# Valen Systems

> Technology for speed, efficiency, reliability, restorability, security, developer access and user experience.

Valen Systems Inc. builds computing-systems technology for software teams, industrial workloads, AI systems and infrastructure operators. Arcturus is the reliability and management product built on Rubian/Kestowv. The company's scope extends from individual machines to fleets and data-center systems.

## Official sites

- [Systems, products and paid evaluations](https://www.valen-systems.com/)
- [Company, research, documentation and evidence](https://valensystemsinc.com/)
- [Core, the app-switcher made programmable by AI](https://valencoreprototype.com/)

All three sites belong to Valen Systems Inc. Business-application material belongs to Core's separate scope; earlier business-service URLs remain accessible but are not part of this active systems inventory.

## Product and contact boundaries

The [consumer Arcturus pathway](https://www.valen-systems.com/arcturus/community) describes the planned open-source community edition and Omarchy packaging. Current free tools identify their own licenses and supported platforms. [Paid technical engagements](https://www.valen-systems.com/offers) purchase the scope stated on each offer, not a software license. [Contact a human](https://www.valen-systems.com/contact) to discuss requirements.

## Canonical page inventory

- [Valen Systems Inc. | The Whole System Is the Work](https://valensystemsinc.com/)
- [About Valen Systems | Critical Software for Compute-Focused Companies](https://valensystemsinc.com/about): Founded in 2026 and headquartered in Hollywood, California, Valen Systems builds compute software for speed, efficiency, reliability and recovery.
- [Meet the Valen Systems Team | Hollywood, California](https://valensystemsinc.com/team)
- [Investor Relations](https://valensystemsinc.com/investors)
- [Free Software and Open-Source Tools](https://valensystemsinc.com/tools)
- [Open-Source Projects and Developer Utilities](https://valensystemsinc.com/oss)
- [Support Rubian and Kestowv Research](https://valensystemsinc.com/support-research)
- [Rubian | Programmable Operating Environment for People and Agents](https://valensystemsinc.com/os)
- [Project Valux Architecture | Rubian and Kestowv](https://valensystemsinc.com/os/architecture)
- [Rubian and Kestowv Benchmarks](https://valensystemsinc.com/os/benchmarks)
- [Rubian Benchmark Methodology](https://valensystemsinc.com/os/benchmarks/methodology)
- [Rubian CLI Performance Results](https://valensystemsinc.com/os/performance)
- [Operating-System Responsiveness Under Load | Rubian CLI](https://valensystemsinc.com/os/responsiveness-under-load)
- [Operating-System Energy Efficiency | Rubian Research](https://valensystemsinc.com/os/energy-efficiency)
- [Rubian CLI Security and Recovery](https://valensystemsinc.com/os/security-and-recovery)
- [Rubian CLI Compatibility and Deployment Environments](https://valensystemsinc.com/os/compatibility)
- [Rubian and Kestowv Research](https://valensystemsinc.com/os/research)
- [Rubian CLI Frequently Asked Questions](https://valensystemsinc.com/os/faq)
- [Deployments | Valen Systems Work Running Today](https://valensystemsinc.com/deployments)
- [JRuby 10.1+ Runtime Deployment](https://valensystemsinc.com/deployments/jruby-10-1)
- [Kestowv to JRuby 10.1+ | PR 9174 Technical Provenance](https://valensystemsinc.com/research/kestowv-to-jruby)
- [Valen Systems Research Library | Systems Evidence](https://valensystemsinc.com/network)
- [Valen Systems Field Notes | Technical Analysis](https://valensystemsinc.com/network/blog)
- [Systems Studies | Valen Systems Blog](https://valensystemsinc.com/network/studies)
- [Valen Systems Network Feed | Recommendation Policy](https://valensystemsinc.com/network/docs/network-feed)
