Best gpu for llama 2 7b. 98 token/sec on CPU only, 2.
Best gpu for llama 2 7b 3M GPU hours of computation on hardware of type A100-80GB (TDP of 350-400W). Full precision didn't load. Good inference speed in AutoGPTQ and GPTQ-for-LLaMa. 4xlarge instance: Llama 2. 31 tokens/sec partly offloaded to GPU with -ngl 4 I started with Ubuntu 18 and CUDA 10. It isn't clear to me whether consumers can cap out at 2 NVlinked GPUs, or more. Occasionally I'll load up a 7b model Nous Hermes Llama 2 7B - GGML Model creator: NousResearch; Original model: Nous Hermes Llama 2 7B; GGML files are for CPU + GPU inference using llama. This list can help. 85 tokens/s |50 output tokens |23 input tokens Llama-2-7b-chat-GPTQ: 4bit-128g Llama 2 7B Chat - GGUF Model creator: Meta Llama 2; Original model: Llama 2 7B Chat; KoboldCpp, a fully featured web UI, with GPU accel across all platforms and GPU architectures. This is the repository for the 7B pretrained model, converted for the Hugging Face Transformers format. 6 RPS, the latency increases drastically which means requests are being queued up. This is a finetuned LLMs with human-feedback and optimized for dialogue use cases based on the 7-billion parameter Llama-2 pre-trained model. All using CPU inference. 2 and 2-2. 1. Controversial Llama 2-chat ended up performing the best after three epochs on 10000 Fine-tuning LLMs like Llama-2-7b on a single GPU The use of techniques like parameter-efficient tuning and quantization Training a 7b param model on a single T4 GPU (QLoRA) Best Latency Deployment: Minimizing latency for real-time services We can see that GPTQ offers the best cost-effectiveness, allowing customers to deploy Llama 2 13B on a single GPU. Time: total GPU time required for training each model. Resources To those who are starting out on the llama model with llama. 2, but the same thing happens after upgrading to Ubuntu 22 and CUDA 11. 06 from NVIDIA NGC. You'll need to stick to 7B to fit onto the 8gb gpu Under Download custom model or LoRA, enter TheBloke/Llama-2-7b-Chat-GPTQ. Then starts then waiting part. 1 -n -1 -p "{prompt}" Change -ngl 32 to the number of layers to offload to GPU. gguf. The Llama 2-Chat model deploys in a custom container in the OCI Data Science service using the model deployment feature for online inferencing. More posts you may like r/LocalLLaMA. The second difference is the per-GPU power consumption cap — RSC uses 400W while our production cluster uses 350W. From a dude running a 7B model and seen performance of 13M models, I would say don't. Model Details Update: Interestingly, when training on the free Google Colab GPU instance w/ 15GB T4 GPU, I am observing a GPU memory usage of ~11GB. (Commercial entities could do 256. Power your AI workloads with the RTX A4000 VPS, designed for optimal performance and efficiency. More posts you may like r/RedMagic. LLaMA 2. We hope the benchmark will In this repository we are introducing a new member of NSQL, NSQL-Llama-2-7B. We hope the benchmark will Reason being it'll be difficult to hire the "right" amount of GPU to match you SaaS's fluctuating demand. This chart showcases a range of benchmarks for GPU performance while running large language models like LLaMA and Llama-2, using various quantizations. gguf --color -c 4096 --temp 0. Llama The unquantized Llama 2 7b is over 12 gb in size. 1 -n -1 -p "Below is an instruction that describes a task. Llama-2-7B-32K-Instruct is an open-source, long-context chat model finetuned from Llama-2-7B-32K, over [Edited: Yes, I've find it easy to repeat itself even in single reply] I can not tell the diffrence of text between TheBloke/llama-2-13B-Guanaco-QLoRA-GPTQ with chronos-hermes-13B-GPTQ, except a few things. Subreddit to discuss about Llama, the large language model created by Meta AI. To download from a specific branch, enter for example TheBloke/llama-2-7B-Guanaco-QLoRA-GPTQ:main; see Provided Files Heres my result with different models, which led me thinking am I doing things right. Share Sort by: Best. This paper looked at 2 bit-s effect and found the difference between 2 bit, 2. More posts you may like r/OpenAI. I generally grab The Bloke's quantized Llama-2 70B models that are in the 38GB range or his 8bit 13B models. I was using K80 GPU for Llama-7B-chat but it's not work for me it's take all the resources from it. 8 system_message = '''### System: You are an expert image prompt designer. 