[JAX] Remove import jax.extend.ffi (#2193)

* remove import jax.extend.ffi
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

---------
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

transformer_engine/jax/cpp_extensions/activation.py

@@ -5,11 +5,10 @@
 from typing import Sequence, Union, Callable, Optional, Tuple
 import operator
 from functools import reduce, partial
-from packaging import version
 
 import jax
 import jax.numpy as jnp
-from jax import dtypes
+from jax import dtypes, ffi
 from jax.experimental.custom_partitioning import SdyShardingRule
 from jax.sharding import PartitionSpec
 
@@ -37,10 +36,6 @@ from ..quantize import (
     ScalingMode,
 )
 
-if version.parse(jax.__version__) >= version.parse("0.5.0"):
-    from jax import ffi  # pylint: disable=ungrouped-imports
-else:
-    from jax.extend import ffi  # pylint: disable=ungrouped-imports
 
 __all__ = ["act_lu", "dact_lu", "quantize_dact_dbias"]
 

transformer_engine/jax/cpp_extensions/attention.py

@@ -8,11 +8,10 @@ import warnings
 from dataclasses import dataclass, replace
 from functools import partial, reduce
 from typing import Optional, Tuple
-from packaging import version
 
 import jax
 import jax.numpy as jnp
-from jax import dtypes, lax
+from jax import dtypes, lax, ffi
 from jax.sharding import PartitionSpec, NamedSharding
 from jax.experimental.custom_partitioning import SdyShardingRule
 
@@ -49,12 +48,6 @@ from ..sharding import (
 )
 
 
-if version.parse(jax.__version__) >= version.parse("0.5.0"):
-    from jax import ffi  # pylint: disable=ungrouped-imports
-else:
-    from jax.extend import ffi  # pylint: disable=ungrouped-imports
-
-
 __all__ = [
     "FusedAttnHelper",
     "fused_attn_fwd",

transformer_engine/jax/cpp_extensions/base.py

@@ -7,22 +7,16 @@ import re
 import warnings
 from abc import ABCMeta, abstractmethod
 from functools import partial
-from packaging import version
 
 from jax.extend import core
 from jax.interpreters import xla, mlir
 from jax.experimental.custom_partitioning import custom_partitioning
 from jax._src.interpreters import batching
 from jax._src import dispatch
+from jax import ffi
 
-import jax
 import transformer_engine_jax
 
-if version.parse(jax.__version__) >= version.parse("0.5.0"):
-    from jax import ffi  # pylint: disable=ungrouped-imports
-else:
-    from jax.extend import ffi  # pylint: disable=ungrouped-imports
-
 
 class BasePrimitive(metaclass=ABCMeta):
     """

transformer_engine/jax/cpp_extensions/normalization.py

@@ -7,11 +7,10 @@ import warnings
 import operator
 from functools import partial, cache, reduce
 from typing import Optional, Union
-from packaging import version
 
 import jax
 import jax.numpy as jnp
-from jax import dtypes
+from jax import dtypes, ffi
 from jax.experimental.custom_partitioning import SdyShardingRule
 from jax.interpreters.mlir import ir
 from jax.sharding import PartitionSpec
@@ -38,11 +37,6 @@ from ..quantize import (
     ScalingMode,
 )
 
-if version.parse(jax.__version__) >= version.parse("0.5.0"):
-    from jax import ffi  # pylint: disable=ungrouped-imports
-else:
-    from jax.extend import ffi  # pylint: disable=ungrouped-imports
-
 
 __all__ = [
     "layernorm_fwd",

transformer_engine/jax/cpp_extensions/quantization.py

@@ -6,11 +6,10 @@ import operator
 from functools import reduce
 from typing import Tuple, Optional, Union
 import math
-from packaging import version
 
 import jax
 import jax.numpy as jnp
-from jax import dtypes
+from jax import dtypes, ffi
 from jax.experimental.custom_partitioning import SdyShardingRule
 from jax.sharding import PartitionSpec
 
@@ -41,11 +40,6 @@ from ..quantize import (
     NoScaleTensor,
 )
 
-if version.parse(jax.__version__) >= version.parse("0.5.0"):
-    from jax import ffi  # pylint: disable=ungrouped-imports
-else:
-    from jax.extend import ffi  # pylint: disable=ungrouped-imports
-
 
 __all__ = ["quantize", "quantize_dbias", "grouped_quantize", "grouped_dbias"]
 

transformer_engine/jax/cpp_extensions/softmax.py

@@ -6,22 +6,16 @@ from abc import abstractmethod
 from functools import partial, reduce
 import operator
 import warnings
-from packaging import version
 
 import jax
 import jax.numpy as jnp
-from jax import dtypes
+from jax import dtypes, ffi
 from jax.sharding import PartitionSpec, NamedSharding
 
 from .base import BasePrimitive, register_primitive
 from .misc import get_padded_spec, check_valid_batch_dims
 from ..softmax import SoftmaxType
 
-if version.parse(jax.__version__) >= version.parse("0.5.0"):
-    from jax import ffi  # pylint: disable=ungrouped-imports
-else:
-    from jax.extend import ffi  # pylint: disable=ungrouped-imports
-
 
 __all__ = [
     "scaled_softmax_fwd",