run_summarization_no_trainer
@sgugger Hello! I just tried to run the code to explore this example https://github.com/huggingface/transformers/blob/main/examples/pytorch/summarization/run_summarization_no_trainer.py

this is my yml file to build the env

> name: sum
> 
> channels:
>   - pytorch
>   - conda-forge
>   - defaults
> 
> dependencies:
>   - jupyterlab
>   - pip
>   - python=3.9
>   - pytorch
>   - tensorboard
>   - torchaudio
>   - torchvision
>   - tqdm
>   - tokenizers
>   - prettytable
>   - einops
>   - matplotlib
>   - accelerate
>   - datasets
>   - sentencepiece != 0.1.92
>   - protobuf
>   - nltk
>   - py7zr
>   - transformers
> 

then pip install rouge-score

after that simply I ran thhe command 

`accelerate launch run_summarization_no_trainer.py     --model_name_or_path t5-small     --dataset_name cnn_dailymail     --dataset_config '3.0.0'     --source_prefix 'summarize: '     --output_dir output/tst-summarization`

and got the error 

> Traceback (most recent call last):
>   File "/home/arij/anaconda3/envs/sum/bin/accelerate", line 10, in <module>
>     sys.exit(main())
>   File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/accelerate_cli.py", line 43, in main
>     args.func(args)
>   File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 568, in launch_command
>     simple_launcher(args)
>   File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 235, in simple_launcher
>     mixed_precision = PrecisionType(args.mixed_precision.lower())
> AttributeError: 'NoneType' object has no attribute 'lower'

How to fix it?
Did you run `accelerte config`? What's the result of `accelerate env`?<|||||>accelerate env

Copy-and-paste the text below in your GitHub issue

- `Accelerate` version: 0.10.0
- Platform: Linux-5.15.0-41-generic-x86_64-with-glibc2.31
- Python version: 3.9.13
- Numpy version: 1.22.3
- PyTorch version (GPU?): 1.12.0 (True)
- `Accelerate` default config:
        Not found

accelerate test

Running:  accelerate-launch --config_file=None /home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/test_utils/test_script.py
stderr: Traceback (most recent call last):
stderr:   File "/home/arij/anaconda3/envs/sum/bin/accelerate-launch", line 10, in <module>
stderr:     sys.exit(main())
stderr:   File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 574, in main
stderr:     launch_command(args)
stderr:   File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 523, in launch_command
stderr:     defaults = load_config_from_file(args.config_file)
stderr:   File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/config/config_args.py", line 45, in load_config_from_file
stderr:     with open(config_file, "r", encoding="utf-8") as f:
stderr: FileNotFoundError: [Errno 2] No such file or directory: '/home/arij/.cache/huggingface/accelerate/default_config.yaml'
Traceback (most recent call last):
  File "/home/arij/anaconda3/envs/sum/bin/accelerate", line 10, in <module>
    sys.exit(main())
  File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/accelerate_cli.py", line 43, in main
    args.func(args)
  File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/test.py", line 52, in test_command
    result = execute_subprocess_async(cmd, env=os.environ.copy())
  File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/test_utils/testing.py", line 276, in execute_subprocess_async
    raise RuntimeError(
RuntimeError: 'accelerate-launch --config_file=None /home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/test_utils/test_script.py' failed with returncode 1

The combined stderr from workers follows:
Traceback (most recent call last):
  File "/home/arij/anaconda3/envs/sum/bin/accelerate-launch", line 10, in <module>
    sys.exit(main())
  File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 574, in main
    launch_command(args)
  File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/launch.py", line 523, in launch_command
    defaults = load_config_from_file(args.config_file)
  File "/home/arij/anaconda3/envs/sum/lib/python3.9/site-packages/accelerate/commands/config/config_args.py", line 45, in load_config_from_file
    with open(config_file, "r", encoding="utf-8") as f:
FileNotFoundError: [Errno 2] No such file or directory: '/home/arij/.cache/huggingface/accelerate/default_config.yaml'
accelerte config
accelerte: command not found
<|||||>That was a typo, sorry. You need to run `accelerate config` before running `accelerate launch` and answer the small questionnaire.<|||||>one of the questions is Do you want to use DeepSpeed? [yes/NO]: 
what is the better choice here?<|||||>could you please send any link that helps how to figure the questionaire using deepspeed?<|||||>Any way these are my steps

