bge-reranker-v2-minicpm-layerwise微调loss为1的问题

[sevenandseven]

CUDA_VISIBLE_DEVICES=6,7 torchrun --nproc_per_node 2
-m FlagEmbedding.llm_reranker.finetune_for_layerwise.run
--output_dir ./results/reranker/bge-reranker-v2-minicpm-layerwise
--model_name_or_path /media/ai/HDD/Teamwork/LLM_Embedding_model/Embedding/Embedding/bge-reranker-v2-minicpm-layerwise
--train_data /media/ai/HDD/Teamwork/wangenzhi/FlagEmbedding-master/official/FlagEmbedding/fine_data/layer_reranker.jsonl
--learning_rate 6e-5
--fp16
--num_train_epochs 1
--per_device_train_batch_size 2
--gradient_accumulation_steps 4
--dataloader_drop_last True
--query_max_len 64
--passage_max_len 256
--train_group_size 2
--logging_steps 10
--save_steps 10
--save_total_limit 10
--warmup_ratio 0.1
--use_lora True
--lora_rank 32
--lora_alpha 64
--use_flash_attn False
--target_modules q_proj k_proj v_proj o_proj
--start_layer 8
--head_multi True
--head_type simple
--lora_extra_parameters linear_head

When using the above command for fine-tuning, if the loss value becomes 'loss': 0.0, 'grad_norm': nan, 'learning_rate': 0.0, '
, you can try the following methods to resolve the issue:

[545999961]

是一开始就为0吗，还是训练的过程中变为0的
训练的过程中变为0的话可以尝试将fp16换为bf16

[sevenandseven]

是一开始就为0吗，还是训练的过程中变为0的 训练的过程中变为0的话可以尝试将fp16换为bf16

一开始就为0，我将学习率调整为2e-7之后，loss开始变得很大，从几百多开始逐渐下降。我将学习率调整为2e-4同样出现以下情况。
warnings.warn(
{'loss': 514.8239, 'grad_norm': 538.07861328125, 'learning_rate': 0.00019964850615114237, 'epoch': 0.0}
{'loss': 466.7511, 'grad_norm': 598.7839965820312, 'learning_rate': 0.00019929701230228473, 'epoch': 0.0}
{'loss': 321.3008, 'grad_norm': 395.62548828125, 'learning_rate': 0.0001989455184534271, 'epoch': 0.01}
{'loss': 266.1515, 'grad_norm': 460.9885559082031, 'learning_rate': 0.00019859402460456943, 'epoch': 0.01}
{'loss': 234.468, 'grad_norm': 616.3043212890625, 'learning_rate': 0.00019824253075571176, 'epoch': 0.01}
{'loss': 261.4581, 'grad_norm': 646.939208984375, 'learning_rate': 0.00019789103690685413, 'epoch': 0.01}
{'loss': 198.6534, 'grad_norm': 580.589599609375, 'learning_rate': 0.0001975395430579965, 'epoch': 0.01}
{'loss': 174.0701, 'grad_norm': 360.647216796875, 'learning_rate': 0.00019718804920913885, 'epoch': 0.01}
{'loss': 187.0631, 'grad_norm': 375.31640625, 'learning_rate': 0.0001968365553602812, 'epoch': 0.02}
{'loss': 155.5526, 'grad_norm': 310.011474609375, 'learning_rate': 0.00019648506151142357, 'epoch': 0.02}

[545999961]

训练的时候加上参数--finetune_type from_raw_model from_finetuned_model
学习率应该是2e-4的，设置--deepspeed stage1.json看看是否还会出现上述问题

[sevenandseven]

训练的时候加上参数--finetune_type from_raw_model from_finetuned_model 学习率应该是2e-4的，设置--deepspeed stage1.json看看是否还会出现上述问题

我添加了这个参数还是同样的问题，损失还是很大。

[545999961]

训练的时候加上参数--finetune_type from_raw_model from_finetuned_model 学习率应该是2e-4的，设置--deepspeed stage1.json看看是否还会出现上述问题

我添加了这个参数还是同样的问题，损失还是很大。

还是从500多开始下降吗

[sevenandseven]

