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# ❓ Questions and Help
Some features appear to be unavailable when executing 'python -m xformers.info' (cutlassF, smallkF, ...)
Is this normal?
```
xFormers 0.0.27+7a04357.d20240822
memory_ef…
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Hello, I have recently implemented a cross attention application with multi-modal fusion, but because the image resolution is too large, cuda OOM occurs when calculating q and k, so I found your paper…
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There's an error message at the KSamplerTheMisto node, and the workflow can't complete. My GPU is a 2080ti.
"NotImplementedError: No operator found for `memory_efficient_attention_forward` with inp…
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I am wondering what's the best way to use efficient implementations of attention. PyTorch provides the experimental [`torch.nn.functional.scaled_dot_product_attention`](https://pytorch.org/docs/stable…
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### Describe the bug
> RuntimeError: The size of tensor a (154) must match the size of tensor b (2304) at non-singleton dimension 1
### Reproduction
```python
# StableDiffusion3Pipeline
pipe.enab…
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Traceback (most recent call last):
File "/content/gdrive/MyDrive/sd/stable-diffusion-webui/modules/call_queue.py", line 45, in f
res = list(func(*args, **kwargs))
File "/content/gdrive/MyDr…
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# 🐛 Bug
XFormers can not perform memory_efficient_attention,
## Command
## To Reproduce
The code is from attention_processors line 266 (it can change but not too much) of the diffusers libra…
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I am installing xformers by the following steps:
```bash
git clone https://github.com/ROCm/xformers
cd xformers
git checkout develop
git submodule update --init --recursive
python setup.py ins…
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### 🚀 The feature, motivation and pitch
sparse.softmax apparently only supports sparse COO format, while sparse CSR is presented as more efficient and default format for other operations.
For examp…