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Fix pipeline cell wrapper

This commit is contained in:
huangxinjing 2022-02-22 14:56:57 +08:00
parent 384aecbbbe
commit e948c00260
1 changed files with 8 additions and 1 deletions
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9
mindspore/python/mindspore/nn/wrap/loss_scale.py
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@ -496,6 +496,11 @@ class _TrainPipelineWithLossScaleCell(TrainOneStepCell):
self.get_status = P.NPUGetFloatStatus()
self.clear_before_grad = P.NPUClearFloatStatus()
self.reduce_sum = P.ReduceSum(keep_dims=False)
if self.parallel_mode not in [ParallelMode.SEMI_AUTO_PARALLEL, ParallelMode.AUTO_PARALLEL]:
raise ValueError(f"ParallelMode should be one of "
f"[ParallelMode.SEMI_AUTO_PARALLEL, ParallelMode.AUTO_PARALLEL], but found "
f"{self.parallel_mode}.")
self.allreduce = P.AllReduce()
self.base = Tensor(1, mstype.float32)
self.less_equal = P.LessEqual()
self.hyper_map = C.HyperMap()
@ -534,7 +539,9 @@ class _TrainPipelineWithLossScaleCell(TrainOneStepCell):
else:
accu_grads = self.grad_reducer(self.accu_grads)
grads = self.hyper_map(F.partial(grad_scale, scaling_sens * self.degree), grads, accu_grads)
cond = self.less_equal(self.base, flag_sum)
# sum overflow flag over devices
flag_reduce = self.allreduce(flag_sum)
cond = self.less_equal(self.base, flag_reduce)
overflow = cond
if self.loss_scaling_manager is not None:
overflow = self.loss_scaling_manager(self.scale_sense, cond)