Home
Moonshot AI and Tsinghua University Unveil PrfaaS Architecture to Break Large Model Computing Power Bottleneck
New technologies are breaking the performance bottleneck of large language models (LLMs). Recently, researchers from Moonshot AI (Moonshot) and Tsinghua University introduced a novel architecture called Prefill-as-a-Service (PrfaaS). This study tackles hardware constraints in data center deployments of large model services by optimizing compute resource allocation, thereby significantly boosting inference efficiency.
Technical Breakthrough: A "Surgical" Separation of Prefill and Decode
Currently, the inference process for large language models comprises two distinct phases:
Prefill Phase: This phase is compute-intensive, handling input processing and generating key-value cache (KVCache).
Decode Phase: This phase is memory-bandwidth-intensive, generating output word by word.
In traditional architectures, both phases are typically handled within the same data center or even the same server. Because they have different hardware resource needs, this "forced bundling" often creates an imbalance in compute and bandwidth allocation, leading to service congestion.
Core Innovation: Efficient Cross-Region Collaboration
PrfaaS ’s core highlight is achieving a decoupled service. It offloads the compute-intensive prefill tasks to specialized high-compute clusters. After task completion, the system uses standard Ethernet to transfer the generated KVCache remotely to a local decoding cluster.
This design removes physical space constraints, enabling prefill and decoding to run concurrently across different data centers. To ensure efficient transfer, PrfaaS incorporates a two-time-scale scheduling mechanism that flexibly allocates resources based on real-time traffic fluctuations, paired with precise routing to prevent long text requests from being delayed by uneven resource distribution.
Test Results: Optimizing Throughput and Latency
Research data demonstrates that the PrfaaS architecture delivers remarkable performance in real-world applications:
Service throughput increased by 54%, significantly improving the number of requests handled per unit time.
Response latency decreased significantly, making the first token generation faster from the user's perspective.
Maximized resource utilization by separating compute, network, and storage subsystems, avoiding congestion issues seen in traditional architectures.
The collaboration between Moonshot AI and Tsinghua University not only offers new engineering approaches for large-scale AI inference but also lays the groundwork for future cross-regional computing networks. This Prefill-as-a-Service model could become a key milestone in moving large models toward industrial deployment.
Related article
U.S. Stocks Hit Historic Milestone as AI and Aerospace Giants Prepare for Trillion-Dollar Debut
Elon Musk, Sam Altman, and Dario Amodei, three titans of the technology sector, are advancing toward initial public offerings for their respective ventures. With SpaceX, OpenAI, and Anthropic—three industry behemoths nearing trillion-dollar valuation
Swedish AI Startup Lovable Eyes $13.2 Billion Valuation After Major Funding Round
As AI-driven coding tools gain traction, Swedish startup Lovable has secured a major funding round. The company aims to raise $3 billion, potentially boosting its valuation to $13.2 billion—double the $6.6 billion recorded last December. Menlo Ventur
Google Tests Remy AI Agent for Gemini as Focus Shifts to User Control
According to Business Insider, Google is testing Remy, a new AI personal agent for Gemini. This tool aims to execute tasks on behalf of users, streamlining both professional workflows and daily routines.Currently, Remy is undergoing testing in an int
Related Special Topic Recommendations
Data Analysis
Best AI Anomaly Detection Tools for KPI Monitoring across SaaS and Ecommerce Teams
2026 Latest Best Top-rated AI Anomaly Detection Tools for KPI Monitoring in SaaS and Ecommerce teams! XIX.AI has curated a powerful, game-changing collection based on rigorous real-world tests and weekly updated rankings. You’ll find detailed free vs paid comparison insights to help you identify the must-try solution that boosts productivity and unlocks your AI edge. Explore now!
