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Topic #10: 오픈소스 LLM 씬의 라이징 스타! 'DeepSeek'을 알아보자

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작성자 Fay 작성일 25-02-01 13:32 조회 4 댓글 0

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Screenshot-2024-10-18-at-12.21.33-AM.png free deepseek AI has open-sourced each these fashions, allowing companies to leverage underneath particular phrases. So with all the things I read about models, I figured if I could discover a mannequin with a really low quantity of parameters I might get something value using, but the factor is low parameter rely leads to worse output. Read more: The Unbearable Slowness of Being (arXiv). Read extra: Ninety-five theses on AI (Second Best, Samuel Hammond). We adopt the BF16 information format as an alternative of FP32 to track the first and second moments in the AdamW (Loshchilov and Hutter, 2017) optimizer, without incurring observable performance degradation. The paper introduces DeepSeekMath 7B, a big language model that has been pre-educated on a massive amount of math-associated knowledge from Common Crawl, totaling 120 billion tokens. Large language fashions (LLM) have shown spectacular capabilities in mathematical reasoning, however their application in formal theorem proving has been limited by the lack of coaching data. Notably, our superb-grained quantization strategy is very in step with the thought of microscaling formats (Rouhani et al., 2023b), while the Tensor Cores of NVIDIA next-technology GPUs (Blackwell collection) have introduced the support for microscaling codecs with smaller quantization granularity (NVIDIA, 2024a). We hope our design can function a reference for future work to maintain pace with the most recent GPU architectures.


DeepSeek-Coder-V2_performance.png Together with our FP8 coaching framework, we further cut back the memory consumption and communication overhead by compressing cached activations and optimizer states into decrease-precision formats. In order to make sure correct scales and simplify the framework, we calculate the maximum absolute value online for every 1x128 activation tile or 128x128 weight block. To alleviate this problem, we quantize the activation before MoE up-projections into FP8 after which apply dispatch elements, which is compatible with FP8 Fprop in MoE up-projections. Furthermore, in the prefilling stage, to enhance the throughput and conceal the overhead of all-to-all and TP communication, we concurrently process two micro-batches with similar computational workloads, overlapping the eye and MoE of one micro-batch with the dispatch and combine of one other. In DeepSeek-V3, we implement the overlap between computation and communication to hide the communication latency during computation. For the deployment of free deepseek-V3, we set 32 redundant experts for the prefilling stage. To this end, we introduce a deployment strategy of redundant experts, which duplicates excessive-load experts and deploys them redundantly.


The minimal deployment unit of the decoding stage consists of 40 nodes with 320 GPUs. Each MoE layer consists of 1 shared expert and 256 routed specialists, the place the intermediate hidden dimension of each expert is 2048. Among the many routed experts, eight experts might be activated for each token, and each token will probably be ensured to be sent to at most 4 nodes. Finally, we're exploring a dynamic redundancy technique for specialists, where every GPU hosts extra specialists (e.g., 16 specialists), but solely 9 might be activated during every inference step. For the MoE half, each GPU hosts only one expert, and sixty four GPUs are chargeable for hosting redundant consultants and shared specialists. Under this configuration, DeepSeek-V3 contains 671B total parameters, of which 37B are activated for every token. From this perspective, each token will choose 9 consultants throughout routing, the place the shared expert is thought to be a heavy-load one that will all the time be chosen.


However, the current communication implementation depends on expensive SMs (e.g., we allocate 20 out of the 132 SMs accessible in the H800 GPU for this goal), which is able to limit the computational throughput. However, on the H800 architecture, it's typical for two WGMMA to persist concurrently: whereas one warpgroup performs the promotion operation, the other is ready to execute the MMA operation. As illustrated in Figure 6, the Wgrad operation is performed in FP8. All-to-all communication of the dispatch and mix components is carried out by way of direct level-to-point transfers over IB to attain low latency. I’ll go over each of them with you and given you the pros and cons of each, then I’ll show you the way I set up all three of them in my Open WebUI occasion! Given the substantial computation involved in the prefilling stage, the overhead of computing this routing scheme is almost negligible. However, this requires extra cautious optimization of the algorithm that computes the globally optimal routing scheme and the fusion with the dispatch kernel to reduce overhead. 128 parts, equal to 4 WGMMAs, represents the minimal accumulation interval that can significantly enhance precision without introducing substantial overhead. Higher FP8 GEMM Accumulation Precision in Tensor Cores.

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