PEFT LoRA Explained in Detail - Fine-Tune your LLM on your local GPU

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code_your_own_AI

code_your_own_AI

Күн бұрын

Your GPU has not enough memory to fine-tune your LLM or AI system? Use HuggingFace PEFT: There is a mathematical solution to approximate your complex weight tensors in each layer of your self-attention transformer architecture with an eigenvector and eigenvalue decomposition, that allows for a minimum memory requirement on your GPU / TPU.
The HuggingFace PEFT library stands for parameter-efficient fine-tuning of transformer models (LLM for language, Stable Diffusion for images, Vision Transformer for vision) for reduced memory size. And one method of PEFT is LoRA: Low-rank Adaptation of LLMs.
Combined with setting the pre-trained weights to non-trainable and maybe even consider a 8bit quantization of your pre-trained LLM model parameters, a reduced memory footprint of adapter-tuned transformer based LLM models achieves SOTA benchmarks, compared to classical fine-tuning of Large Language Models (like GPT, BLOOM, LLama or T5).
In this video I explain the method in detail: AdapterHub and HuggingFace's new PEFT library focus on parameter-efficient fine-tuning of transformer models (LLM for language, Stable Diffusion for images, Vision Transformer for vision) for reduced memory size.
One method, Low-rank Adaptation, I explain in detail for an optimized LoraConfig file when adapter-tuning INT8 quantization models, from LLMs to Whisper.
Follow up video: 4-bit quantization QLoRA explained and with colab Notebook:
• Understanding 4bit Qua...
#ai
#PEFT
#finetuning
#finetune
#naturallanguageprocessing
#datascience
#science
#technology
#machinelearning

Пікірлер: 88
@jett_royce
@jett_royce 2 ай бұрын
Great video that doesn't hand-wave away the mathematical and implementation details. Exactly the kind of content I love. Thank you!
@bhavulgauri7832
@bhavulgauri7832 Жыл бұрын
This is so well done. You inspired me to create similar content as well. Hats off!
@ad_academy
@ad_academy 5 ай бұрын
BEST video on PEFT and LORA..I was not able to undertsand the concepts from other videos, by searching more on YT I land up on this video and I understood whole concepts. JUST AWESOMEEEEEEE..
@ricosrealm
@ricosrealm Жыл бұрын
Superb video. Excellent presentation of all the concepts and easy to understand. You have a great teaching style sir.
@SandeepGupta1304
@SandeepGupta1304 Жыл бұрын
This is really awesome... you nailed it. Such explanation can only come from deep understanding. Thank you very much..
@changtimwu
@changtimwu Жыл бұрын
Thank you for explaining. I previously believed that LoRa was a stable diffusion generating beauty,
@uraskarg710
@uraskarg710 9 ай бұрын
Best video and explanation on LoRA, thank you for your efforts!
@Blessed-by-walking-show
@Blessed-by-walking-show Жыл бұрын
Most underrated channel on YT. Deserves a million subs. Thanks.
@code4AI
@code4AI Жыл бұрын
Appreciate that!
@alanblitzer744
@alanblitzer744 28 күн бұрын
Agreed
@Shionita
@Shionita 10 ай бұрын
I'm having so many flashbacks from my PCA classes😅, you explain much better than my teacher btw...
@Philip8888888
@Philip8888888 Жыл бұрын
This was an amazing explanation. Thank you.
@suryanshsinghrawat961
@suryanshsinghrawat961 11 ай бұрын
Best video on LORA ever! Simply can't get better than this 🏆
@code4AI
@code4AI 11 ай бұрын
My subscriber are the best!
@wilfredomartel7781
@wilfredomartel7781 Жыл бұрын
Reaaallly amazing explanation👏👏👏
@mohamedahmed-fn8qb
@mohamedahmed-fn8qb Жыл бұрын
Amazing explaining ❤️
@sk8l8now
@sk8l8now Жыл бұрын
It doesn't get better than this ❤
@gurudevilangovan
@gurudevilangovan Жыл бұрын
Thank you for the amazing video!
