mirror of
https://github.com/wassname/pytorch-lightning.git
synced 2026-09-23 13:40:39 +08:00
4ed3027309
* Set precision=16 when use_amp is passed as True * Update CHANGELOG.md * add use_amp to deprecated API * Update trainer.py * Update trainer.py * move the use_amp attribute to deprecated API * move use_amp deprecation back to Trainer's __init__ * drop unsed * drop deprecated * reorder imports * typing Co-authored-by: Jirka Borovec <Borda@users.noreply.github.com> Co-authored-by: William Falcon <waf2107@columbia.edu> Co-authored-by: J. Borovec <jirka.borovec@seznam.cz>
35 lines
942 B
Python
35 lines
942 B
Python
from abc import ABC
|
|
|
|
from pytorch_lightning import _logger as log
|
|
|
|
try:
|
|
from apex import amp
|
|
except ImportError:
|
|
APEX_AVAILABLE = False
|
|
else:
|
|
APEX_AVAILABLE = True
|
|
|
|
|
|
class TrainerAMPMixin(ABC):
|
|
|
|
# this is just a summary on variables used in this abstract class,
|
|
# the proper values/initialisation should be done in child class
|
|
precision: int
|
|
|
|
def init_amp(self, use_amp):
|
|
if use_amp and not APEX_AVAILABLE: # pragma: no-cover
|
|
raise ModuleNotFoundError("""
|
|
You set `use_amp=True` but do not have apex installed.
|
|
Install apex first using this guide and rerun with use_amp=True:
|
|
https://github.com/NVIDIA/apex#linux
|
|
|
|
this run will NOT use 16 bit precision
|
|
""")
|
|
|
|
if self.use_amp:
|
|
log.info('Using 16bit precision.')
|
|
|
|
@property
|
|
def use_amp(self) -> bool:
|
|
return self.precision == 16 and APEX_AVAILABLE
|