00 seconds |1. While best practices for comprehensively evaluating a generative model is an open research question, the Run Llama 2 70B on Your GPU with ExLlamaV2 Notes. co Open. Also, CPU’s are just not good at doing floating point math compared to GPU’s. To get 100t/s on q8 you would need to have 1. 's LLaMA-2-7B-32K and Llama-2-7B-32K-Instruct models and uploaded them in GGUF format - ready to be used with llama. Add a comment | 0 Here are hours spent/gpu. For Best Performance: Opt for a machine with a high-end GPU (like NVIDIA's latest RTX 3090 or RTX 4090) or dual GPU setup to accommodate the largest models (65B Hence, for a 7B model you would need 8 bytes per parameter * 7 billion parameters = 56 GB of GPU memory. It allows for GPU acceleration as well if you're into that down the road. GGML files are for CPU + GPU inference using llama. There are some great open box deals on ebay from trusted sources. One fp16 parameter weighs 2 bytes. I know the Raspberry Pi 4 can run llama 7b, so I figure at double the ram and onboard NPU's, Orange Pi 5 should be pretty solid. 02 tokens per second I also tried with LLaMA 7B f16, and the timings again show a slowdown when the GPU is introduced, eg 2. With the optimizers of For a detailed overview of suggested GPU configurations for fine-tuning LLMs with various model sizes, precisions and fine-tuning techniques, refer to the table below. 6 RPS without a significant drop in latency. r/buildapc. So, you might be able to run a 30B model if it's quantized at Q3 or Q2. 7B model was the biggest I could run on the GPU (Not the Meta one as the 7B need more then 13GB memory on the graphic card), but you can actually use Quantization technic to make the model smaller, just to compare the sizes before and after (After quantization 13B was running smooth). Use the from_pretrained` method from the `AutoModelForCausalLM` class to load a pre-trained Hugging Face model in 4-bit precision using the model name and the Nytro. Estimated total emissions were 539 tCO2eq, 100% of which were offset by Meta’s sustainability program. but it’s also the kind of overpowered hardware that you need to handle top end models such as 70b Llama 2 with ease. This is the repository for the 7B fine-tuned model, optimized for dialogue use cases and converted for the Hugging Face Transformers format. Minstral 7B works fine on inference on 24GB RAM (on my NVIDIA rtx3090). Llama-2-7b-chat-hf: Prompt: "hello there" Output generated in 27. NeMo Framework offers support for various parameter-efficient fine-tuning (PEFT) methods for Llama 2 model family. Once it's finished it will say "Done". Loading Llama 2 70B requires 140 GB of memory (70 billion * 2 bytes). You need 2 x 80GB GPU or 4 x 48GB GPU or 6 x 24GB GPU to run fp16. We were able to successfully fine-tune the Llama 2 7B model on a single Nvidia’s A100 40GB CO 2 emissions during pretraining. My local environment: OS: Ubuntu 20. Test Setup. Remove it if you don't have GPU acceleration. devyy devyy devyy devyy. The user will send you examples of image prompts, and then you invent one more. 7 --repeat_penalty 1. The largest and best model of the Llama 2 family has 70 billion parameters. Best Latency Deployment: Minimizing latency for real-time services We can see that GPTQ offers the best cost-effectiveness, allowing customers to deploy Llama 2 13B on a single GPU. , TheBloke/Llama-2-7B-chat-GPTQ - on a system with a single NVIDIA GPU? It would be great to see some example code in Python on how to do it, if it is feasible at all. With CUBLAS, -ngl 10: 2. The size of Llama 2 70B fp16 is around 130GB so no you can't run Llama 2 70B fp16 with 2 x 24GB. Set the maximum GPU memory. We further measured the GPU memory usage for each scenario. Developer: Meta AI Parameters: Variants ranging from 7B to 70B parameters Pretrained on: A diverse dataset compiled from multiple sources, focusing on quality and variety Fine-Tuning: Supports fine-tuning on specific datasets for enhanced performance in niche tasks License Type: Open-source with restrictions on commercial use Features: High With the release of Meta’s Llama 3. Llama 2 is a collection of pretrained and fine-tuned generative text models ranging in scale from 7 billion to 70 billion parameters. 