:52 2023 | unknown
sd-dynamic-prompts | https://github.com/adieyal/sd-dynamic-prompts.git | main | 26ce66bb | Tue Jul 18 17:52:11 2023 | unknown
sd-dynamic-thresholding | https://github.com/mcmonkeyprojects/sd-dynamic-thresholding.git | master | 27700fdd | Mon Jul 17 02:11:02 2023 | unknown
sd-extension-system-info | https://github.com/vladmandic/sd-extension-system-info.git | main | 9d3c0ca0 | Fri Jul 14 19:46:48 2023 | unknown
sd-webui-controlnet | https://github.com/Mikubill/sd-webui-controlnet.git | main | efda6ddf | Wed Jul 26 15:59:47 2023 | unknown
sd-webui-openpose-editor | https://github.com/huchenlei/sd-webui-openpose-editor.git | main | d352f29e | Sat Jul 22 21:15:12 2023 | unknown
sd-webui-regional-prompter | https://github.com/hako-mikan/sd-webui-regional-prompter.git | main | 39ced8be | Wed Jul 26 13:20:23 2023 | unknown
sd-webui-supermerger | https://github.com/hako-mikan/sd-webui-supermerger.git | main | 665878f6 | Tue Jul 25 13:14:14 2023 | unknown
ultimate-upscale-for-automatic1111 | https://github.com/Coyote-A/ultimate-upscale-for-automatic1111.git | master | c99f382b | Tue Jun 13 04:29:35 2023 | unknown
LDSR | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
Lora | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
ScuNET | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
SwinIR | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
canvas-zoom-and-pan | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
extra-options-section | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
mobile | built-in | None |   | Fri Jul 28 10:21:56 2023 |  
prompt-bracket-checker | built-in | None |   | Fri Jul 28 10:21:56 2023 |  

<!--EndFragment-->
</body>
</html>

### Console logs

```Shell
venv "C:\SD-Webui\venv\Scripts\Python.exe"
Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
Version: v1.5.1
Commit hash: 68f336bd994bed5442ad95bad6b6ad5564a5409a





Launching Web UI with arguments: --medvram --opt-sdp-no-mem-attention --disable-console-progressbars
No module 'xformers'. Proceeding without it.
Tag Autocomplete: Could not locate model-keyword extension, Lora trigger word completion will be limited to those added through the extra networks menu.
[-] ADetailer initialized. version: 23.7.9, num models: 9
2023-07-28 18:20:54,678 - ControlNet - INFO - ControlNet v1.1.233
ControlNet preprocessor location: C:\SD-Webui\extensions\sd-webui-controlnet\annotator\downloads
2023-07-28 18:20:54,831 - ControlNet - INFO - ControlNet v1.1.233
Loading weights [fe90386d2a] from C:\SD-Webui\models\Stable-diffusion\testmix.fp16.safetensors
Creating model from config: C:\SD-Webui\configs\v1-inference.yaml
LatentDiffusion: Running in eps-prediction mode
Running on local URL:  http://127.0.0.1:7861

To create a public link, set `share=True` in `launch()`.
Startup time: 15.8s (launcher: 3.5s, import torch: 3.2s, import gradio: 1.2s, setup paths: 1.0s, other imports: 0.9s, list SD models: 0.2s, load scripts: 4.2s, create ui: 1.1s, gradio launch: 0.3s).
DiffusionWrapper has 859.52 M params.
Loading VAE weights specified in settings: C:\SD-Webui\models\VAE\kl-f8-anime2.ckpt
Applying attention optimization: sdp-no-mem... done.
Model loaded in 4.4s (load weights from disk: 1.0s, create model: 0.8s, apply weights to model: 0.9s, apply half(): 0.4s, load VAE: 0.4s, calculate empty prompt: 0.8s).
```


### Additional information

_No response_