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Enable XPU int matmul #1547

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Merged
merged 2 commits into from
Mar 13, 2025
Merged

Enable XPU int matmul #1547

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243f65d
Enable XPU int matmul
jiqing-feng Feb 28, 2025
cff808f
Merge branch 'multi-backend-refactor' into xpu
jiqing-feng Mar 13, 2025
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6 changes: 4 additions & 2 deletions bitsandbytes/backends/cpu_xpu_common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -194,8 +194,10 @@ def int8_linear_matmul_impl(

A_reshaped = A.reshape(m, k)

# torch._int_mm is available on CPU since torch 2.4
if _torch_version_prereq(2, 4) and A.device.type == "cpu":
# torch._int_mm is available on CPU since torch 2.4, XPU since torch 2.6
if (A.device.type == "cpu" and _torch_version_prereq(2, 4)) or (
A.device.type == "xpu" and _torch_version_prereq(2, 6)
):
C = torch._int_mm(A_reshaped, B.T).to(dtype)
else:
C = torch.matmul(A_reshaped.float(), B.t().float()).to(dtype)
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