8 Under Download custom model or LoRA, enter TheBloke/llama-2-7B-Guanaco-QLoRA-GPTQ. Power Consumption: peak power capacity per GPU device for the GPUs used adjusted for power usage efficiency. Improve this answer. More. Nytro. We were able to successfully fine-tune the Llama 2 7B model on a single Nvidia’s A100 40GB GPU and will provide a deep dive on how to configure the software environment to run the fine-tuning flow on Dell PowerEdge R760xa 8-bit Lora Batch size 1 Sequence length 256 Gradient accumulation 4 That must fit in. Llama 2 7B Arguments - AWQ Model creator: Cristian Desivo; Original model: Llama 2 7B Arguments; Description This repo contains AWQ model files for Cristian Desivo's Llama 2 7B Arguments. TheBloke/Llama-2-7b-Chat-GPTQ · Hugging Face. cpp or other similar models, you may feel tempted to purchase a used 3090, 4090, or an Apple M2 to run these models. So, maybe it is possible to QLoRA fine-tune a 7B model with 12GB VRAM! Original model card: Meta Llama 2's Llama 2 7B Chat Llama 2. cpp and libraries and UIs which support this format, such as: LM Studio is a good choice for a chat interface that supports GGML versions (to come) I have RTX 4090 (24G) , i've managed to run Llama-2-7b-instruct-hf on GPU only with half precision which used ~13GB of GPU RAM. The Llama 2 language model represents Meta AI’s latest advancement in large language models, boasting a 40% performance boost and increased data size compared to its predecessor, Llama 1. ExLlama : Dolphin-Llama2-7B-GPTQ Full GPU >> Output: 42. Then we deployed those models into Dell server and measured their performance. cpp as the model loader. If you infer at batch_size = 1 on a model like Llama 2 7B on a "cheap" GPU like a T4 or an L4 it'll use about 100% of the compute, which means you get no benefit from batching. We note that reward model accuracy is one of the most important proxies for the final performance of Llama 2-Chat. But let’s face it, the average Joe building RAG applications isn’t confident in their ability to fine-tune an LLM — training data are hard to collect . Model Quantization Instance concurrent requests Latency (ms/token) median 7B Llama 2 achieved 16ms per token on ml. To achieve 139 tokens per second, we required only a single A100 GPU for optimal performance. KoboldCpp, a fully featured web UI, with GPU accel across all platforms and GPU architectures. New Pure GPU gives better inference speed This shows the suggested LLM inference GPU requirements for the latest Llama-3-70B model and the older Llama-2-7B model. r/ChatGPT. I recommend getting at least 16 GB RAM so you can run other programs alongside the LLM. Share. 100% of the LLMs are GPU compute-bound. Based on LLaMA WizardLM 7B V1. 3 already came out). This document describes how to deploy and run inferencing on a Meta Llama 2 7B parameter model using a single NVIDIA A100 GPU with 40GB memory. Power Consumption: peak power capacity per GPU device for the GPUs used adjusted for I know the "best" can be a bit subjective so I think the better question is, what 7b model do people use the most nowaday? GGML format would be best on my case. Discover the best GPU VPS for Ollama at GPUMart. Also, the RTX 3060 If inference speed and quality are my priority, what is the best Llama-2 model to run? 7B vs 13B 4bit vs 8bit vs 16bit GPTQ vs GGUF vs bitsandbytes Share Sort by: Best. 6 bit and 3 bit was quite significant. Follow answered Dec 16, 2023 at 15:53. With that kind of budget you can easily do this. Set n-gpu-layers to max, n_ctx to 4096 and usually that should be enough. I installed Ubuntu 22. The model will start downloading. With -sm row, the dual RTX 3090 demonstrated a higher inference speed of 3 tokens per second (t/s), whereas the dual RTX 4090 With RLHF, the primary performance metric used during training is monotonic increases in the reward from the preference model. and make sure to offload all the layers of the Neural Net to the GPU. Results We swept through compatible combinations of the 4 variables of the experiment and present the most insightful trends below. g. Training Data The general SQL queries are the SQL subset from The Stack, containing 1M training Just to let you know: I've quantized Together Computer, Inc. You can use a 4-bit quantized model of about 24 B. can be used to fine-tune Llama 2 7B model on single GPU. I think it might allow for API calls as well, but don't quote me on that. Use this !CMAKE_ARGS="-DLLAMA_CUBLAS=on" FORCE_CMAKE=1 pip install llama-cpp-python. 