LinkedIn

Palo Alto, Calif. – October 05, 2026 -- Clockwork.io has raised $31 million in new funding and secured production deployments at LinkedIn and Together AI, bringing its total funding to $73 million as enterprises seek to curb GPU downtime during large-scale AI training.

LinkedIn prevents tens of thousands of GPU-hours of downtime monthly

LinkedIn has deployed Clockwork.io's LinkPass network fault-tolerance software across its AI infrastructure fleet. Raghu Hiremagalur, SVP, CTO Infrastructure at LinkedIn, said a single InfiniBand NIC flap previously could remove an eight-GPU server from service, while a switch port flap could double the impact to 16 GPUs. LinkPass now automatically reroutes traffic onto healthy paths, letting jobs continue uninterrupted while faults are repaired.