> (sum) arij@dgx3:~/summarization/tutorial$ accelerate config
> In which compute environment are you running? ([0] This machine, [1] AWS (Amazon SageMaker)): 0
> Which type of machine are you using? ([0] No distributed training, [1] multi-CPU, [2] multi-GPU, [3] TPU): 2
> How many different machines will you use (use more than 1 for multi-node training)? [1]: 3
> What is the rank of this machine (from 0 to the number of machines - 1 )? [0]: 9
> What is the IP address of the machine that will host the main process? ###########33(hidden for security)
> What is the port you will use to communicate with the main process? 8887
> Do you want to use DeepSpeed? [yes/NO]: yes
> Do you want to specify a json file to a DeepSpeed config? [yes/NO]: yes
> Please enter the path to the json DeepSpeed config file: 
> Do you want to enable `deepspeed.zero.Init` when using ZeRO Stage-3 for constructing massive models? [yes/NO]: 
> Which Type of launcher do you want to use [0] pdsh, [1] standard, [2] openmpi, [3] mvapich)? [0]: 
> DeepSpeed configures multi-node compute resources with hostfile. Each row is of the format `hostname slots=[num_gpus]`, e.g., `localhost slots=2`; for more information please refer official [documentation](https://www.deepspeed.ai/getting-started/#resource-configuration-multi-node). Please specify the location of hostfile: 
> Do you want to specify exclusion filter string? [yes/NO]: 
> Do you want to specify inclusion filter string? [yes/NO]: 
> How many GPU(s) should be used for distributed training? [1]:8
> (sum) arij@dgx3:~/summarization/tutorial$ accelerate launch run_summarization_no_trainer.py     --model_name_or_path t5-small     --dataset_name cnn_dailymail     --dataset_config '3.0.0'     --source_prefix 'summarize: '     --output_dir output/tst-summarization
> [2022-07-18 20:47:06,728] [WARNING] [runner.py:159:fetch_hostfile] Unable to find hostfile, will proceed with training with local resources only.
> [2022-07-18 20:47:06,728] [INFO] [runner.py:457:main] cmd = /home/arij/anaconda3/envs/sum/bin/python3.9 -u -m deepspeed.launcher.launch --world_info=eyJsb2NhbGhvc3QiOiBbMCwgMV19 --master_addr=127.0.0.1 --master_port=29500 --no_local_rank run_summarization_no_trainer.py --model_name_or_path t5-small --dataset_name cnn_dailymail --dataset_config 3.0.0 --source_prefix summarize:  --output_dir output/tst-summarization
> [2022-07-18 20:47:08,004] [INFO] [launch.py:103:main] WORLD INFO DICT: {'localhost': [0, 1]}
> [2022-07-18 20:47:08,004] [INFO] [launch.py:109:main] nnodes=1, num_local_procs=2, node_rank=0
> [2022-07-18 20:47:08,004] [INFO] [launch.py:122:main] global_rank_mapping=defaultdict(<class 'list'>, {'localhost': [0, 1]})
> [2022-07-18 20:47:08,004] [INFO] [launch.py:123:main] dist_world_size=2
> [2022-07-18 20:47:08,004] [INFO] [launch.py:125:main] Setting CUDA_VISIBLE_DEVICES=0,1
> args: 
> 
> Namespace(dataset_name='cnn_dailymail', dataset_config_name='3.0.0', train_file=None, validation_file=None, ignore_pad_token_for_loss=True, max_source_length=1024, source_prefix='summarize: ', preprocessing_num_workers=None, overwrite_cache=None, max_target_length=128, val_max_target_length=None, max_length=128, num_beams=None, pad_to_max_length=False, model_name_or_path='t5-small', config_name=None, tokenizer_name=None, text_column=None, summary_column=None, use_slow_tokenizer=False, per_device_train_batch_size=8, per_device_eval_batch_size=8, learning_rate=5e-05, weight_decay=0.0, num_train_epochs=3, max_train_steps=None, gradient_accumulation_steps=1, lr_scheduler_type=<SchedulerType.LINEAR: 'linear'>, num_warmup_steps=0, output_dir='output/tst-summarization', seed=None, model_type=None, push_to_hub=False, hub_model_id=None, hub_token=None, checkpointing_steps=None, resume_from_checkpoint=None, with_tracking=False, report_to='all')
> [2022-07-18 20:47:30,042] [INFO] [launch.py:210:main] Process 1054725 exits successfully.
> args: 
> 
> Namespace(dataset_name='cnn_dailymail', dataset_config_name='3.0.0', train_file=None, validation_file=None, ignore_pad_token_for_loss=True, max_source_length=1024, source_prefix='summarize: ', preprocessing_num_workers=None, overwrite_cache=None, max_target_length=128, val_max_target_length=None, max_length=128, num_beams=None, pad_to_max_length=False, model_name_or_path='t5-small', config_name=None, tokenizer_name=None, text_column=None, summary_column=None, use_slow_tokenizer=False, per_device_train_batch_size=8, per_device_eval_batch_size=8, learning_rate=5e-05, weight_decay=0.0, num_train_epochs=3, max_train_steps=None, gradient_accumulation_steps=1, lr_scheduler_type=<SchedulerType.LINEAR: 'linear'>, num_warmup_steps=0, output_dir='output/tst-summarization', seed=None, model_type=None, push_to_hub=False, hub_model_id=None, hub_token=None, checkpointing_steps=None, resume_from_checkpoint=None, with_tracking=False, report_to='all')
> [2022-07-18 20:47:39,051] [INFO] [launch.py:210:main] Process 1054726 exits successfully.


