298977887/ComfyUI
1
0
Fork 0
mirror of https://github.com/comfyanonymous/ComfyUI.git synced 2025-03-15 05:57:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

Auto enable mem efficient attention on gfx1100 on pytorch nightly 2.7

Browse Source 
I'm not not sure which arches are supported yet. If you see improvements in
memory usage while using --use-pytorch-cross-attention on your AMD GPU let
me know and I will add it to the list.
This commit is contained in:
comfyanonymous 2025-02-14 04:17:56 -05:00
parent 042a905c37
commit d7b4bf21a2
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
comfy/model_management.py
View File

@ -236,6 +236,19 @@ try:
except:
pass
try:
if is_amd():
arch = torch.cuda.get_device_properties(get_torch_device()).gcnArchName
logging.info("AMD arch: {}".format(arch))
if args.use_split_cross_attention == False and args.use_quad_cross_attention == False:
if int(torch_version[0]) >= 2 and int(torch_version[2]) >= 7: # works on 2.6 but doesn't actually seem to improve much
if arch in ["gfx1100"]: #TODO: more arches
ENABLE_PYTORCH_ATTENTION = True
except:
pass
if ENABLE_PYTORCH_ATTENTION:
torch.backends.cuda.enable_math_sdp(True)
torch.backends.cuda.enable_flash_sdp(True)