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[BF16] Support ndarray.asnumpy() to bfloat16 tensor natively using ml_dtypes #17739

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Merged
merged 2 commits into from
Mar 12, 2025
Merged

[BF16] Support ndarray.asnumpy() to bfloat16 tensor natively using ml_dtypes #17739

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6ad7e11
Update ndarray.py
spectrometerHBH Mar 11, 2025
1223e29
Fix llvm codegen bfloat16 test
MasterJH5574 Mar 12, 2025
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7 changes: 6 additions & 1 deletion python/tvm/runtime/ndarray.py
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Original file line number Diff line number Diff line change
Expand Up @@ -233,7 +233,12 @@ def numpy(self):
if dtype == "int4":
dtype = "int8"
if dtype == "bfloat16":
dtype = "uint16"
if ml_dtypes is not None:
dtype = ml_dtypes.bfloat16
else:
raise RuntimeError(
"ml_dtypes is not installed, cannot convert bfloat16 array to numpy."
)
if dtype == "float8_e4m3fn":
if ml_dtypes is not None:
dtype = ml_dtypes.float8_e4m3fn
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