What Is Integrated Systems Test?_
This test goes beyond individual component checks to verify end-to-end functionality, such as GPU-to-GPU communication across the NVLink spine, correct liquid cooling loop flow and temperature regulation, and proper network connectivity via InfiniBand or Ethernet. It typically includes stress runs and fault injection to ensure the system meets performance and reliability criteria before handover to the customer. The test is performed after rack assembly, cabling, and liquid cooling commissioning are complete.
Technical Details
The test suite includes running a distributed GPU benchmark (e.g., collective communication patterns) across all GPUs in the rack to confirm NVLink spine performance and scale-out fabric connectivity. Liquid cooling parameters—such as coolant flow rate, inlet/outlet temperatures, and pressure differentials—are monitored against OEM-specified thresholds during sustained load. Network interfaces (e.g., OSFP or QSFP) are tested for link stability and error counts using standard diagnostic tools. Any failures are isolated to the subsystem level (e.g., a single GPU, cable segment, or cooling manifold) for targeted remediation.
How Leviathan Systems Works with Integrated Systems Test
For Leviathan Systems field crews, the Integrated Systems Test is the final validation step after rack assembly, structured cabling, and liquid cooling hookup; it confirms that the entire rack is ready for customer acceptance. We run this test on-site using Leviathan’s portable test rig, which simulates production workloads and logs all metrics for the commissioning report.
Related service
Network Testing & Commissioning →