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add bf16 check #587

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merged 4 commits into from
Sep 17, 2023
Merged

add bf16 check #587

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532e861
add bf16 check
winglian Sep 15, 2023
8ae6659
Update message for ampere
winglian Sep 17, 2023
bea85cb
use torch native bf16 check instead of transformers per PR feedback:
winglian Sep 17, 2023
d349b59
go back to using transformers check
winglian Sep 17, 2023
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9 changes: 9 additions & 0 deletions src/axolotl/utils/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
import os

import torch
from transformers.utils import is_torch_bf16_gpu_available
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from axolotl.utils.bench import log_gpu_memory_usage
from axolotl.utils.models import load_model_config
Expand Down Expand Up @@ -88,6 +89,14 @@ def normalize_config(cfg):


def validate_config(cfg):
if is_torch_bf16_gpu_available():
if not cfg.bf16 and not cfg.bfloat16:
LOG.info("bf16 support detected, but not enabled for this configuration.")
else:
if cfg.bf16 or cfg.bfloat16:
raise ValueError(
"bf16 requested, but not available on this GPU. Requires 30XX series or above."
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)
if cfg.max_packed_sequence_len and cfg.sample_packing:
raise ValueError(
"please set only one of max_packed_sequence_len (deprecated soon) or sample_packing"
Expand Down
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