Horovod error: TypeError: __init__() missing 2 required positional arguments: 'named_parameters' and 'compression'

[marsggbo]

Reproduce command

mpirun -np 2 python run.py +trainer.accelerator=horovod

the error is raised during trainer.test().

the full error info is below

Error executing job with overrides: ['+trainer.accelerator=horovod']
Traceback (most recent call last):
  File "run.py", line 31, in main
    return train(config)
  File "/home/user/code/lightning-hydra-template/src/train.py", line 82, in train
    trainer.test()
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/pytorch_lightning/trainer/trainer.py", line 579, in test
    results = self._run(model)
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/pytorch_lightning/trainer/trainer.py", line 753, in _run
    self.pre_dispatch()
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/pytorch_lightning/trainer/trainer.py", line 778, in pre_dispatch
    self.accelerator.pre_dispatch(self)
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/pytorch_lightning/accelerators/accelerator.py", line 108, in pre_dispatch
    self.training_type_plugin.pre_dispatch()
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/pytorch_lightning/plugins/training_type/horovod.py", line 93, in pre_dispatch
    optimizers = [
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/pytorch_lightning/plugins/training_type/horovod.py", line 94, in <listcomp>
    hvd.DistributedOptimizer(
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/horovod/torch/optimizer.py", line 585, in DistributedOptimizer
    return cls(optimizer.param_groups, named_parameters, compression, backward_passes_per_step, op,
  File "/home/user/.conda/envs/torch18/lib/python3.8/site-packages/horovod/torch/optimizer.py", line 41, in __init__
    super(self.__class__, self).__init__(params)
TypeError: __init__() missing 2 required positional arguments: 'named_parameters' and 'compression'

[ashleve]

@marsggbo Thanks,
I see you already resolved the issue Lightning-AI/pytorch-lightning#7839