@wobblynl1742
@wobblynl1742 11 ай бұрын
Dude your explanations are 💯👌
@ekbastu
@ekbastu Жыл бұрын
Subscribed! Champion explanation. Thank you
@Rise2Excel-wi3gy
@Rise2Excel-wi3gy 4 ай бұрын
Top notch explanation 💯🔥
@siyuanma2323
@siyuanma2323 Жыл бұрын
Some hidden gem!
@steventan8416
@steventan8416 Жыл бұрын
very clear explaination on low-rank and LLM
@code4AI
@code4AI Жыл бұрын
Thank you.
@cedricmanouan2333
@cedricmanouan2333 9 ай бұрын
Just Wow !!! This is a great video!
@ruchaapte5124
@ruchaapte5124 29 күн бұрын
Superb video :) Very clear and concise explanation. Thank you.
@code4AI
@code4AI 29 күн бұрын
Thank you for this comment. Appreciate it if people take time for a feedback.
@ArgenisLeon
@ArgenisLeon Жыл бұрын
This is Gold. Thanks for this amazing content.
@code4AI
@code4AI Жыл бұрын
Great feedback. Thanks.
@hughding7433
@hughding7433 Жыл бұрын
讲得非常好,awesome impressive!
@proterotype
@proterotype 5 ай бұрын
Dude, you’re like a gift
@user-fb7ex8um7v
@user-fb7ex8um7v Жыл бұрын
Absolute gem
@BlueDopamine
@BlueDopamine Жыл бұрын
Nice Explanation Very Good
@debashisghosh3133
@debashisghosh3133 Жыл бұрын
Beautiful...Beautiful...
@code4AI
@code4AI Жыл бұрын
Appreciate your positive feedback! Thank you!
@user-cg6or1jk1o
@user-cg6or1jk1o Жыл бұрын
Amazing explanation!!!!
@code4AI
@code4AI Жыл бұрын
Glad you think so!
@chia-hsuanchang6609
@chia-hsuanchang6609 Жыл бұрын
Wonderful explanation!
@code4AI
@code4AI Жыл бұрын
Thank you!
@riser9644
@riser9644 Жыл бұрын
Wow awesome videos ❤
@toromanow
@toromanow 7 ай бұрын
Wunderbar. Vielen Dank.
@ianmatejka3533
@ianmatejka3533 Жыл бұрын
Outstanding video, the best one I have seen on LoRA! I have one question about the SVD decomposition procedure: A full fine tune of a large model such as LLaMa would require loading the entire model tensors onto the GPU and adjusting them by delta(phi) for all the parameters. In LoRA, delta(phi) is replaced with 2 smaller SVD matrices that are trained and then multiplied back into the full size and added to the original parameters. My question is this. When you generate the 2 smaller SVD matrices, you still need to load in the full size tensor to then decompose. In PEFT, are the 2 SVD matrices calculated once at the beginning for all the different tensors before fine tuning occurs? Also how is it possible to backpropagate through the 2 smaller matrices without combining them back together on the GPU?
@pumplove81
@pumplove81 Жыл бұрын
very thoughtful query.. forced me to read the paper :) .. basically you are right about loading the initial full sized matrices but then they are frozen for the rest of the fine tuning process and then the lower ranked / decomposed matrices kick in ..they DO NOT need to be recombined since the idea is NOT to create an exact replica of the information contained in the pre trained model. All we need is a close approximation which is provided by combining these 2 lower ranked johnnies ( U multiplied with top N ranked singular values AND Vt mult with top N ranked sv's)..and since they are both trainable , these are the weights that will then be used. So during inference, you will have the impact of both the pre trained LLM / LM and then the task specific representations of the LoRA ..this is what i have understood ..if there's a fallacy here, please do point out .. i love to be wrong ..helps better learnin
@auresdz701
@auresdz701 6 ай бұрын
@@pumplove81 Anyways we need to do feed-forward through the original model + BA. Maybe we will just have a gain not to store a lot of gradients during backprop.