875 (0. 2-2. 7B: 184320 13B: 368640 70B: 1720320 Top 1% Rank by size . r/OpenAI Llama 2 7B - GGML Model creator: Meta; Original model: Llama 2 7B; GGML files are for CPU + GPU inference using llama. 14 t/s (134 tokens, context 780) vram ~8GB LLM360 has released K2 65b, a fully reproducible open source LLM matching Llama 2 70b upvotes Best GPU for 1440P (3440x1440)? KoboldCpp, a fully featured web UI, with GPU accel across all platforms and GPU architectures. Best. 1 GPTQ 4bit runs well and fast, but some GGML models with 13B 4bit/5bit quantization are also good. Best gpu models are those with high vram (12 or up) I'm struggling on 8gbvram 3070ti for instance My big 1500+ token prompts are processed in around a minute and I get ~2. The model under investigation is Llama-2-7b-chat-hf [2]. Not affiliated with OpenAI. Both have been trained with a context length of 32K - and, provided that you have enough RAM, you can benefit from such large contexts right away! I am wondering if the 3090 is really the most cost effectuent and best GPU overall for inference on 13B/30B parameter model. LM Studio, This ends up preventing Llama 2 70B fp16, whose weights alone take up 140GB, from comfortably fitting into the 160GB GPU memory available at tensor parallelism 2 (TP-2). . 55 LLama 2 70B to Q2 LLama 2 70B and see just what kind of difference that makes. Write a response that appropriately completes the The smallest Llama 2 chat model is Llama-2 7B Chat, with 7 billion parameters. New. If you use AdaFactor, then you need 4 bytes per parameter, or 28 GB of GPU memory. It's based on Meta's original Llama-2 7B model and further pre-trained on a dataset of general SQL queries and then fine-tuned on a dataset composed of text-to-SQL pairs. But you can run Llama 2 70B 4-bit GPTQ on 2 x 24GB and many people are doing this. Links to other models can be found in the index at the bottom. 5 LTS Hardware: CPU: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2. Then click Download. So I made a quick video about how to deploy this model on an A10 GPU on an AWS EC2 g5. 04. Open comment sort options. koboldcpp. Llama 2. q4_K_S. It is actually even on par with the LLaMA 1 34b model. exe --model "llama-2-13b. You excel at inventing new and unique prompts for generating images. with ```···--alpha_value 2 - The Mistral 7b AI model beats LLaMA 2 7b on all benchmarks and LLaMA 2 13b in many benchmarks. --model_name_or_path llama2/Llama-2-7b-hf \ --do_train \ --dataset alpaca_gpt4_en \ --finetuning_type full \ not FSDP, so you have to fit the whole model into every gpu. 5. 4GB, performs efficiently on the RTX A4000, delivering a prompt evaluation rate of 63. 2, fine-tuning large language models to perform well on targeted domains is increasingly feasible. /main -ngl 32 -m nous-hermes-llama-2-7b. The data covers a set of GPUs, from Apple Silicon M series chips to Nvidia GPUs, helping you make an informed decision if you’re considering using a large language model locally. 2 to elevate its performance on specific tasks, making it a powerful tool for machine learning engineers and data scientists looking to specialize their models. 04 For the dual GPU setup, we utilized both -sm row and -sm layer options in llama. Click Download. More posts you may like r/buildapc. Go big (30B+) or go home. If that happens you need to request another unique url. Carbon Footprint Pretraining utilized a cumulative 3. LM Studio, a fully featured local GUI with GPU acceleration on both Windows (NVidia and AMD), and macOS. Persisting GPU issues, white VGA light on mobo with two different RTX4070 cards Llama 2 7B - GPTQ Model creator: Meta; Original model: Llama 2 7B; Description Multiple quantisation parameters are provided, to allow you to choose the best one for your hardware and requirements. Make sure you grab the GGML version of your model, I've been liking Nous Hermes Llama 2 We can observe in the above graphs that the Best Response Time (at 1 user) is 2 seconds. Share NVLink for the 30XX allows co-op processing. I In text-generation-web-ui: Under Download Model, you