Cleaner Cache `dtype` and `device` extraction for CUDA graph generation for quantizers compatibility by BlackSamorez · Pull Request #29079 · huggingface/transformers

BlackSamorez · 2024-02-17T19:59:55Z

What does this PR do?

As of now, this PR fixes a small problem preventing one from using CUDA graph generation from #28937 with quantized models.

In the long run, It would be great to have compiled generation actually working for GPTQ/AQLM/other quantization methods.

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amyeroberts · 2024-02-19T11:23:43Z

cc @younesbelkada

younesbelkada

Thanks a lot for fixing !
For retrieving the correct device, the fix sounds correct.
However for the dtype, I am afraid this might lead to some bugs / unexpected behaviours 😭 As many users call perform text generation after calling some utility methods such as prepare_model_for_kbit_training (using PEFT), we do sometimes cast the layer norms in FP32. This is quite a niche usecase though. I propose to be on the safe zone and retrieve the dtype similarly as what we do here: https://github.com/huggingface/transformers/blob/main/src/transformers/models/llama/modeling_llama.py#L451-L457 - can you let me know if applying that logic here would fix CUDA graph generation for quantized models?
Also, can you elaborate a bit on the original issue, i.e. what you are trying to achieve and what bug do you get
Thanks !

BlackSamorez · 2024-02-22T10:00:24Z

@younesbelkada The error I get on main is quite simple:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[8], [line 22](vscode-notebook-cell:?execution_count=8&line=22)
     [19](vscode-notebook-cell:?execution_count=8&line=19)     return new_token
     [21](vscode-notebook-cell:?execution_count=8&line=21) with torch.no_grad():
---> [22](vscode-notebook-cell:?execution_count=8&line=22)     model._setup_cache(StaticCache, BS, max_cache_len=max_cache_length)
     [24](vscode-notebook-cell:?execution_count=8&line=24)     ### PREFILL
     [25](vscode-notebook-cell:?execution_count=8&line=25)     # input_pos = torch.arange(seq_length, device=device)
     [26](vscode-notebook-cell:?execution_count=8&line=26)     cache_position = torch.arange(seq_length , device=device)

File [~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:817](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:817), in LlamaPreTrainedModel._setup_cache(self, cache_cls, max_batch_size, max_cache_len)
    [814](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:814)     self.register_buffer("causal_mask", torch.triu(causal_mask, diagonal=1), persistent=False)
    [816](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:816) for layer in self.model.layers:
--> [817](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:817)     weights = layer.self_attn.o_proj.weight
    [818](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:818)     layer.self_attn.past_key_value = cache_cls(
    [819](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:819)         self.config, max_batch_size, max_cache_len, device=weights.device, dtype=weights.dtype
    [820](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/transformers/models/llama/modeling_llama.py:820)     )

File [~/AQLM/.conda/lib/python3.10/site-packages/torch/nn/modules/module.py:1706](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/torch/nn/modules/module.py:1706), in Module.__getattr__(self, name)
   [1704](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/torch/nn/modules/module.py:1704)     if name in modules:
   [1705](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/torch/nn/modules/module.py:1705)         return modules[name]
-> [1706](https://vscode-remote+ssh-002dremote-002bdas8gpu4.vscode-resource.vscode-cdn.net/nfs/scistore14/alistgrp/apanfero/AQLM/~/AQLM/.conda/lib/python3.10/site-packages/torch/nn/modules/module.py:1706) raise AttributeError(f"'{type(self).__name__}' object has no attribute '{name}'")

AttributeError: 'QuantizedLinear' object has no attribute 'weight'

That's why, I believe, it would make sense to source device and dtype from outside the linear layer to be quantization-agnostic.