训练的时候加上参数--finetune_type from_raw_model from_finetuned_model 学习率应该是2e-4的，设置--deepspeed stage1.json看看是否还会出现上述问题

我添加了这个参数还是同样的问题，损失还是很大。

还是从500多开始下降吗
是的。--finetune_type from_raw_model from_finetuned_model 这个参数是2选一吗？同时输入会出现以下错误。

File "/media/ai/HDD/Teamwork/wangenzhi/FlagEmbedding-master/official/FlagEmbedding/FlagEmbedding/llm_reranker/finetune_for_layerwise/run.py", line 23, in main
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
File "/home/ai/anaconda3/envs/langchain_chatchat/lib/python3.10/site-packages/transformers/hf_argparser.py", line 347, in parse_args_into_dataclasses
raise ValueError(f"Some specified arguments are not used by the HfArgumentParser: {remaining_args}")
ValueError: Some specified arguments are not used by the HfArgumentParser: ['from_finetuned_model']
ERROR:torch.distributed.elastic.multiprocessing.api:failed (exitcode: 1) local_rank: 0 (pid: 54498) of binary: /home/ai/anaconda3/envs/langchain_chatchat/bin/python

[545999961]

是2选一，from_finetuned_model 就可以，最后loss是所有层loss的累加，所以会显得比较大
可以对比从reranker开始微调和直接从原始模型开始微调的loss差距。如果从微调好的模型开始的loss比直接从原始模型开始的loss小很多，那就说明没有问题

[sevenandseven]

是2选一，from_finetuned_model 就可以，最后loss是所有层loss的累加，所以会显得比较大 可以对比从reranker开始微调和直接从原始模型开始微调的loss差距。如果从微调好的模型开始的loss比直接从原始模型开始的loss小很多，那就说明没有问题

