kvcache-ai/Mooncake

Features

• Disaggregated Inference Orchestration - Orchestrates the separate prefill and decode phases across distributed GPU pools to optimize LLM serving throughput.
• Disaggregated Inference - Separates the prefill and decode phases of LLM inference into distinct hardware clusters.
• Prefill-Decode Disaggregation - Implements the architectural separation of compute-intensive prefill and memory-intensive decoding phases into distinct hardware clusters.
• KV Cache Management - Manages the storage and retrieval of key-value caches in transformer models to reduce inference latency and memory overhead.
• Tiered Storage Offloading - Balances cost and capacity by offloading KV cache blocks between high-speed RAM and SSD storage.
• Prefix-Aware and Disaggregated Deployments - Provides a serving platform that separates prefill and decode phases into distinct clusters for optimal resource utilization.
• High-Throughput Inference Services - Distributes computational loads across multiple accelerators to support high-throughput large-scale language model inference.
• Cache Eviction Policies - Triggers removal of cache objects when memory usage reaches a predefined high watermark ratio.
• Distributed Caches - Stores and retrieves reusable cache data across an inference cluster to support disaggregated architectures.
• Distributed Key-Value Stores - Implements a high-performance key-value engine to store and retrieve immutable data objects across a cluster.
• Distributed Caching - Manages the storage and transfer of key-value caches across instances to reduce inference latency.
• LLM KV Cache Stores - Implements a distributed storage layer specifically for pooling and transferring LLM key-value caches across clusters.
• Distributed Shared Memory - Aggregates memory across multiple servers into a unified shared pool for scalable remote memory access.
• Distributed Resource Pooling - Pools underutilized processor and memory resources across clusters to create a shared storage layer.
• RDMA GPU Transfers - Employs RDMA and zero-copy techniques to move data between compute nodes at line rate.
• KV Cache VRAM Transfers - Moves key-value cache blocks between GPU memory pools across PCIe or RDMA to support disaggregated serving.
• RDMA Memory Pools - Provides a high-performance memory pool that uses RDMA and zero-copy transfers to eliminate CPU overhead during data movement.
• Inter-Node Cache Transfers - Transfers cache data between processing instances over RDMA or TCP to accelerate serving.
• Inter-Worker Tensor Transfers - Uses high-performance RDMA to move cache and tensors between prefill and decode worker nodes.
• Direct GPU-to-Storage Transfers - Moves data directly between GPU memory and storage to bypass the CPU and reduce overhead.
• Zero-Copy Networking - Moves data directly between hardware memory spaces over RDMA to bypass the CPU and reduce latency.
• GPU Memory Orchestration - Coordinates data movement and synchronization between system memory, video memory, and local storage for accelerators.
• Hardware Memory Abstractions - Provides a unified interface to synchronize data between system memory, video memory, and local storage.
• Lease-Based Protection - Grants temporary locks on objects to prevent removal until a specific lease expires.
• LRU Cache Eviction - Reclaims system memory by prioritizing the removal of least recently used objects.
• Object Pinning - Protects essential cache data from eviction using time-limited soft pins or permanent hard pins.
• SLO-Driven Predictive Routing - Uses prediction-based routing and early rejection to balance throughput and latency against service level objectives.
• Accelerator-to-Accelerator Communication - Facilitates high-bandwidth data exchange between specialized AI accelerators using optimized communication paths.
• Centralized Service Metadata - Integrates with Redis, etcd, or HTTP services to provide shared storage for transfer engine metadata and governance.
• Data Locality Optimizers - Assigns preferred storage segments for object allocation to minimize network overhead and increase speed.
• SSD Storage Extensions - Offloads in-memory data to a distributed file system on SSDs to balance storage cost and capacity.
• Storage Scaling - Adjusts system capacity in real-time by adding or removing storage nodes from the cluster without downtime.
• Distributed Leader Election - Provides coordination mechanisms to ensure a single active leader among multiple master nodes for cluster state management.
• High Availability Clustering - Deploys multiple coordinated master nodes with leader election to ensure continuous service availability.
• Asynchronous Data Transfers - Implements non-blocking movement of data across networks to maintain high responsiveness during inference.
• Network Protocols - Utilizes various network protocols including TCP and RDMA for high-speed data transmission between compute instances.
• RDMA - Limits active RDMA connections using an eviction algorithm to prevent performance degradation.
• Object Lease Protections - Prevents the eviction of critical data by granting temporary locks that expire after a set duration.
• Connection Handshake Metadata - Exchanges operational metadata during handshakes to track internal connection status and node metadata.
• Hardware Topology Optimizers - Optimizes data paths by selecting the most efficient network interface via a hardware topology matrix.
• Topology-Aware Routing - Selects the most efficient network interface by matching hardware paths against a device topology matrix.
• Tiered Storage Transfers - Achieves zero-copy transfers of data between different storage tiers using RDMA and TCP protocols.
• Accelerator Routing Logic - Implements logic to detect and optimize data paths across hardware environments for efficient accelerator memory access.
• Multi-Tenant Memory Tracking - Enforces memory admission limits for different tenants and performs scoped eviction when limits are exceeded.
• Decoupled Store Services - Runs a local store service to handle memory management separately from the main process.
• Remote Memory Segments - Provides named memory segments that allow remote compute nodes to perform read and write operations on local memory.
• Metadata Store Backends - Supports interchangeable remote database backends for storing and retrieving transfer engine metadata.
• Pluggable Cluster Metadata Stores - Manages cluster-wide connection status and metadata using external coordination services like etcd.
• Disaggregated Serving - KV-cache-centric architecture for disaggregated model serving.

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