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

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Why Connectivity is the New Frontier of AI Infrastructure—and What NVLink Fusion Means for the Future

Every year at GTC, the conversations on the show floor and in the hallways tell you something that raw specs alone can’t. This year, what I’m hearing is a clear inflection: the era of one-size-fits-all compute is over. Hyperscalers are deploying heterogeneous racks where NVIDIA GPUs sit alongside custom accelerators, XPUs, and purpose-built silicon developed for specific workload profiles—and… Read more

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Astera Labs Reports Fourth Quarter and Full Year 2025 Financial Results

Record quarterly revenue of $270.6 million, up 17% QoQ, and record full-year revenue of $852.5 million, up 115% year-over-yearBroadening Scorpio X-Series smart fabric roadmap to address expanding scale-up market opportunities supporting multiple customers, starting production ramp for lead platformAppointed Desmond Lynch as Chief Financial Officer with Mike Tate transitioning to the… Read more

Astera Labs Expands Global Footprint with New Israel Design Center to Support Growing Demand for AI Connectivity Solutions

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Astera Labs Broadens Scorpio X-Series Smart Fabric Switch Roadmap to Address Expanding Scale-Up Market Opportunities

Scorpio X-Series Begins Initial Production with Merchant Scale-Up Switching Market Estimated to Reach $20 billion by 2030 [1]News Highlights:Developed in collaboration with hyperscalers, Scorpio X-series products are purpose-built to support scale-up networking, and are now shipping in initial production volumesExpanded features will include support for increased radix, platform-specific… Read more

Astera Labs Expands Connectivity Portfolio with Custom Solutions

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Extending Reach of Scale-out Networks for AI Clusters

See our latest demo where our Scorpio P-Series Fabric Switches connect NVIDIA H200 GPUs and ConnectX-8 NICs – running real NCCL-based training workloads at max data rates. Our Taurus Ethernet-enabled AECs then extend reach up to 7m with full interoperability with NVIDIA Specrum-X.Learn how this demo delivers:✅ Healthy FEC performance + thermal margins under full load✅ Multi-vendor… Read more

How We Test – Taurus Interop

Learn how we conduct rigorous interop testing of Taurus Ethernet Smart Cable Modules with a range of hosts, NICs, and switches to ensure seamless deployment and minimize risk. Read more

Aries 6 Smart Cable Module Demo

In this demo video, see how Aries PCIe 6 Smart Cable Modules (SCMs) enable reliable, rack-to-rack PCIe 6 connectivity for AI scale-up infrastructure. Powered by Astera Labs’ COSMOS software suite and Scorpio Fabric Switches, the test platform demonstrates real-time link testing, monitoring, and debugging across four x16 active electrical cables. Learn how Aries 6 SCMs extend reach up to… Read more