你好，这个是我的从原始模型微调的loss变化：
warnings.warn(
{'loss': 514.8239, 'grad_norm': 538.07861328125, 'learning_rate': 0.00019964850615114237, 'epoch': 0.0}
{'loss': 466.7511, 'grad_norm': 598.7839965820312, 'learning_rate': 0.00019929701230228473, 'epoch': 0.0}
{'loss': 321.3008, 'grad_norm': 395.62548828125, 'learning_rate': 0.0001989455184534271, 'epoch': 0.01}
{'loss': 266.1515, 'grad_norm': 460.9885559082031, 'learning_rate': 0.00019859402460456943, 'epoch': 0.01}
{'loss': 234.468, 'grad_norm': 616.3043212890625, 'learning_rate': 0.00019824253075571176, 'epoch': 0.01}
{'loss': 261.4581, 'grad_norm': 646.939208984375, 'learning_rate': 0.00019789103690685413, 'epoch': 0.01}
{'loss': 198.6534, 'grad_norm': 580.589599609375, 'learning_rate': 0.0001975395430579965, 'epoch': 0.01}
{'loss': 174.0701, 'grad_norm': 360.647216796875, 'learning_rate': 0.00019718804920913885, 'epoch': 0.01}
{'loss': 187.0631, 'grad_norm': 375.31640625, 'learning_rate': 0.0001968365553602812, 'epoch': 0.02}
{'loss': 155.5526, 'grad_norm': 310.011474609375, 'learning_rate': 0.00019648506151142357, 'epoch': 0.02}
{'loss': 163.7957, 'grad_norm': 330.1082763671875, 'learning_rate': 0.0001961335676625659, 'epoch': 0.02}
{'loss': 134.966, 'grad_norm': 206.18638610839844, 'learning_rate': 0.00019578207381370827, 'epoch': 0.02}
{'loss': 112.1916, 'grad_norm': 181.63343811035156, 'learning_rate': 0.00019543057996485063, 'epoch': 0.02}
{'loss': 107.8773, 'grad_norm': 230.8634796142578, 'learning_rate': 0.00019507908611599297, 'epoch': 0.02}
{'loss': 109.3568, 'grad_norm': 197.41690063476562, 'learning_rate': 0.00019472759226713533, 'epoch': 0.03}
{'loss': 106.0037, 'grad_norm': 173.08645629882812, 'learning_rate': 0.0001943760984182777, 'epoch': 0.03}
{'loss': 89.0028, 'grad_norm': 117.9629898071289, 'learning_rate': 0.00019402460456942005, 'epoch': 0.03}
{'loss': 71.7148, 'grad_norm': 102.20894622802734, 'learning_rate': 0.0001936731107205624, 'epoch': 0.03}
{'loss': 77.9973, 'grad_norm': 114.82682037353516, 'learning_rate': 0.00019332161687170475, 'epoch': 0.03}
{'loss': 73.5833, 'grad_norm': 81.8402328491211, 'learning_rate': 0.0001929701230228471, 'epoch': 0.04}
{'loss': 72.5585, 'grad_norm': 98.48847198486328, 'learning_rate': 0.00019261862917398947, 'epoch': 0.04}
{'loss': 59.0707, 'grad_norm': 86.48011016845703, 'learning_rate': 0.0001922671353251318, 'epoch': 0.04}
{'loss': 62.4839, 'grad_norm': 79.3683090209961, 'learning_rate': 0.00019191564147627417, 'epoch': 0.04}
{'loss': 59.2522, 'grad_norm': 57.751861572265625, 'learning_rate': 0.00019156414762741653, 'epoch': 0.04}
{'loss': 44.6661, 'grad_norm': 58.833187103271484, 'learning_rate': 0.0001912126537785589, 'epoch': 0.04}
{'loss': 40.7933, 'grad_norm': 42.0254020690918, 'learning_rate': 0.00019086115992970125, 'epoch': 0.05}
{'loss': 50.1218, 'grad_norm': 45.612060546875, 'learning_rate': 0.00019050966608084359, 'epoch': 0.05}
{'loss': 42.3546, 'grad_norm': 34.3447151184082, 'learning_rate': 0.00019015817223198595, 'epoch': 0.05}
{'loss': 50.2781, 'grad_norm': 44.68593215942383, 'learning_rate': 0.0001898066783831283, 'epoch': 0.05}
{'loss': 46.8812, 'grad_norm': 53.49127960205078, 'learning_rate': 0.00018945518453427067, 'epoch': 0.05}
{'loss': 51.3008, 'grad_norm': 49.961978912353516, 'learning_rate': 0.000189103690685413, 'epoch': 0.05}
{'loss': 39.5842, 'grad_norm': 41.7624626159668, 'learning_rate': 0.00018875219683655537, 'epoch': 0.06}
{'loss': 33.7966, 'grad_norm': 25.9057674407959, 'learning_rate': 0.00018840070298769773, 'epoch': 0.06}
{'loss': 28.1447, 'grad_norm': 15.165142059326172, 'learning_rate': 0.00018804920913884006, 'epoch': 0.06}

这个是我从微调模型开始的loss变化：
{'loss': 57.9339, 'grad_norm': 155.48330688476562, 'learning_rate': 0.00019964850615114237, 'epoch': 0.0}
{'loss': 62.5916, 'grad_norm': 147.96661376953125, 'learning_rate': 0.00019929701230228473, 'epoch': 0.0}
{'loss': 88.7841, 'grad_norm': 180.3634490966797, 'learning_rate': 0.0001989455184534271, 'epoch': 0.01}
{'loss': 31.9065, 'grad_norm': 44.84025573730469, 'learning_rate': 0.00019859402460456943, 'epoch': 0.01}
{'loss': 33.4273, 'grad_norm': 46.82331848144531, 'learning_rate': 0.00019824253075571176, 'epoch': 0.01}
{'loss': 42.595, 'grad_norm': 60.91260528564453, 'learning_rate': 0.00019789103690685413, 'epoch': 0.01}
{'loss': 30.1122, 'grad_norm': 29.61505889892578, 'learning_rate': 0.0001975395430579965, 'epoch': 0.01}
{'loss': 33.3277, 'grad_norm': 31.189620971679688, 'learning_rate': 0.00019718804920913885, 'epoch': 0.01}
{'loss': 59.5543, 'grad_norm': 72.22501373291016, 'learning_rate': 0.0001968365553602812, 'epoch': 0.02}
{'loss': 49.1377, 'grad_norm': 60.78026580810547, 'learning_rate': 0.00019648506151142357, 'epoch': 0.02}
{'loss': 16.8538, 'grad_norm': 16.02872085571289, 'learning_rate': 0.0001961335676625659, 'epoch': 0.02}
{'loss': 51.4577, 'grad_norm': 49.48100662231445, 'learning_rate': 0.00019578207381370827, 'epoch': 0.02}
{'loss': 48.7724, 'grad_norm': 42.62297439575195, 'learning_rate': 0.00019543057996485063, 'epoch': 0.02}

