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Merge pull request #122 from kvcache-ai/feat-DeepSeekV3
[Feat] add support to DeepSeekV3
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# GPT-4/o1-level Local VSCode Copilot on a Desktop with only 24GB VRAM | ||
# SUMMARY | ||
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> **Fed 10, 2025**: Support DeepseekR1 and V3 on single (24GB VRAM)/multi gpu and 382G DRAM, up to 3~64x speedup.<br> | ||
Hi, we're the KTransformers team (formerly known for our local CPU/GPU hybrid inference open source project with DeepSeek-V2). | ||
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We've heard your requests for DeepSeek-R1/V3 support—and we're excited to finally deliver! | ||
Apologies for the wait, but we've been cooking up something truly amazing! | ||
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Today, we're proud to announce that we not only support DeepSeek-R1/V3, as showcased in the video below: | ||
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https://github.com/user-attachments/assets/ebd70bfa-b2c1-4abb-ae3b-296ed38aa285 | ||
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</p> | ||
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- **[NEW!!!] Local 671B DeepSeek-Coder-V3/R1:** Running its Q4_K_M version using only 14GB VRAM and 382GB DRAM. | ||
- Prefill Speed (tokens/s): | ||
- KTransfermor: 54.21 (32 cores) → 74.362 (dual-socket, 2×32 cores) → 255.26 (optimized AMX-based MoE kernel, V0.3 only) → 286.55 (selectively using 6 experts, V0.3 only) | ||
- Compared to 4.51 tokens/s in llama.cpp with 2×32 cores, achieving up to **63.53× speedup**. | ||
- Decode Speed (tokens/s): | ||
- KTransfermor: 8.73 (32 cores) → 11.26 (dual-socket, 2×32 cores) → 13.69 (selectively using 6 experts, V0.3 only) | ||
- Compared to 4.51 tokens/s in llama.cpp with 2×32 cores, achieving up to **3.03× speedup**. | ||
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We also give our upcoming optimizations previews, including an Intel AMX-accelerated kernel and a selective expert activation method, which will significantly enhance performance. With V0.3-preview, we achieve up to 286 tokens/s for prefill, making it up to **64× faster than llama.cpp** for local inference. | ||
The binary distribution is available now and the source code will come ASAP! Check out the wheel package [here](https://github.com/kvcache-ai/ktransformers/releases/download/v0.1.4/ktransformers-0.3.0rc0+cu126torch26fancy-cp311-cp311-linux_x86_64.whl) | ||
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## Prerequisites | ||
We run our best performance tests (V0.2) on <br> | ||
CPU: Intel (R) Xeon (R) Gold 6454S 1T DRAM (2 NUMA nodes) <br> | ||
GPU: 4090D 24G VRAM <br> | ||
## Bench Result | ||
### V0.2 | ||
#### Settings | ||
- Model: DeepseekV3-q4km (int4)<br> | ||
- CPU: cpu_model_name: Intel (R) Xeon (R) Gold 6454S, 32 cores per socket, 2 sockets, 2 numa nodes | ||
- GPU: 4090D 24G VRAM | ||
- We test after enough warm up | ||
#### Memory consumption: | ||
- Single socket: 382G DRAM, at least 14GB VRAM | ||
- Dual socket: 1T DRAM, at least 14GB VRAM | ||
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#### Benchmark Results | ||
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"6 experts" case is part of V0.3's preview | ||
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| Prompt<br>(500 tokens) | Dual socket Ktrans (6 experts) | Dual socket Ktrans (8 experts) | Single socket Ktrans (6 experts) | Single socket Ktrans (8 experts)| llama.cpp (8 experts) | | ||
| --- | --- | --- | --- | --- | --- | | ||
| Prefill token/s | 97.32 | 82.94 | 65.14 | 54.21 | 10.31 | | ||
| Decode token/s | 13.69 | 12.208 | 10.303 | 8.73 |4.51 | | ||
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**The highest speedup reaches up to <u>3.03x</u> in decoding and <u>9.44x</u> in prefill.** | ||
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### V0.3-Preview | ||
#### Settings | ||
- Model: DeepseekV3-BF16 (online quant into int8 for CPU and int4 for GPU) | ||
- CPU: cpu_model_name: Intel (R) Xeon (R) Gold 6454S, 32 cores per socket, 2 socket, 2 numa nodes | ||
- GPU: (1~4)x 4090D 24GVRAM (requires more VRAM for longer prompt) | ||
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#### Memory consumptions: | ||
- 644GB DRAM, at least 14GB VRAM | ||
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#### Benchmark results | ||
| Prompt length | 1K | 2K | 4K | 8K | | ||
|---------------|-----|-----|-----|-----| | ||
| KTrans (8 experts) Prefill token/s | 185.96 | 255.26 | 252.58 | 195.62 | | ||
| KTrans (6 experts) Prefill token/s | 203.70 | 286.55 | 271.08 | 207.20 | | ||
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**The prefill of KTrans V0.3 is up to <u>3.45x</u> times faster than KTrans V0.2, and is up to <u>63.53x</u> times faster than llama.cpp.** | ||
**The decoding speed is the same as KTrans V0.2 (6 experts version) so it is omitted** | ||
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The main acceleration comes from | ||
- Intel AMX instruction set and our specially designed cache friendly memory layout | ||
