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Support kernel cache directory with HF_KERNELS_CACHE env var #18

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merged 1 commit into from
Feb 4, 2025
Merged

Support kernel cache directory with HF_KERNELS_CACHE env var #18

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16 changes: 14 additions & 2 deletions src/hf_kernels/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,8 @@
from hf_kernels.compat import tomllib
from hf_kernels.lockfile import KernelLock

CACHE_DIR: Optional[str] = os.environ.get("HF_KERNELS_CACHE", None)


def build_variant():
import torch
Expand Down Expand Up @@ -43,6 +45,7 @@ def install_kernel(repo_id: str, revision: str, local_files_only: bool = False):
repo_path = snapshot_download(
repo_id,
allow_patterns=f"build/{build_variant()}/*",
cache_dir=CACHE_DIR,
revision=revision,
local_files_only=local_files_only,
)
Expand All @@ -55,6 +58,7 @@ def install_kernel_all_variants(
snapshot_download(
repo_id,
allow_patterns="build/*",
cache_dir=CACHE_DIR,
revision=revision,
local_files_only=local_files_only,
)
Expand All @@ -63,7 +67,11 @@ def install_kernel_all_variants(
def get_metadata(repo_id: str, revision: str, local_files_only: bool = False):
with open(
hf_hub_download(
repo_id, "build.toml", revision=revision, local_files_only=local_files_only
repo_id,
"build.toml",
cache_dir=CACHE_DIR,
revision=revision,
local_files_only=local_files_only,
),
"rb",
) as f:
Expand All @@ -83,7 +91,11 @@ def load_kernel(repo_id: str):
raise ValueError(f"Kernel `{repo_id}` is not locked")

filename = hf_hub_download(
repo_id, "build.toml", local_files_only=True, revision=locked_sha
repo_id,
"build.toml",
cache_dir=CACHE_DIR,
local_files_only=True,
revision=locked_sha,
)
with open(filename, "rb") as f:
metadata = tomllib.load(f)
Expand Down