Still something wrong)<|||||>I think there should be full instructions on how to use accelerate , it is not clear. Thanks for your reply
<|||||>Interesting that I was facing the exact same issue right now. The fix for me was to pass the local config I created.

`accelerate launch --config_file <your config file> your_file.py`<|||||>@soumyasanyal could you please tell the steps I am absolutely new) or post your config<|||||>Sure! I just followed the steps in this [link](https://huggingface.co/docs/accelerate/quicktour). The steps I followed are:
```
accelerate config --config_file ./accelerate.yaml --> answer all the questions in the questionnaire
accelerate test --config_file ./accelerate.yaml
accelerate launch --config_file ./accelerate.yaml script.py
```

My config file is as follows (but it can change as per your requirements. I just wanted to run a job on 8 GPUs in a single node, without DeepSpeed or mixed precision):
```
compute_environment: LOCAL_MACHINE
deepspeed_config: {}
distributed_type: MULTI_GPU
fsdp_config: {}
machine_rank: 0
main_process_ip: null
main_process_port: null
main_training_function: main
mixed_precision: 'no'
num_machines: 1
num_processes: 8
use_cpu: false
```

I was previously running `accelerate launch script.py` without mentioning the config file when I faced the issue that you reported here.

Also FYI, note that the doc says that integration of accelerate with DeepSpeed is [experimental](https://huggingface.co/docs/accelerate/quicktour#deepspeed).<|||||>@sgugger sorry for reopenning the issue while using this script using T5 over cnn-dialy dataset
under this configuration


> compute_environment: LOCAL_MACHINE
> deepspeed_config: {}
> distributed_type: MULTI_GPU
> fsdp_config: {}
> machine_rank: 0
> main_process_ip: null
> main_process_port: null
> main_training_function: main
> mixed_precision: 'no'
> num_machines: 1
> num_processes: 2
> use_cpu: false


 I got the error 
```
AttributeError: 'Accelerator' object has no attribute 'gather_for_metrics'
    generated_tokens, labels = accelerator.gather_for_metrics((generated_tokens, labels))
AttributeError: 'Accelerator' object has no attribute 'gather_for_metrics'
    generated_tokens, labels = accelerator.gather_for_metrics((generated_tokens, labels))
AttributeError: 'Accelerator' object has no attribute 'gather_for_metrics'
```
For this error replacing gather_for_metrics  with just `gather` as old version of this code, gives me zero list of gathered `decoded_preds, decoded_labels` . and gather for metrics did not work.