- [Red Eagle Fenv and Microsoft’s 2006 Accessibility Competition](https://valensystemsinc.com/network/blog/red-eagle-fenv)
- [The Scheduler Cannot See the Work](https://valensystemsinc.com/network/studies/scheduler-intent-gap)
- [An Idle CPU Is Not Always the Right CPU](https://valensystemsinc.com/network/studies/cpu-placement-and-locality)
- [Migration Trades Locality for Balance](https://valensystemsinc.com/network/studies/migration-locality-and-load-balance)
- [Shorter Slices Do Not Create Free Responsiveness](https://valensystemsinc.com/network/studies/latency-throughput-tradeoff)
- [Fair CPU Time Is Not Business Importance](https://valensystemsinc.com/network/studies/fairness-is-not-importance)
- [History Arrives After the Work Changes](https://valensystemsinc.com/network/studies/utilization-signals-and-demand-change)
- [Idle Does Not Mean Equivalent](https://valensystemsinc.com/network/studies/heterogeneous-cpu-placement)
- [Energy Models Are Models](https://valensystemsinc.com/network/studies/energy-aware-scheduling-limits)
- [Finding Local Memory Costs Something](https://valensystemsinc.com/network/studies/numa-balancing-overhead)
- [Coordination Gets More Expensive as the Machine Grows](https://valensystemsinc.com/network/studies/scheduling-at-machine-scale)
- [Two Logical CPUs Still Share a Core](https://valensystemsinc.com/network/studies/smt-contention-and-security)
- [A vCPU May Hide a Whole Scheduler](https://valensystemsinc.com/network/studies/virtual-machines-and-accelerators)
- [One Default Policy Cannot Be Optimal for Every Workload](https://valensystemsinc.com/network/studies/default-scheduler-compromise)
- [Local Scheduler Decisions Can Create Global Effects](https://valensystemsinc.com/network/studies/scheduler-heuristics-and-global-reasoning)
- [sched_ext Makes Experiments Easier, Not Automatically Safe](https://valensystemsinc.com/network/studies/sched-ext-experimentation)
- [A Warp Takes the Branches Together](https://valensystemsinc.com/network/studies/warp-divergence-and-utilization)
- [Occupancy Is a Resource Allocation Problem](https://valensystemsinc.com/network/studies/gpu-occupancy-resource-allocation)
- [GPU Memory Wants Neighboring Threads](https://valensystemsinc.com/network/studies/gpu-memory-access-and-coalescing)
- [A Busy GPU Can Still Have Idle Compute Units](https://valensystemsinc.com/network/studies/gpu-load-imbalance)
- [Tiny Kernels Pay a Launch Cost](https://valensystemsinc.com/network/studies/kernel-launch-latency-and-batching)
- [Throughput Queues Do Not Behave Like Latency Queues](https://valensystemsinc.com/network/studies/gpu-preemption-and-priority)
- [GPU Kernels Share More Than the Compute Units](https://valensystemsinc.com/network/studies/gpu-shared-resource-contention)
- [GPU Throughput Moves When Power and Temperature Move](https://valensystemsinc.com/network/studies/gpu-power-and-thermal-constraints)
- [Independent Kernels Can Overlap. Dependent Kernels Cannot](https://valensystemsinc.com/network/studies/gpu-dependency-graphs)
- [The CPU and GPU Can Wait on Each Other](https://valensystemsinc.com/network/studies/cpu-gpu-synchronization)
- [More GPUs Add Communication to the Schedule](https://valensystemsinc.com/network/studies/multi-gpu-communication)
- [Maximum Throughput Is Not a Real-Time Guarantee](https://valensystemsinc.com/network/studies/gpu-real-time-guarantees)
- [DRAM Remembers a Row, Not Your Intent](https://valensystemsinc.com/network/studies/dram-row-buffer-and-bank-conflicts)
- [The Memory Bus Pays to Change Direction](https://valensystemsinc.com/network/studies/dram-read-write-turnaround)
- [More Memory Threads Stop Helping at Saturation](https://valensystemsinc.com/network/studies/memory-bandwidth-and-parallelism)