- Expert selection strategy that selects fewer experts based on offline profile results of out of domain data | ||
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*From our research on DeepSeekV2, DeepSeekV3 and DeepSeekR1, | ||
when we slightly decrease the activation experts num in inference, | ||
the output quality doesn't change. But the speed of decoding and prefill | ||
is speed up which is inspiring. So our showcase makes use of this finding* | ||
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## How to Run | ||
### V0.2 Showcase | ||
#### Single socket version (32 cores) | ||
Our local_chat test command is: | ||
``` shell | ||
git clone https://github.com/kvcache-ai/ktransformers.git | ||
cd ktransformers | ||
numactl -N 1 -m 1 python ./ktransformers/local_chat.py --model_path <your model path> --gguf_path <your gguf path> --prompt_file <your prompt txt file> --cpu_infer 33 --cache_lens 1536 | ||
<when you see chat, then press enter to load the text prompt_file> | ||
``` | ||
\<your model path\> can be local or set from online hugging face like deepseek-ai/DeepSeek-V3. If online encounters connection problem, try use mirror (hf-mirror.com) <br> | ||
\<your gguf path\> can also be online, but as its large we recommend you download it and quantize the model to what you want <br> | ||
The command numactl -N 1 -m 1 aims to advoid data transfer between numa nodes | ||
#### Dual socket version (64 cores) | ||
Make suer before you install (use install.sh or `make dev_install`), setting the env var `USE_NUMA=1` by `export USE_NUMA=1` (if already installed, reinstall it with this env var set) <br> | ||
Our local_chat test command is: | ||
``` shell | ||
git clone https://github.com/kvcache-ai/ktransformers.git | ||
cd ktransformers | ||
export USE_NUMA=1 | ||
make dev_install # or sh ./install.sh | ||
python ./ktransformers/local_chat.py --model_path <your model path> --gguf_path <your gguf path> --prompt_file <your prompt txt file> --cpu_infer 65 --cache_lens 1536 | ||
<when you see chat, then press enter to load the text prompt_file> | ||
``` | ||
The parameters' meaning is the same. But As we use dual socket, we set cpu_infer to 65 | ||
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### V0.3 Showcase | ||
#### Dual socket version (64 cores) | ||
Our local_chat test command is: | ||
``` shell | ||
wget https://github.com/kvcache-ai/ktransformers/releases/download/v0.1.4/ktransformers-0.3.0rc0+cu126torch26fancy-cp311-cp311-linux_x86_64.whl | ||
pip install ./ktransformers-0.3.0rc0+cu126torch26fancy-cp311-cp311-linux_x86_64.whl | ||
python -m ktransformers.local_chat --model_path <your model path> --gguf_path <your gguf path> --prompt_file <your prompt txt file> --cpu_infer 65 --cache_lens 1536 | ||
<when you see chat, then press enter to load the text prompt_file> | ||
``` | ||
The parameters' meaning is the same with V0.2. But As we use dual socket, we set cpu_infer to 65 | ||
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## Some Explanations | ||
1. Also we want to make further use of our two NUMA nodes on Xeon Gold cpu. | ||
To avoid the cost of data transfer between nodes, we "copy" the critical matrix on | ||
both nodes which takes more memory consumption but accelerates the prefill and decoding process. | ||
But this method takes huge memory and slow when loading weights, So be patient when loading | ||
and monitor the memory usage. We are going to optimize this huge memory overhead. Stay tuned~ <br> | ||
2. The command args `--cpu_infer 65` specifies how many cores to use (it's ok that it exceeds the physical number, | ||
but it's not the more the better. Adjust it slightly lower to your actual number of cores)<br> | ||
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3. Why CPU/GPU Hybrid Inference? | ||
DeepSeek's MLA operators are highly computationally intensive. While running everything on CPU is possible, offloading the heavy computations to the GPU results in a massive performance boost. | ||
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4. Where Does the Speedup Come From? | ||
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- Expert Offload: Unlike traditional layer-based or KVCache offloading (as seen in llama.cpp), we offload the expert computation to the CPU and MLA/KVCache to GPU, aligning perfectly with DeepSeek’s architecture for optimal efficiency. | ||
- Intel AMX Optimization – Our AMX-accelerated kernel is meticulously tuned, running several times faster than existing llama.cpp implementations. We plan to open-source this kernel after cleansing and are considering upstream contributions to llama.cpp. | ||
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5. Why Intel CPUs? | ||
Intel is currently the only CPU vendor that supports AMX-like instructions, which delivers significantly better performance compared to AVX-only alternatives. |
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token_step: | ||
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local_chat: | ||
prompt_file: "./ktransformers/p.txt" | ||
prompt_file: "" |
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