Launching YOCO (You Only Compute Once): Industry’s First Contractual Guarantee To End GPU Waste In AI Training

Replay the Webinar: Navigating Networking Transitions Shaping AI Infra Economics: Scaling Up, Out, and Across

Play SemiAnalysis-Clockwork Webinar: Comparing Fault Tolerance Frameworks & TCO Impact

Launching TorchPass: A New Class of Fault Tolerance to End Failure-Driven GPU Waste In AI Training

Our Products

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Visibility

What Drives the AI Visibility Gap?

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Problem Statement: Four drivers of lack of visibility

Messy Configs (FA) | Real-time (FM) | Correlation (WM) | Attribution (FM + WM)

Example problems Focus area Category Hardware topology, physical performance Resource orchestration and monitoring System 
software layers Filesystems, 
cloud, SLAs NVLink misconfig, aging GPUs, signal degradation Gang-scheduling, job stalls, telemetry blind spots CUDA mismatches, 
image drift, driver issues I/O bottlenecks, 
cloud misalignment, 
lack of validation 1. Infrastructure 
& Interconnect 2. Software Stack 
& Image Consistency 3. Scheduling 
& Observability 4. Storage & External Dependencies Summary table

Addressing the Visibility Gap: Clockwork Fleet Audit,
Fleet Monitoring, Workload Monitoring

From clean starts to continuous uptime: end-to-end AI fleet assurance

Provisioning Operations Provision Nodes, Network, Storage, Firmware, Base Schedule Observe, detect, troubleshoot, 
fix and optimize Infrastructure

Deploy a reproducible, known good baseline fleet to run AI workloads

Keep the fleet healthy, performant 
and cost-effective while AI jobs run

Clockwork Solution

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Fleet Audit

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  • Software checks
  • Node checks
  • Front-end network
  • Back-end GPU network validation
Clockwork Fleet Audit: Illustrative Customer Value

“I want to make sure my cluster is configured correctly before I run a week-long training job.”

“I found (i) 3 through cabling checks; (ii) 7 through cross-cluster ping6 test; BUT (iii) 3 are unique that I would not have found!”

Fleet Monitoring

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  • Runtime link failures/flaps
  • Runtime fabric topology
  • Runtime fabric performance
  • Congestion and contention monitoring
Clockwork Fleet Monitoring (out-of-band): Illustrative Customer Value

“We want to detect network failures/link flap as soon as they happen, and not when our jobs stall!”

“We want to be sure that replacement GPUs in the cloud are meeting topology/latency SLAs?”

“We’d like to track latency continuously and get alerted when it goes above our set thresholds.”

Workload Monitoring

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  • Deep workload visibility
  • Correlation of data path performance with network metrics to identify root cause of job performance
Clockwork Workload Monitoring (in-band): Illustrative Customer Value

“I ran all_reduce_perf workload twice, 1st run ~360Gbps, 2nd run only ~190Gbps. What could be the problem?”

“We saw a sudden slowdown in job performance, could it be network-related?”

Why High Precision Attribution Matters

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Out-of-band and in-band Qpair 
one-way-delays 
are very different. The workload 
was mistakenly configured to use RoCEv1 instead of RoCEv2.

AI clusters are very complex configurations with a Cambrian explosion in the number of configuration options and AI reliable runs are very sensitive to these. The ability to have an early warning indicator of failures and slowdowns down to nanosecond accuracy – aka – high precision attribution – becomes a significant time-to-market advantage.

Resilience

Accelerate AI Jobs with Real-time Resilience

Transform Your Compute Efficiency

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Disruptive Network Failures and Link Flaps 

Are Common and Expensive

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One of the most common problems encountered is Infiniband/RoCE link failure. Even if each NIC-to-leaf switch link had a mean to failure rate of 5 years, due to the high number of transceivers, it would only take 26.28 minutes for the first job failure.

Time of first job failure in brand new cluster: 
26.28 minutes

Clockwork’s Workload Failover Provides

Resilience To Link Flaps

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Link/NIC flapping Quickly detect link/NIC failure Use an alternate path Monitor failed paths and reuse them on recovery Flows contend 
for bandwidth

Link/NIC flapping

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Node Inbound
Infiniband Throughput

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Acceleration

Detecting & Eliminating Contention

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What is Contention? QPairs collide on links and contend for network bandwidth Clockwork’s Solution Workload Acceleration QPairs with contentions have high one-way delays Shift traffic from congested paths to uncongested paths

Workload Acceleration

Proven Throughput Gains Across Real-World AI Workloads

Hyperscaler with Clockwork vs Dynamic Load Balancing (DLB)

2 all-to-all jobs

The hyperscaler with Clockwork enabled has 33% more outbound throughput vs. DLB

Large Social Media Company with Clockwork vs. ECMP

2 all-to-all jobs

The large social media company with Clockwork enabled has 29% more throughput vs. ECMP

Learn More

Stop wasting GPU cycles. Start scaling smarter.
Clusters must deliver high uptime while running at maximum efficiency.

Turn your GPU clusters into a competitive advantage—not a cost center.