COSMOS Tools

COSMOS CLI and COSMOS Explorer for link management, monitoring, and debugging

Request the Evaluation Kit

Accelerate silicon design, bring-up, and validation

  • Gain visibility across physical, data link, and protocol layers – from signal integrity and margining to LTSSM states and error metrics
  • Reduce manual debug cycles with real-time visibility into link training, speed changes, recoveries, protocol logs and more
  • Execute repeatable validation workflows, including stress testing, protocol checks, and telemetry capture
  • Modify link parameters, trigger tests, and capture rich diagnostics from a unified control plane

COSMOS Tools Features and Benefits

COSMOS Tools Use Cases

Design & Bring Up

Rapid bring-up​ and protocol checks

System Validation

Device configuration​ and link tuning

Automated Testing

Built-in tests and reporting automation

Production & Support

Event logging ​and root cause isolation

Testimonials

“With COSMOS CLI, we can quickly read the PCIe link status and capture the firmware logs directly from the device. This eliminates the need for additional tools to capture firmware logs and greatly improves work efficiency.”

“COSMOS CLI just worked. Sharing the same tools as the Astera Labs engineering team removed debug friction and significantly accelerated platform bring-up.”

“SK hynix leveraged the advanced visual capabilities of the COSMOS Explorer tool to swiftly comprehend and pinpoint the root cause of incompatibility occurrences, streamlining the PCIe 6 eSSD bring-up process.”

Resources

Evaluation Kits

Evaluation KitSupported System Validation BoardsRequestStatus
COSMOS Evaluation Kit – AriesAries System Validation BoardsContact UsAvailable
COSMOS Evaluation Kit – ScorpioScorpio System Validation BoardsContact UsAvailable
COSMOS Evaluation Kit – LeoLeo System Validation BoardsContact UsComing Soon
COSMOS Evaluation Kit – TaurusTaurus System Validation BoardsContact UsComing Soon

The 1.2-Meter Challenge: Understanding Your Passive Copper Options at 224G

You have 40 dB of channel budget and 1.75 meters to traverse in a cable backplane in a modern AI rack. At 224G, those two numbers don’t play nicely together. But the evolution of the AI infrastructure landscape is making this a problem we can’t ignore: We’ve gone from thinking about compute in terms of an 8-GPU chassis to designing systems around 72, 144, or even more accelerators in a… Read more

“AI Your Way” in Action: How We Put Our Principles Into Execution With NVIDIA NVLink Fusion

When NVIDIA unveiled NVLink Fusion at Computex back in 2025, we were proud to be included as a lead partner providing scale-up connectivity solutions. Joining the NVLink Fusion ecosystem was a no-brainer for us: Our mission has always been to create purpose-built interconnect components tailored to hyperscalers’ unique needs, and here was a clear opportunity to help offer a reliable, adaptable… Read more

Computex 2026: Agentic Workloads, CPUs Take Center Stage for AI Infrastructure

Computex 2026 put agentic AI and the CPU on the same track.They showed up together in the biggest keynotes of the week. Intel talked about CPUs as the orchestration layer for agentic systems. Arm argued that agents are driving a fresh wave of CPU demand in the data center. NVIDIA introduced Vera as a CPU designed for agentic workflows rather than for the older model of general-purpose… Read more

Astera Labs Expands Taurus Family with Industry’s first OCP-Standard Footprint Compatible 3.2T Smart Retimers and Smart Redrivers

Unified COSMOS stack helps customers accelerate time to market with real-time link observability and advanced diagnostic featuresNews Highlights:Expanded Taurus family adds 3.2T Ethernet Smart Retimers and Smart Redrivers for scale-up and scale-out AI infrastructure.Sampling industry-first Smart Retimers and Smart Redrivers built on the OCP Signal Conditioner Standard Footprint…. Read more

Astera Labs Expands Taiwan Operations to Accelerate Global AI Infrastructure Buildout

Expanded Cloud-Scale Interop Lab and growing engineering presence to strengthen AI system integration with leading AI platform providers and Taiwan system manufacturersTAIPEI, Taiwan—June 3, 2026—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced a significant expansion of its Taiwan operations… Read more

Astera Labs to Host Press Conference, Live Demos, and Technical Talks at Computex 2026

TAIPEI, Taiwan, May 26, 2026—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, will host press and industry analysts at Computex 2026 in the company’s room at the Taipei Nangang Exhibition Center, Hall 1 (TaiNEX 1), Room 303, third floor.WHAT: Astera Labs will use its Computex program to highlight the company’s… Read more

Astera Labs Extends Leadership in Open, AI Scale-Up Networking with New 320 Lane Scorpio X-Series Smart Fabric Switch

Now Shipping to Leading Hyperscalers, Scorpio Smart Fabric Switch Family Delivers Breakthrough Accelerator Utilization Through Memory-Semantic Based Open and Platform-Specific ProtocolsNews Highlights:Largest open, memory-semantic fabric switch: The Scorpio™ X-Series 320 Lane AI fabric switch, shipping today, supports increased scale-up cluster sizes with low latencyIntelligent… Read more

First Look: Taurus Smart Signal Conditioners

As AI scale-up networks move to 200G per lane, signal integrity and reach extension become critical design challenges. Astera Labs solves this challenge with the introduction of its fourth generation of Taurus Smart Signal Conditioners – our new 3.2T family of Retimers and  Redrivers for on-board Ethernet, UALink™, and ESUN scale-up connectivity.Taurus is the industry’s first signal… Read more

Accelerating the NVIDIA NVLink Fusion Ecosystem: How Astera Labs and NVIDIA are Bringing the Vision to Life

Join Thad Omura and Kishore Atreya for an engaging fireside chat on the NVIDIA NVLink Fusion ecosystem. Dive into how NVLink Fusion is redefining accelerator connectivity and discover how Astera Labs is enabling the ecosystem with purpose-built, high-performance solutions. This forward-looking conversation offers valuable insights for technology leaders, architects, and anyone building the… Read more

Scorpio 320 Lane Fabric Switch Demo

For today’s AI workloads, maximizing token performance means ensuring every GPU cycle is spent computing, not waiting on data.In this video, Steven Liao demonstrates how Astera Labs’ Scorpio 320 Lane fabric switch maximizes token performance by delivering single-hop, line-rate peer-to-peer connectivity to GPUs, which eliminates data movement bottlenecks that stall GPU utilization.TThe… Read more