两者能有10倍的差距，这个正常吗？
原始模型指的是预训练的大语言模型吗？微调模型指的是基于大预言模型微调的层reranker模型吗？

[545999961]

是2选一，from_finetuned_model 就可以，最后loss是所有层loss的累加，所以会显得比较大 可以对比从reranker开始微调和直接从原始模型开始微调的loss差距。如果从微调好的模型开始的loss比直接从原始模型开始的loss小很多，那就说明没有问题

你好，这个是我的从原始模型微调的loss变化： warnings.warn( {'loss': 514.8239, 'grad_norm': 538.07861328125, 'learning_rate': 0.00019964850615114237, 'epoch': 0.0} {'loss': 466.7511, 'grad_norm': 598.7839965820312, 'learning_rate': 0.00019929701230228473, 'epoch': 0.0} {'loss': 321.3008, 'grad_norm': 395.62548828125, 'learning_rate': 0.0001989455184534271, 'epoch': 0.01} {'loss': 266.1515, 'grad_norm': 460.9885559082031, 'learning_rate': 0.00019859402460456943, 'epoch': 0.01} {'loss': 234.468, 'grad_norm': 616.3043212890625, 'learning_rate': 0.00019824253075571176, 'epoch': 0.01} {'loss': 261.4581, 'grad_norm': 646.939208984375, 'learning_rate': 0.00019789103690685413, 'epoch': 0.01} {'loss': 198.6534, 'grad_norm': 580.589599609375, 'learning_rate': 0.0001975395430579965, 'epoch': 0.01} {'loss': 174.0701, 'grad_norm': 360.647216796875, 'learning_rate': 0.00019718804920913885, 'epoch': 0.01} {'loss': 187.0631, 'grad_norm': 375.31640625, 'learning_rate': 0.0001968365553602812, 'epoch': 0.02} {'loss': 155.5526, 'grad_norm': 310.011474609375, 'learning_rate': 0.00019648506151142357, 'epoch': 0.02} {'loss': 163.7957, 'grad_norm': 330.1082763671875, 'learning_rate': 0.0001961335676625659, 'epoch': 0.02} {'loss': 134.966, 'grad_norm': 206.18638610839844, 'learning_rate': 0.00019578207381370827, 'epoch': 0.02} {'loss': 112.1916, 'grad_norm': 181.63343811035156, 'learning_rate': 0.00019543057996485063, 'epoch': 0.02} {'loss': 107.8773, 'grad_norm': 230.8634796142578, 'learning_rate': 0.00019507908611599297, 'epoch': 0.02} {'loss': 109.3568, 'grad_norm': 197.41690063476562, 'learning_rate': 0.00019472759226713533, 'epoch': 0.03} {'loss': 106.0037, 'grad_norm': 173.08645629882812, 'learning_rate': 0.0001943760984182777, 'epoch': 0.03} {'loss': 89.0028, 'grad_norm': 117.9629898071289, 'learning_rate': 0.00019402460456942005, 'epoch': 0.03} {'loss': 71.7148, 'grad_norm': 102.20894622802734, 'learning_rate': 0.0001936731107205624, 'epoch': 0.03} {'loss': 77.9973, 'grad_norm': 114.82682037353516, 'learning_rate': 0.00019332161687170475, 'epoch': 0.03} {'loss': 73.5833, 'grad_norm': 81.8402328491211, 'learning_rate': 0.0001929701230228471, 'epoch': 0.04} {'loss': 72.5585, 'grad_norm': 98.48847198486328, 'learning_rate': 0.00019261862917398947, 'epoch': 0.04} {'loss': 59.0707, 'grad_norm': 86.48011016845703, 'learning_rate': 0.0001922671353251318, 'epoch': 0.04} {'loss': 62.4839, 'grad_norm': 79.3683090209961, 'learning_rate': 0.00019191564147627417, 'epoch': 0.04} {'loss': 59.2522, 'grad_norm': 57.751861572265625, 'learning_rate': 0.00019156414762741653, 'epoch': 0.04} {'loss': 44.6661, 'grad_norm': 58.833187103271484, 'learning_rate': 0.0001912126537785589, 'epoch': 0.04} {'loss': 40.7933, 'grad_norm': 42.0254020690918, 'learning_rate': 0.00019086115992970125, 'epoch': 0.05} {'loss': 50.1218, 'grad_norm': 45.612060546875, 'learning_rate': 0.00019050966608084359, 'epoch': 0.05} {'loss': 42.3546, 'grad_norm': 34.3447151184082, 'learning_rate': 0.00019015817223198595, 'epoch': 0.05} {'loss': 50.2781, 'grad_norm': 44.68593215942383, 'learning_rate': 0.0001898066783831283, 'epoch': 0.05} {'loss': 46.8812, 'grad_norm': 53.49127960205078, 'learning_rate': 0.00018945518453427067, 'epoch': 0.05} {'loss': 51.3008, 'grad_norm': 49.961978912353516, 'learning_rate': 0.000189103690685413, 'epoch': 0.05} {'loss': 39.5842, 'grad_norm': 41.7624626159668, 'learning_rate': 0.00018875219683655537, 'epoch': 0.06} {'loss': 33.7966, 'grad_norm': 25.9057674407959, 'learning_rate': 0.00018840070298769773, 'epoch': 0.06} {'loss': 28.1447, 'grad_norm': 15.165142059326172, 'learning_rate': 0.00018804920913884006, 'epoch': 0.06}