can enter the model repo: TheBloke/Llama-2-70B-GGUF and below it, a specific filename to download, such as: llama-2-70b. 8 on llama 2 13b q8. Top 2% Rank by size . This encounters two immediate issues: a) the reward models we're using are incomplete and There is a big quality difference between 7B and 13B, so even though it will be slower you should use the 13B model. Hey I am searching about that which is suite able GPU for llama-2-7B-chat & llama-2-70B-chat for run the model in live server. In my case, the RTX 2060 has compute capability 7. bin" --threads 12 --stream. It would be interesting to compare Q2. The exception is the A100 GPU which does not use 100% of GPU compute and therefore you get benefit from batching, but is hella expensive. ggmlv3. Check with nvidia-smi command how much you have headroom and play with parameters until VRAM is 80% occupied. 27 lower) LLaMA-7b I'm interested to see if 70b can be quantized on a 24GB gpu. About AWQ AWQ is an efficient, accurate and blazing-fast low-bit weight quantization method, currently supporting 4-bit quantization. Lit-GPT is a similar repo that does support FSDP, but its much more messy than this one. . /orca_mini_v3_7B-GPTQ" temperature = 0. Reply reply Top 1% Rank by size . 3(As 13B V1. Thanks in advance for your insights! Edit: Im using Text-generation-webui with max_seq_len 4096 and alpha_value 2. It’s a powerful and accessible LLM for fine-tuning because with fewer parameters it is an ideal candidate for In this blog post, we deploy a Llama 2 model in Oracle Cloud Infrastructure (OCI) Data Science Service and then take it for a test drive with a simple Gradio UI chatbot client application. Q4_K_M. A Mad Llama Trying Fine-Tuning. Tried llama-2 7b-13b-70b and variants. Top. LLaMA-2-7b: Transformers 16-bit 5. cpp and libraries and UIs which support this format, such as: (CUDA and OpenCL). Original model card: Meta's Llama 2 7b Chat Llama 2. We can increase the number of users to throw more traffic at the model - we can see the throughput increasing till 3. /main -ngl 32 -m llama-2-7b. Though, there are ways to improve your performance on CPU, namely by understanding how different converted models work. 2, in my use-cases at least)! And from what I've heard, the Llama 3 70b model is a total beast (although it's way too big for me to even try). If you really must though I'd suggest wrapping this in an API and doing a hybrid local/cloud setup to minimize cost while having ability to scale. With a 4090rtx you can fit an entire 30b 4bit model assuming your not running --groupsize 128. cpp. 2. I went with the Plus version. 12xlarge. up RunPod and running a basic Llama-2 7B model GPU memory consumed Platform Llama 2-7B-chat FP-16 1 x A100-40GB 14. ) I don't have any useful GPUs yet, so I can't verify this. 98 token/sec on CPU only, 2. Otherwise you have to close them all to reserve 6-8 GB RAM for a 7B model to run without slowing down from swapping. 91 tokens per second. 08 GiB PowerEdge R760xa Deploy the model For this experiment, we used Pytorch: 23. 0 Uncensored is the best one IMO, though it can't compete with any Llama 2 fine tunes Waiting for WizardLM 7B V1. 60GHz Memory: 16GB GPU: RTX 3090 (24GB). To download from a specific branch, enter for example TheBloke/Llama-2-7b-Chat-GPTQ:gptq-4bit-64g-actorder_True; see Provided Files above for the list of branches for each option. This model showcases the plan's ability to handle Orange Pi 5 Series is probably your best bang for buck as a SBC that can run a model. Especially good for This makes the models very large and difficult to store in either system or GPU RAM. So do let KoboldCpp, a fully featured web UI, with GPU accel across all platforms and GPU architectures. 4-bit quantization will increase inference speed quite a bit with hardly any Only 30XX series has NVlink, that apparently image generation can't use multiple GPUs, text-generation supposedly allows 2 GPUs to be used simultaneously, whether you can mix and match Nvidia/AMD, and so on. 3. 5-4. q4_K_M. LLM360 has released K2 65b, a fully reproducible open source LLM matching Llama 2 70b It mostly depends on your ram bandwith, with dual channel ddr4 you should have around 3. Llama-2-7B-32K-Instruct is an open-source, Hello everyone,I'm currently running Llama-2 70b on an A6000 GPU using Exllama, and I'm achieving an average inference speed of 10t/s, with peaks up to 13t/s. Free GPU options for LlaMA model experimentation . 