- [Remote Memory Is a Topology Decision](https://valensystemsinc.com/network/studies/numa-memory-placement)
- [Memory Has Maintenance Windows](https://valensystemsinc.com/network/studies/dram-refresh-and-availability)
- [VRAM Contention Is a Shared-Bandwidth Problem](https://valensystemsinc.com/network/studies/vram-contention-and-cache)
- [Unified Memory Can Move the Bottleneck](https://valensystemsinc.com/network/studies/unified-memory-page-migration)
- [Free Memory Is Not Always a Usable Block](https://valensystemsinc.com/network/studies/memory-allocation-fragmentation-and-compression)
- [Can Workload Coordination Reduce Memory Contention?](https://valensystemsinc.com/network/studies/workload-coordination-and-memory-contention)
- [Valen Systems Inc. | Systems Technology & Engineering](https://valensystemsinc.com/company)
- [Systems Research](https://valensystemsinc.com/research)
- [Systems Benchmarks for Data Centers](https://valensystemsinc.com/research/benchmarks)
- [Kestowv Systems Layer](https://valensystemsinc.com/research/kestowv)
- [Rubian Command-Line Operating Environment](https://valensystemsinc.com/research/rubian)
- [Systems Studies and Documentation](https://valensystemsinc.com/research/studies)
- [Research Sponsorship Overview](https://valensystemsinc.com/research/support)
- [The Valen Systems Thesis | From the Processor to the Business](https://valensystemsinc.com/thesis)
- [Data-center power monitoring starts with a better handoff](https://valensystemsinc.com/network/blog/data-center-power-monitoring-handoff)
- [Karmada has graduated. Your failover plan still needs a rehearsal.](https://valensystemsinc.com/network/blog/karmada-graduation-failover-rehearsal)
- [NVHBM changes the memory design. Start with the workload.](https://valensystemsinc.com/network/blog/nvhbm-workload-evaluation)
- [OpenTelemetry after graduation: write the incident path, not just the dashboard](https://valensystemsinc.com/network/blog/opentelemetry-incident-path-after-graduation)
- [Three small Cloudflare tools, now open source](https://valensystemsinc.com/network/blog/three-small-cloudflare-tools)
- [Email Fixture Lab: inspect an email file locally](https://valensystemsinc.com/network/blog/email-fixture-lab)
- [Two more free tools for Cloudflare logging](https://valensystemsinc.com/network/blog/two-free-logging-tools)
- [Check Worker request policies before wiring them in](https://valensystemsinc.com/network/blog/worker-request-policy-tools)
- [24 open-source tools for Cloudflare work](https://valensystemsinc.com/network/blog/24-open-source-cloudflare-tools)
- [A service can be running before it's ready](https://valensystemsinc.com/network/blog/running-is-not-ready)
- [Privacy Policy](https://valensystemsinc.com/privacy)
- [Terms and Conditions](https://valensystemsinc.com/terms)
- [Product Documentation](https://valensystemsinc.com/product-documentation)
- [Rubian/Kestowv Documentation](https://valensystemsinc.com/product-documentation/rubian-kestowv)
- [Rubian capabilities](https://valensystemsinc.com/product-documentation/rubian-kestowv/capabilities)
- [Start a Rubian session](https://valensystemsinc.com/product-documentation/rubian-kestowv/get-started)
- [Startup, discovery and recall](https://valensystemsinc.com/product-documentation/rubian-kestowv/startup-and-discovery)
- [Command language and results](https://valensystemsinc.com/product-documentation/rubian-kestowv/command-language)
- [Files and paths](https://valensystemsinc.com/product-documentation/rubian-kestowv/files-and-paths)
- [Search and process text](https://valensystemsinc.com/product-documentation/rubian-kestowv/text-processing)
- [Editing and archives](https://valensystemsinc.com/product-documentation/rubian-kestowv/editing-and-archives)
- [Accounts and permissions](https://valensystemsinc.com/product-documentation/rubian-kestowv/accounts-and-permissions)