10 tools
xix.ai
writing
Best AI Outline Generators for Long-Form SEO Articles
2026 Latest Best Top-Rated AI Outline Generators for Long-Form SEO Articles, meticulously curated by XIX.AI. These powerful tools offer game-changing assistance in creating high-quality content quickly, boosting writing efficiency significantly. Get a free vs paid comparison along with real-world tests and detailed rankings to help you find the must-try option that suits your needs. Explore now to unlock your AI edge.
8 tools
xix.ai
Education and Learning
AI Study Tools for Homework and Exam Prep
2026 Latest Best AI Study Tools for Homework and Exam Prep! XIX.AI curates a top-rated list of powerful, game-changing tools that help students boost productivity, streamline homework completion, and ace exams through real-world tests. Get a free vs paid comparison, detailed rankings, and must-try options to unlock your AI edge. Explore now!
10 tools
xix.ai
Music composition
AI Vocal Demo Tools for Songwriters, Hooks, Toplines, and Multilingual Draft Sessions
2026 Latest Best AI Vocal Demo Tools for Songwriters, Hook Creators, and Multi-Language Content Teams! XIX.AI has curated a top-rated list of powerful game-changing tools that go through rigorous real-world tests. You’ll find detailed free vs paid comparison data, comprehensive rankings, and must-try options to help you boost writing efficiency and unlock your creative potential. Explore now to discover your perfect tool for all your content needs!
9 tools
xix.ai
Business
Best AI Competitive Research Tools for Small Businesses
2026 Latest Best Top-rated AI Competitive Research Tools for Small Businesses! XIX.AI has curated a highly powerful game-changing collection, updated weekly with rigorous real-world tests and detailed rankings. You can find a comprehensive free vs paid comparison to help you identify the must-try tools that boost your productivity and give you a competitive edge. Explore now to discover your perfect tool!
9 tools
xix.ai
Image editing
Photoshop AI Retouch Tools for Ecommerce Apparel, Skin Cleanup, and Color Consistency
2026 Latest Best Photoshop AI retouch tools for ecommerce apparel, skin cleanup, and color consistency! This top-rated curated list features powerful game-changing solutions that help you boost writing efficiency, streamline content creation, and achieve perfect visual results effortlessly. Each tool has undergone real-world tests through weekly updated rankings, complete with free vs paid comparison details. Backed by XIX.AI, it’s the must-try guide for anyone aiming to unlock your AI edge. Explore now!
10 tools
xix.ai
Comments (1)
0/500
![HarryRoberts]()
Wait, so PrfaaS separates prefill from decode? That sounds like a smart way to reduce latency, but how does it handle memory overhead? 🤔
New technologies are breaking the performance bottleneck of large language models (LLMs). Recently, researchers from Moonshot AI (Moonshot) and Tsinghua University introduced a novel architecture called Prefill-as-a-Service (PrfaaS). This study tackles hardware constraints in data center deployments of large model services by optimizing compute resource allocation, thereby significantly boosting inference efficiency.
Technical Breakthrough: A "Surgical" Separation of Prefill and Decode
Currently, the inference process for large language models comprises two distinct phases:
Prefill Phase: This phase is compute-intensive, handling input processing and generating key-value cache (KVCache).
Decode Phase: This phase is memory-bandwidth-intensive, generating output word by word.
In traditional architectures, both phases are typically handled within the same data center or even the same server. Because they have different hardware resource needs, this "forced bundling" often creates an imbalance in compute and bandwidth allocation, leading to service congestion.
Core Innovation: Efficient Cross-Region Collaboration
This design removes physical space constraints, enabling prefill and decoding to run concurrently across different data centers. To ensure efficient transfer, PrfaaS incorporates a two-time-scale scheduling mechanism that flexibly allocates resources based on real-time traffic fluctuations, paired with precise routing to prevent long text requests from being delayed by uneven resource distribution.
Test Results: Optimizing Throughput and Latency
Research data demonstrates that the PrfaaS architecture delivers remarkable performance in real-world applications:
Service throughput increased by 54%, significantly improving the number of requests handled per unit time.