这个是我从微调模型开始的loss变化： {'loss': 57.9339, 'grad_norm': 155.48330688476562, 'learning_rate': 0.00019964850615114237, 'epoch': 0.0} {'loss': 62.5916, 'grad_norm': 147.96661376953125, 'learning_rate': 0.00019929701230228473, 'epoch': 0.0} {'loss': 88.7841, 'grad_norm': 180.3634490966797, 'learning_rate': 0.0001989455184534271, 'epoch': 0.01} {'loss': 31.9065, 'grad_norm': 44.84025573730469, 'learning_rate': 0.00019859402460456943, 'epoch': 0.01} {'loss': 33.4273, 'grad_norm': 46.82331848144531, 'learning_rate': 0.00019824253075571176, 'epoch': 0.01} {'loss': 42.595, 'grad_norm': 60.91260528564453, 'learning_rate': 0.00019789103690685413, 'epoch': 0.01} {'loss': 30.1122, 'grad_norm': 29.61505889892578, 'learning_rate': 0.0001975395430579965, 'epoch': 0.01} {'loss': 33.3277, 'grad_norm': 31.189620971679688, 'learning_rate': 0.00019718804920913885, 'epoch': 0.01} {'loss': 59.5543, 'grad_norm': 72.22501373291016, 'learning_rate': 0.0001968365553602812, 'epoch': 0.02} {'loss': 49.1377, 'grad_norm': 60.78026580810547, 'learning_rate': 0.00019648506151142357, 'epoch': 0.02} {'loss': 16.8538, 'grad_norm': 16.02872085571289, 'learning_rate': 0.0001961335676625659, 'epoch': 0.02} {'loss': 51.4577, 'grad_norm': 49.48100662231445, 'learning_rate': 0.00019578207381370827, 'epoch': 0.02} {'loss': 48.7724, 'grad_norm': 42.62297439575195, 'learning_rate': 0.00019543057996485063, 'epoch': 0.02}

两者能有10倍的差距，这个正常吗？ 原始模型指的是预训练的大语言模型吗？微调模型指的是基于大预言模型微调的层reranker模型吗？

是的
这个是正常的，从第二个开始继续微调就可以了