- [Background jobs](https://valensystemsinc.com/product-documentation/rubian-kestowv/background-jobs)
- [Recurring work](https://valensystemsinc.com/product-documentation/rubian-kestowv/recurring-work)
- [Taskman and process control](https://valensystemsinc.com/product-documentation/rubian-kestowv/taskman)
- [Libraries with Forge](https://valensystemsinc.com/product-documentation/rubian-kestowv/forge)
- [Networking and file transfer](https://valensystemsinc.com/product-documentation/rubian-kestowv/networking)
- [Agent workspaces](https://valensystemsinc.com/product-documentation/rubian-kestowv/agent-workspaces)
- [Shared work and messaging](https://valensystemsinc.com/product-documentation/rubian-kestowv/collaboration)
- [Projects and session notes](https://valensystemsinc.com/product-documentation/rubian-kestowv/projects)
- [System and storage inspection](https://valensystemsinc.com/product-documentation/rubian-kestowv/system-inspection)
- [Shell tools and customization](https://valensystemsinc.com/product-documentation/rubian-kestowv/shell-tools)
- [Prepare a Kestowv pilot](https://valensystemsinc.com/product-documentation/rubian-kestowv/pilot/get-started)
- [pilotctl command reference](https://valensystemsinc.com/product-documentation/rubian-kestowv/pilot/commands)
- [Pilot configuration reference](https://valensystemsinc.com/product-documentation/rubian-kestowv/pilot/configuration)
- [Services, releases and recovery](https://valensystemsinc.com/product-documentation/rubian-kestowv/pilot/services-and-recovery)
- [Workload evaluations](https://valensystemsinc.com/product-documentation/rubian-kestowv/pilot/workloads)
- [Rubian and Kestowv troubleshooting](https://valensystemsinc.com/product-documentation/rubian-kestowv/troubleshooting)
- [Availability and compatibility](https://valensystemsinc.com/product-documentation/rubian-kestowv/compatibility)
- [Arcturus documentation](https://valensystemsinc.com/product-documentation/rubian-kestowv/arcturus)
- [Predictive maintenance scope](https://valensystemsinc.com/product-documentation/rubian-kestowv/arcturus/predictive-maintenance)
- [Investigate a data-center condition](https://valensystemsinc.com/product-documentation/rubian-kestowv/arcturus/data-center)
- [Inspect a machine and record an incident](https://valensystemsinc.com/product-documentation/rubian-kestowv/arcturus/machines)
- [Observations and troubleshooting](https://valensystemsinc.com/product-documentation/rubian-kestowv/arcturus/observations)
- [Valux documentation](https://valensystemsinc.com/product-documentation/rubian-kestowv/valux)
- [Media and Interviews](https://valensystemsinc.com/media)
- [Test the workload before counting on Memory QoS](https://valensystemsinc.com/network/blog/kubernetes-memory-qos-capacity-test)
- [Troy Mallory on Building with JRuby](https://valensystemsinc.com/media/troy-mallory-jruby)
- [William Robinson](https://valensystemsinc.com/team/william-robinson)
- [Troy Mallory](https://valensystemsinc.com/team/troy-mallory)
- [Incremental Kubernetes backups need a tested restore path](https://valensystemsinc.com/network/blog/kubernetes-changed-block-tracking-restore-test)
- [Your inference benchmark changed. Did the system get faster?](https://valensystemsinc.com/network/blog/aiperf-inference-benchmark-migration)
- [Problems We Solve](https://valensystemsinc.com/product-documentation/rubian-kestowv/problems-we-solve)
- [The Valen Systems foundation](https://valensystemsinc.com/technology)
- [An unused Kubernetes volume isn't permission to delete it.](https://valensystemsinc.com/network/blog/kubernetes-unused-pvc-storage-review): Industry analysis. Kubernetes now exposes an unused-PVC signal. Turn it into an owned storage review, with retention and recovery checks, before treating it as a cleanup list.