with this configuration 

> compute_environment: LOCAL_MACHINE
> deepspeed_config:
>   gradient_accumulation_steps: 1
>   offload_optimizer_device: none
>   offload_param_device: none
>   zero3_init_flag: false
>   zero_stage: 2
> distributed_type: DEEPSPEED
> fsdp_config: {}
> machine_rank: 0
> main_process_ip: null
> main_process_port: null
> main_training_function: main
> mixed_precision: 'no'
> num_machines: 1
> num_processes: 8
> use_cpu: false


I get this error

> RuntimeError: CUDA out of memory. Tried to allocate 1024.00 MiB (GPU 7; 10.92 GiB total capacity; 9.83 GiB already allocated; 293.50 MiB free; 9.91 GiB reserved in total by PyTorch) If reserved memory is >> allocated memory try setting max_split_size_mb to avoid fragmentation.  See documentation for Memory Management and PYTORCH_CUDA_ALLOC_CONF
>     ret = input.softmax(dim)
> RuntimeError: CUDA out of memory. Tried to allocate 1024.00 MiB (GPU 1; 10.92 GiB total capacity; 9.83 GiB already allocated; 245.50 MiB free; 9.91 GiB reserved in total by PyTorch) If reserved memory is >> allocated memory try setting max_split_size_mb to avoid fragmentation.  See documentation for Memory Management and PYTORCH_CUDA_ALLOC_CONF
> <|||||>@muellerzr <|||||>@Arij-Aladel in this case you should reduce your batch size most likely, but I'll be running it myself in just a moment<|||||>I did already still problem of not finding gather_for_metric attribute
<|||||>You can simply run the example as is<|||||>Thanks @Arij-Aladel, I think I have found the fix. Can you try running the following training script on your end to verify? (I have wget to make your life easy):

(Also as mentioned in the other post please make sure you have a pypi version of accelerate >= 0.12.0 to run the scripts, a PR was just merged yesterday to make them a requirement for all these scripts)

```bash
wget https://raw.githubusercontent.com/huggingface/transformers/muellerzr-fix-no-trainer/examples/pytorch/summarization/run_summarization_no_trainer.py
```<|||||>@muellerzr thanks for your response! As I understand your fix is just deleting this line

> 706  decoded_preds, decoded_labels = accelerator.gather_for_metrics(decoded_preds, decoded_labels)
?? 

my life with wget was not easier)))

> wget https://raw.githubusercontent.com/huggingface/transformers/muellerzr-fix-no-trainer/examples/pytorch/summarization/run_summarization_no_trainer.py
> --2022-11-17 10:45:24--  https://raw.githubusercontent.com/huggingface/transformers/muellerzr-fix-no-trainer/examples/pytorch/summarization/run_summarization_no_trainer.py
> Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.109.133, 185.199.111.133, 185.199.108.133, ...
> Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|185.199.109.133|:443... connected.
> HTTP request sent, awaiting response... 404 Not Found
> 2022-11-17 10:45:24 ERROR 404: Not Found.     <|||||>![image](https://user-images.githubusercontent.com/68355048/202458650-c33c85ae-d134-49ee-8749-1a44e3c0cd2e.png)
Really I do not know what is wrong with this script  .....<|||||>@Arij-Aladel yes the fix got merged yesterday, you can find it here: https://github.com/huggingface/transformers/blob/main/examples/pytorch/summarization/run_summarization_no_trainer.py

I would highly recommend doing `pip install -r transformers/examples/pytorch/summarization/requirements.txt -U` (the txt file here: https://github.com/huggingface/transformers/blob/main/examples/pytorch/summarization/requirements.txt) to avoid these dependency issues you have been struggling with as the script ran just fine for me.<|||||>![image](https://user-images.githubusercontent.com/68355048/202462056-64ce20dd-2d23-4046-a478-f62d2142bbfe.png)
After 

> pip install -r transformers/examples/pytorch/summarization/requirements.txt -U

 :)<|||||>Ok seems it was package installation issue after your fix, I have uninstalled all packages then reinstall packages according to requirements file. It works now thanks @muellerzr <|||||>Great! Can this be closed now @Arij-Aladel? :) <|||||>Yes , thanks . I am closing it.