Response latency decreased significantly, making the first token generation faster from the user's perspective.
Maximized resource utilization by separating compute, network, and storage subsystems, avoiding congestion issues seen in traditional architectures.
The collaboration between Moonshot AI and Tsinghua University not only offers new engineering approaches for large-scale AI inference but also lays the groundwork for future cross-regional computing networks. This Prefill-as-a-Service model could become a key milestone in moving large models toward industrial deployment.
U.S. Stocks Hit Historic Milestone as AI and Aerospace Giants Prepare for Trillion-Dollar Debut
Elon Musk, Sam Altman, and Dario Amodei, three titans of the technology sector, are advancing toward initial public offerings for their respective ventures. With SpaceX, OpenAI, and Anthropic—three industry behemoths nearing trillion-dollar valuation
Swedish AI Startup Lovable Eyes $13.2 Billion Valuation After Major Funding Round
As AI-driven coding tools gain traction, Swedish startup Lovable has secured a major funding round. The company aims to raise $3 billion, potentially boosting its valuation to $13.2 billion—double the $6.6 billion recorded last December. Menlo Ventur
Google Tests Remy AI Agent for Gemini as Focus Shifts to User Control
According to Business Insider, Google is testing Remy, a new AI personal agent for Gemini. This tool aims to execute tasks on behalf of users, streamlining both professional workflows and daily routines.Currently, Remy is undergoing testing in an int
2026 Latest Best Top-rated AI Anomaly Detection Tools for KPI Monitoring in SaaS and Ecommerce teams! XIX.AI has curated a powerful, game-changing collection based on rigorous real-world tests and weekly updated rankings. You’ll find detailed free vs paid comparison insights to help you identify the must-try solution that boosts productivity and unlocks your AI edge. Explore now!
10 tools
xix.ai
2026 Latest Best Top-Rated AI Outline Generators for Long-Form SEO Articles, meticulously curated by XIX.AI. These powerful tools offer game-changing assistance in creating high-quality content quickly, boosting writing efficiency significantly. Get a free vs paid comparison along with real-world tests and detailed rankings to help you find the must-try option that suits your needs. Explore now to unlock your AI edge.
8 tools
xix.ai
2026 Latest Best AI Study Tools for Homework and Exam Prep! XIX.AI curates a top-rated list of powerful, game-changing tools that help students boost productivity, streamline homework completion, and ace exams through real-world tests. Get a free vs paid comparison, detailed rankings, and must-try options to unlock your AI edge. Explore now!
10 tools
xix.ai
2026 Latest Best AI Vocal Demo Tools for Songwriters, Hook Creators, and Multi-Language Content Teams! XIX.AI has curated a top-rated list of powerful game-changing tools that go through rigorous real-world tests. You’ll find detailed free vs paid comparison data, comprehensive rankings, and must-try options to help you boost writing efficiency and unlock your creative potential. Explore now to discover your perfect tool for all your content needs!
9 tools
xix.ai
2026 Latest Best Top-rated AI Competitive Research Tools for Small Businesses! XIX.AI has curated a highly powerful game-changing collection, updated weekly with rigorous real-world tests and detailed rankings. You can find a comprehensive free vs paid comparison to help you identify the must-try tools that boost your productivity and give you a competitive edge. Explore now to discover your perfect tool!
9 tools
xix.ai
2026 Latest Best Photoshop AI retouch tools for ecommerce apparel, skin cleanup, and color consistency! This top-rated curated list features powerful game-changing solutions that help you boost writing efficiency, streamline content creation, and achieve perfect visual results effortlessly. Each tool has undergone real-world tests through weekly updated rankings, complete with free vs paid comparison details. Backed by XIX.AI, it’s the must-try guide for anyone aiming to unlock your AI edge. Explore now!
10 tools
xix.ai
Wait, so PrfaaS separates prefill from decode? That sounds like a smart way to reduce latency, but how does it handle memory overhead? 🤔