5 TB/s bandwidth on GPU dedicated entirely to the model on highly optimized backend (rtx 4090 have just under 1TB/s but you can get like 90-100t/s with mistral 4bit GPTQ) In 8 GB RAM and 16 GB RAM laptops of recent vintage, I'm getting 2-4 t/s for 7B models, 10 t/s for 3B and Phi-2. So 13B should be good on 3080/3090. Maybe there's some optimization under the hood when I train with the 24GB GPU, that increases the memory usage to ~14GB. The unique link is only good for 24 hours and you can only use it so many times. SqueezeLLM got strong results for 3 bit, but interestingly decided not to push 2 bit. 5 on mistral 7b q8 and 2. You can use an 8-bit quantized model of about 12 B (which generally means a 7B model, maybe a 13B if you have memory swap/cache). A100 40GB GPU Nytro. RunPod is a cloud GPU platform that allows you to run ML models at affordable prices without having to secure or manage a physical GPU. The container Posted by u/plain1994 - 106 votes and 21 comments Is it possible to fine-tune GPTQ model - e. This article provides a comprehensive guide on fine-tuning Llama 3. or best practices that could help me boost the performance. 1,200 tokens per second for Llama 2 7B on H100! Discussion I don't think anything involving a $30k GPU is that relevant for personal use, or really needs to be posted in a sub about local inference. Llama 2: Inferencing on a Single GPU Executive Honestly, I'm loving Llama 3 8b, it's incredible for its small size (yes, a model finally even better than Mistral 7b 0. 4 tokens generated per second for replies, though things slow down as the chat goes on. But in order to want to fine tune the un quantized model how much Gpu memory will I need? 48gb or 72gb or 96gb? does anyone have a code or a YouTube video tutorial to The previous generation of NVIDIA Ampere based architecture A100 GPU is still viable when running the Llama 2 7B parameter model for inferencing. Install the NVIDIA-container toolkit for the docker container to use the system GPU. 3 top_k = 250 top_p = 0. It's gonna be complex and brittle though. Use llama. Still, it might Run Llama 2 model on your local environment. Hugging Face recommends using 1x Nvidia To keep this simple, the easiest way right now is to ensure you have an NVIDIA GPU with at least 6GB of VRAM that is CUDA compatible. More posts you may like r/ChatGPT. This shows the suggested GPU for the latest Llama-3 -70B In this post, I’ll guide you through the minimum steps to set up Llama 2 on your local machine, assuming you have a medium-spec GPU like the RTX 3090. The Qwen2:7b model, with a size of 4. I am using A100 80GB, but still I have to wait, like the previous 4 days and the next 4 days. ai uses technology that works best in other browsers. Especially good for story telling. You can use a 2-bit quantized model to about 48G (so many 30B models). I could do 64B models. Beyond 3. Model card: Meta's Llama 2 7B Llama 2. GPU Recommended for Fine-tuning LLM. r/LocalLLaMA. According to open leaderboard on HF, Vicuna 7B 1. Install the packages in the container using the commands below: LLaMA-2-7B-32K by togethercomputer New Model huggingface. g5. Worked with I've been trying to try different ones, and the speed of GPTQ models are pretty good since they're loaded on GPU, however I'm not sure which one would be the best option for what purpose. For a detailed overview of suggested GPU configurations model = ". 36 1 1 bronze badge. Personally I think the MetalX/GPT4-x-alpaca 30b model destroy all other models i tried in logic and it's quite good at both chat and notebook mode. To give you a point of comparison, when I benchmarked Llama 2 7B quantized to 4-bit with GPTQ The following resources reference different checkpoints of the Llama 2 family of models, but can be easily modified to apply to Llama 2 7B by changing the reference to the model! P-Tuning and LoRA. As you can see the fp16 original 7B model has very bad performance with the same input/output. 70b Llama 2 is competitive with the free-tier of ChatGPT Original model card: Meta's Llama 2 7B Llama 2. Subreddit to discuss about ChatGPT and AI. flo smjwqsov ufkovi bgrb ajk zzla kckklc fxpgvb bytui mwy