Comments (6)
I'm having the same issue. would like to know the answer too
from deepspeed-mii.
I can confirm that I'm able to reproduce this on an A6000 as well. With MII: VRAM usage is ~18GB, with tranformers.pipeline
: VRAM usage is ~12GB.
The difference is unexpectedly large, and we are investigating the cause. I'll also note that this is not the case for all models. I just tested a few and many have the same memory usage.
from deepspeed-mii.
@marshmellow77 it appears that the OOM you are seeing when using MII is due to the need for extra VRAM when injecting kernels with DeepSpeed-Inference. This can be avoided by loading the model onto system memory rather than GPU memory before using DeepSpeed-Inference. #105 adds the option to allow users to do this if you could give it a try and let me know the results:
Install this version of MII
pip install git+https://github.com/microsoft/deepspeed-mii@mrwyattii/address-poor-vram-usage
and add the following to your mii_configs
: "load_with_sys_mem": True
from deepspeed-mii.
I can confirm that the mdeol now load into GPU. I can't test the text generation because of #102, but I believe this issue can be closed.
from deepspeed-mii.
@mrwyattii Can we not later release the extra gpu memory used when load_with_sys_mem is False?
For smaller models that would at least allow more free memory.
from deepspeed-mii.
@mrwyattii Can we not later release the extra gpu memory used when load_with_sys_mem is False? For smaller models that would at least allow more free memory.
DeepSpeed-inference will release the extra memory after kernel injection happens
from deepspeed-mii.
Related Issues (20)
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from deepspeed-mii.