sage-attention 3 mosaic artifacts and not faster than sage-attention 2.2 on dgx spark

[atipasvanund]

The first video is sage-attention 2.2

Video_00003-audio.mp4

The second video is sage-attention 3

Video_00004-audio.mp4

Both videos take about same time to generate, however sage-attention 3 produces mosaic artifacts, whereas sage-attention 2.2 is very clean.

I am using DGX Spark, Python 3.11, https://download.pytorch.org/whl/cu130 and

# sage-attention 2.2
python setup.py bdist_wheel

# sage-attention 3
(
cd sageattention3_blackwell
python setup.py bdist_wheel
)

# sage-attention 2.2
pip install ~/SageAttention/dist/sageattention-2.2.0-cp312-cp312-linux_aarch64.whl

# Sage-attention 3
pip install ~/SageAttention/sageattention3_blackwell/dist/sageattn3-1.0.0-cp312-cp312-linux_aarch64.whl