@snehotoshbanerjee1938
@snehotoshbanerjee1938 Жыл бұрын
Fantastic!!
@EkShunya
@EkShunya Жыл бұрын
WoW everytime, thank you
@code4AI
@code4AI Жыл бұрын
Thank you for this feedback.
@JuanUys
@JuanUys Жыл бұрын
I'm currently looking for a resource on how to pick `modules_to_save` for LoraConfig (and perhaps the other values too, although those just seem like accuracy trade-offs too). Will update here if I can answer my own question.
@akashbhandari867
@akashbhandari867 Жыл бұрын
Great video again sir. I need some guidance from you. Let's say i have a very large text lines those are belongs to doctor's CMS dataset, their publication and clinical trials. I want to train a pretrained model with thses datasets. After request questions would looks like: who is the best urologist at New York? Can you guide to take a correct path to achieve this. Like with language model should I pick to fine tune on my data. My previous experience: 1. Langchain interface, llm=openAI and chromadb. Result are too good but openai is not a open source. 2. Same as above but this time i used llm = Dolly 2.0 12b/7b model. Result's are not accurate. They even can't count the number of paper published by doctor. So now I want to fine tune a pretrained model with my data. Can you suggest me how can achieve this. Or any better approach?
@gossipGirlMegan
@gossipGirlMegan 8 ай бұрын
Love the speed of explaination! Clean and accurate!
@sourabharsh16
@sourabharsh16 Жыл бұрын
very well explained.
@code4AI
@code4AI Жыл бұрын
Thank you for your feedback!
@mohit0901
@mohit0901 6 ай бұрын
NICE !!!
@supriyochakrabortybme
@supriyochakrabortybme Жыл бұрын
Thank You
@code4AI
@code4AI Жыл бұрын
You are welcome.
@johnosborne6175
@johnosborne6175 Жыл бұрын
Great presentation! A nomenclature question for you, in Figure 1 in the LoRA paper they have "B=0" and "A=Nu(0,sigma^2). I'm not sure how that relates to the description of A and B, can you give any insight?
@johnosborne6175
@johnosborne6175 Жыл бұрын
I'll answer my own question - it looks like the Figure 1 is just showing initialization. I had forgotten that N is the symbol for the Gaussian distribution, so it is just saying they are initializing A with a Gaussian distribution with a mean of 0 and initialization B = 0 since the initial delta for weights is zero at the start of training.
@paturibharath7948
@paturibharath7948 Жыл бұрын
outstanding video. Brilliantly explained complex topics.. I have one question, Can we do Lora to multi modal architectures like Donut which is a combination of Swing transformer + Bard ? Any pointers to do this
@code4AI
@code4AI Жыл бұрын
If you have access to Bard, to inject additional tensors, and then fine-tune Bard, on its compute infrastructure, you work for Google and know the answer to your question.
@davidromero1373
@davidromero1373 9 ай бұрын
Hi a question, can we use lora to just reduce the size of a model and run inference, or we have to train it always?
@BradleyKieser
@BradleyKieser 9 ай бұрын
Absolutely brilliantly explained. Love this guy's style of teaching and his casual humour. Do we have to drop to int8 for PEFT?
@avinashkaur1406
@avinashkaur1406 Жыл бұрын
Such great content! Is it possible to get the slides? Thanks!
@ko-Daegu
@ko-Daegu Жыл бұрын
what tool r u using for the presentation i love the smooth transitions
@sayhellojoel
@sayhellojoel Жыл бұрын
Thanks for the great video! Is OpenAI using adapters or a similar technology for the fine-tuning they offer on GPT-3 base models?
@code4AI
@code4AI Жыл бұрын
I have not seen any official documentation by the company about this ...
