Wafer vs. vLLM

Wafer is transforming the landscape of enterprise AI by providing the fastest open-source LLMs, tailored for both serverless and dedicated inference specifically aimed at production workloads. Their serverless inference solution allows teams to leverage premium open models without the hassle of managing infrastructure or deployment issues, offering quick APIs like GLM-5.2-Fast, which minimizes latency through EAGLE speculative decoding and guarantees throughput under an SLA, alongside the standout GLM-5.2 model that excels in coding and reasoning capabilities. The cutting-edge technology from Wafer utilizes agents that optimize inference across the entire stack, effectively identifying and resolving bottlenecks in orchestration, algorithms, serving engines, GPU kernels, and various hardware configurations. This advanced system conducts a thorough profiling of the stack to ascertain whether latency or throughput problems stem from areas such as scheduling, decoding, memory pressure, or hardware compatibility, subsequently exploring multiple avenues to provide the most effective resolutions. Instead of relying on a single switch or heuristic, Wafer performs an exhaustive examination of various combinations of models, engines, kernels, and hardware to enhance overall performance. By continually honing these combinations, Wafer guarantees that enterprises can achieve maximum efficiency while making the most of open-source technologies, paving the way for unprecedented advancements in AI deployment. This dedication to innovation places Wafer at the forefront of the AI revolution, ensuring businesses remain competitive in a rapidly evolving digital landscape.

vLLM is an innovative library specifically designed for the efficient inference and deployment of Large Language Models (LLMs). Originally developed at UC Berkeley's Sky Computing Lab, it has evolved into a collaborative project that benefits from input by both academia and industry. The library stands out for its remarkable serving throughput, achieved through its unique PagedAttention mechanism, which adeptly manages attention key and value memory. It supports continuous batching of incoming requests and utilizes optimized CUDA kernels, leveraging technologies such as FlashAttention and FlashInfer to enhance model execution speed significantly. In addition, vLLM accommodates several quantization techniques, including GPTQ, AWQ, INT4, INT8, and FP8, while also featuring speculative decoding capabilities. Users can effortlessly integrate vLLM with popular models from Hugging Face and take advantage of a diverse array of decoding algorithms, including parallel sampling and beam search. It is also engineered to work seamlessly across various hardware platforms, including NVIDIA GPUs, AMD CPUs and GPUs, and Intel CPUs, which assures developers of its flexibility and accessibility. This extensive hardware compatibility solidifies vLLM as a robust option for anyone aiming to implement LLMs efficiently in a variety of settings, further enhancing its appeal and usability in the field of machine learning.