COSMOS Tools

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

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Accelerate silicon design, bring-up, and validation

  • Access deep link-layer and PHY-level telemetry, including signal quality, margining, LTSSM state transitions, and error counters
  • Reduce manual debug cycles with real-time visibility into link training, speed changes, resets, and topology configuration
  • 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

Manufacturing

Built-in tests and reporting automation

Production & Support

Event logging and root cause isolation

Testimonials

QCT

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

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.

Accton

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.

Resources

Evaluation Kits

Developer KitSupported System Validation BoardsTarget PlatformRequestStatus
COSMOS Developer Kit – Aries – x86Aries Evaluation Kitsx86Contact UsAvailable
COSMOS Developer Kit – Aries – ARMAries Evaluation KitsARMContact UsAvailable
COSMOS Developer Kit – Scorpio – x86Scorpio Evaluation Kits x86Contact UsAvailable
COSMOS Developer Kit – Scorpio – ARMScorpio Evaluation Kits ARMContact UsAvailable

Enabling Multi-Rack AI Clusters with Aries Smart Cable Modules for PCIe 6

Extended reach, simplified management, and robust supply chains for rack-scale AI at 64 GT/s.Aries Smart Cable Modules for PCIe 6.0 Highlights:PCIe 6.0 for double bandwidth to accelerate AI training and inference workloadsUp to 7-meter reach for multi-rack architecturesThinner gauge cabling for easier cable management in high-density racksMulti-vendor supply chain with… Read more

The 400G-Per-Lane Inflection Point: Where Copper and Optical Meet in AI Infrastructure

If you’ve been following AI infrastructure development, you’ve likely heard some version of this prediction: “Copper is hitting its limits. The transition to optical is inevitable. It’s happening now.”There’s truth in that statement—but the reality playing out in data centers is more nuanced than a simple technology replacement cycle. Having spent my career in connectivity, working… Read more

Astera Labs 2025 Milestones – A Breakthrough Year of Expansion, Innovation & Ecosystem Leadership

Every year-end brings a season of reflection and introspection from the year gone by, and we have the opportunity to take the learnings that came from it, framing them into a canvas for the year to come. Against a global background that often created back-and-forth macroeconomic uncertainties, Astera Labs steadily and surely forged its path forward. If I could characterize the year with one… Read more

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

New design center to focus on cutting-edge AI fabrics and emerging AI inference technologiesIndustry veteran Guy Azrad to lead operations as general manager of Astera Labs IsraelSAN JOSE, Calif. and TEL AVIV, Israel—Feb. 9, 2026—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced a significant… Read more

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

NVLink Fusion-based custom solutions will be offered to support next-generation heterogenous AI infrastructureSAN JOSE, Calif.—Dec. 2, 2025—Astera Labs, Inc. (Nasdaq: ALAB), a leader in semiconductor-based connectivity solutions for rack-scale AI infrastructure, today announced plans to deliver custom connectivity solutions, a new offering designed to address the increasing complexity… 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

COSMOS Explorer: Link Management Tools Demo

Astera Labs’ COSMOS Explorer is a powerful tool for link monitoring, management, and diagnostics. It offers a rich set of system configuration options for you to optimize performance with critical signal quality telemetry such as bit error rate, eye metrics, and link event logs. COSMOS Explorer allows you to modify link settings and get customized diagnostics in one GUI for all of our products.In… Read more

COSMOS and OpenBMC Demo at OCP 2025

Through collaboration with ASPEED Technology and Insyde Software, Astera Labs has extended COSMOS features into production AI systems to standardize management, monitoring and diagnostics of retimers and scale-up switches with OpenBMC and DMTF Redfish APIs. COSMOS now offers:Standard APIs for configuration, monitoring and lifecycle controlActionable insights with granular visibility into… Read more