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__init__.py
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__init__.py
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# Copyright 2023 The JAX Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import functools
import logging
import os
import pathlib
import platform
import sys
import jax._src.xla_bridge as xb
from jax._src.lib import cuda_plugin_extension
from jax._src.lib import xla_client
logger = logging.getLogger(__name__)
def initialize():
path = pathlib.Path(__file__).resolve().parent / "xla_cuda_plugin.so"
if not path.exists():
logger.warning(
"WARNING: Native library %s does not exist. This most likely indicates"
" an issue with how %s was built or installed.",
path,
__package__,
)
c_api = xb.register_plugin("cuda", priority=500, library_path=str(path))
if cuda_plugin_extension:
xla_client.register_custom_call_handler(
"CUDA",
functools.partial(
cuda_plugin_extension.register_custom_call_target, c_api
),
)
for _name, _value in cuda_plugin_extension.registrations().items():
xla_client.register_custom_call_target(_name, _value, platform="CUDA")
else:
logger.warning('cuda_plugin_extension is not found.')