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An attempt to add MPS device to torch backend #750

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merged 2 commits into from
Aug 19, 2023
Merged

An attempt to add MPS device to torch backend #750

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An attempt to add MPS device to torch backend
M7Saad Aug 18, 2023
91a217c
Update core.py
M7Saad Aug 19, 2023
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16 changes: 14 additions & 2 deletions keras_core/backend/torch/core.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import contextlib
import os

import numpy as np
import torch
Expand All @@ -12,7 +13,18 @@
from keras_core.utils.nest import pack_sequence_as

DYNAMIC_SHAPES_OK = True
DEFAULT_DEVICE = "cuda" if torch.cuda.is_available() else "cpu"
# Some operators such as 'aten::_foreach_mul_.Scalar'
# are not currently implemented for the MPS device.
# check https://github.com/pytorch/pytorch/issues/77764.
if (
torch.backends.mps.is_available()
and os.getenv("PYTORCH_ENABLE_MPS_FALLBACK") == "1"
):
DEFAULT_DEVICE = "mps"
elif torch.cuda.is_available():
DEFAULT_DEVICE = "cuda"
else:
DEFAULT_DEVICE = "cpu"

TORCH_DTYPES = {
"float16": torch.float16,
Expand Down Expand Up @@ -145,7 +157,7 @@ def transform(x):
if x.requires_grad:
x = x.detach()
# Tensor has to be moved to CPU before converting to numpy.
if x.is_cuda:
if x.is_cuda or x.is_mps:
x = x.cpu()
return np.array(x)

Expand Down