BlackSamorez · 2024-02-22T10:01:00Z

And I don't really understand what you're proposing with the code you referenced.

younesbelkada · 2024-02-22T10:03:04Z

@BlackSamorez thanks!
Sorry I sent the wrong link, it should be:

transformers/src/transformers/models/llama/modeling_llama.py

Line 473 in 2a9b1f8

target_dtype = self.config._pre_quantization_dtype

you can do something like:

if hasattr(self.config, "_pre_quantization_dtype")
    target_dtype = self.config._pre_quantization_dtype
else:
    target_dtype = layer.self_attn.o_proj.weight

Does that fixes the issue?

BlackSamorez · 2024-02-22T10:19:57Z

What you proposed seems to work fine with both FP16 and AQLM with a notebook test based off @ArthurZucker's test script.
With what other models shall I try and run it?

younesbelkada

Amazing work !
Could you add a simple test in the aqlm testing file to test that usecase 🙏

HuggingFaceDocBuilderDev · 2024-02-22T10:53:24Z

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

BlackSamorez · 2024-02-22T14:28:10Z

@younesbelkada CUDA graph generation diverges at some point:
Prefix: Hello my name is
Normal: Hello my name is Katie. I am a 20 year old college student. I am a very outgoing person. I love to have fun and be active. I am very easy going and love to make
CUDA graph: Hello my name is Katie. I am a 20 year old college student. I am a very outgoing person. I love to have fun and be active. I am a very hard worker and I

A stupid solution would be to generate shorter texts but I'm not sure if it's a good idea to have unstable tests.

P.S. As you might have guessed, I added a CUDA graph generation test for AQLM.

ArthurZucker

Looks very good to me!
Do you have any numbers to share regarding benchmakr?

ArthurZucker · 2024-02-23T08:30:44Z

+    @unittest.skipUnless(
+        is_aqlm_available() and version.parse(importlib.metadata.version("aqlm")) >= version.parse("1.0.3"),
+        "test requires `aqlm>=1.0.3`",
+    )
+    def test_quantized_model_compile(self):


Loving this test ❤️

@ArthurZucker @BlackSamorez The problem with it that it's failing :) . See this. So, advice needed on what to do here

I don't think it is super important that the outputs match for quantized models no? Distributions are the same, but kernels / ops are not run in the same order. It's small but could explain this?
Would just add a long generation and make sure it still makes sense!

I don't really know how to automatically check if text makes sense.
Alternatively, I've shortened the generation length from 40 tokens to 32 and it matches perfectly on RTX 3090, RTX 2080ti and a6000. Maybe we could just leave it as is since the tests above are exact match anyway.
(Current iteration tests pass)

fine with me 😉

younesbelkada

Amazing work @BlackSamorez !

ArthurZucker · 2024-02-27T05:56:56Z

+    @unittest.skipUnless(
+        is_aqlm_available() and version.parse(importlib.metadata.version("aqlm")) >= version.parse("1.0.3"),
+        "test requires `aqlm>=1.0.3`",
+    )
+    def test_quantized_model_compile(self):


fine with me 😉

input_layernorm as the beacon of hope

f93e730

younesbelkada reviewed Feb 19, 2024

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BlackSamorez added 2 commits February 22, 2024 11:14

cleaner dtype extraction

a956ec8

Merge branch 'main' into setup_cache_fix

042c2d5

BlackSamorez changed the title ~~Quantization support for CUDA graph generation.~~ Cleaner Cache dtype and device extraction for CUDA graph generation for quantizers compatibility Feb 22, 2024

younesbelkada approved these changes Feb 22, 2024

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younesbelkada requested a review from amyeroberts February 22, 2024 12:44

AQLM + CUDA graph test

edebc72

is available check

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ArthurZucker approved these changes Feb 23, 2024

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younesbelkada approved these changes Feb 23, 2024

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shorter text test

1c0adb8

ArthurZucker approved these changes Feb 27, 2024

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younesbelkada merged commit e3fc90a into huggingface:main Feb 27, 2024

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BlackSamorez commented Feb 17, 2024

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