@digitalsoultech
@digitalsoultech Жыл бұрын
Open AI are not releasing how they are trained the AI
@faisalq4092
@faisalq4092 Жыл бұрын
does it work on models i trained using tf? or just the models imported from the hugging face library?
@666kaotik666
@666kaotik666 Жыл бұрын
kudos
@alealejandroooooo
@alealejandroooooo Жыл бұрын
Subscribed.
@code4AI
@code4AI Жыл бұрын
Appreciate it!
@xidian2008
@xidian2008 9 ай бұрын
where can I download the PPTs
@TL-fe9si
@TL-fe9si Жыл бұрын
Comment for the algorithm👏
@jakeh1829
@jakeh1829 Жыл бұрын
Hi boss, I have a question: If I finetune 4 LoRA models based on an LLM (e.g. Llama13b), each LoRA trained on a specific task. Can I deploy all the 5 models on the same GPU (includes the parameters of 4 LoRAs and the base model)? For example, let's suppose each adapter takes 0.5GB vram and the base model takes 26GB vram on the GPU; is it possible to deploy all sets of LoRAs and the base model on the same GPU with the usage of 28GB? (26+0.5*4=28GB)
@jaskiratsinghsodhi
@jaskiratsinghsodhi 11 ай бұрын
The deployment framework needs to provide this support. technically saying this should be possible if the architecture supports switching instead of just sequentially calculating Not sure if such support exists in any framework. But then again I don't have knowledge of all frameworks.
@KA-kp1me
@KA-kp1me Жыл бұрын
hmm, so assuming I have a model X with multiple lora adapters trained on specific tasks. Is it possible to merge all those adapters back to single model? Just curious :)
@code4AI
@code4AI Жыл бұрын
Yes.
@user-pe7wp9eg2n
@user-pe7wp9eg2n 11 ай бұрын
Every matrix can be represented as a product of matrices BA. Could this be used to compress models?
@krittaprottangkittikun4190
@krittaprottangkittikun4190 6 ай бұрын
Just my guess, I think you might be able to compress the models for storage but when you actually want to do inference you need to decompress it before use.
@echofloripa
@echofloripa 11 ай бұрын
You lost me at the linear algebra, I decided I will abstract that part 🤣
@auresdz701
@auresdz701 6 ай бұрын
I still do not understand how LORA preserves previous information of the original dataset? Lets say our base model is a bert trained on wikipedia, when using LORA, lets consider the first block of attention, we feed forward the input features to the original weights and to the BA matrix, then we add the two results. In this way the next layer inputs are changed whereas the weights in the next layers expects something else. I still don't get it.
@keshav2136
@keshav2136 Жыл бұрын
👍🏻
@fire17102
@fire17102 Жыл бұрын
First 🦄
@oorcinus
@oorcinus Жыл бұрын
Quantification and quantization are two very different things.
@code4AI
@code4AI Жыл бұрын
Quantization is the mapping of a k-bit integer to a real element in Domain D, or (1) Compute a normalization constant N that transforms the input tensor T into the range of the domain D of the target quantization data type Q, (2) for each element of T/N find the closest corresponding value q(i) in the domain D, (3) store the index i corresponding to q(i) in the quantized output tensor T(Q). That is so easy in information theory, that when I compare it to real physics, I smile and think of it as a singular quantification problem. And beliefs manifest themselves in language. Good point!
@oorcinus
@oorcinus Жыл бұрын
@@code4AI Well, FWIW, quantization sort of just happens in real physics, if you go far enough ;)
@dyjiang1350
@dyjiang1350 Жыл бұрын
You spend a lot of time talk about SVD, how does it related to LoRA, does Lora use SVD in it algorithm?
@jaskiratsinghsodhi
@jaskiratsinghsodhi 11 ай бұрын
Thats what he tried to show as far as I understood, the equations for decomposition are the same.
@efexzium
@efexzium 8 ай бұрын
letters and voice is one of the best ways to confuse an audience. There is plenty of studies that prove this the brain can only do one thing at a time.
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