KSampler : Current platform can NOT allocate memory block (with Intel A770)

[cedico]

Hi,
I'm trying to use ComfyUI in Windows with GPU Intel Arc A770 (IPEX) and the lmage generation works fine.

But when I try to make some more complex things (like using KSampler (Efficient) I obtain this Error :

KSampler (Efficient) : Current platform can NOT allocate memory block with size larger than 4GB! Tried to allocate 8.00 GiB (GPU 0; 15.56 GiB total capacity; 2.93 GiB already allocated; 4.49 GiB reserved in total by PyTorch)

What can I do to bypass this please?

[ltdrdata]

I am not sure this will work. But you can try --lowvram cli option.

[cedico]

I'd tried :

python main.py --bf16-unet --lowvram

but I have the same error