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provide temp flag for outside libs to detect multi-backend preview #1243

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merged 2 commits into from
Jun 21, 2024
Merged

provide temp flag for outside libs to detect multi-backend preview #1243

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971778c
provide temp flag for outside libs to detect multi-backend preview
Titus-von-Koeller Jun 6, 2024
66cff09
fix typo in comment
Titus-von-Koeller Jun 6, 2024
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7 changes: 7 additions & 0 deletions bitsandbytes/__init__.py
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Expand Up @@ -20,6 +20,13 @@
from .cextension import lib
from .nn import modules

# NOTE: this is a temporary flag to allow outside libraries to employ conditional logic while the refactor is still in
# alpha/beta: sth like `if getattr(bitsandbytes, "is_multi_backend_refactor_preview", False): do sth`
# the getattr() call above would default to False and any string evaluates to True. This way we have temporary thing
# that we can remove in Transformers with the next release after the official BNB multi-platform release; then
# eventually making it the new default (e.g. just remove if statement and dedent in Transformers)
is_multi_backend_refactor_preview = "TO BE REMOVED ONCE MERGED TO `main`" # bool evals to True for str
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If we wanted to make this a more permanent feature (and I don't see why not), it could just be e.g. features = {"multi_backend"}...


# Always register the CPU backend.
register_backend("cpu", CPUBackend())

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