NVLink and InfiniBand NDR Fabric Guide
Multi-GPU training performance depends on how GPUs talk to each other and how nodes share gradients and checkpoints. This guide outlines when NVLink domains, InfiniBand NDR, and Ethernet RoCE matter, and how NTS sizes them into a BOM.
Design questions we settle early
- GPU count per node and whether NVLink or PCIe is the right domain
- Node-to-node fabric for NCCL scale-out
- Storage attach path so checkpoints do not starve training
- Cable plant, optics, and switch oversubscription for the cell
NTS engineers map fabric choices to power, cooling, and contract line items. Continue with rack integration or request a fabric review.
Working with NTS
Share workload notes, target GPU class, power limits, and the contract vehicle you intend to use. NTS returns a validated BOM, staging options, and a quote package your contracting office can review. USA build and burn-in keep serial-tracked acceptance records with the shipment.
Related resources include the AI and GPU infrastructure guide, public-sector procurement guide, contract vehicles directory, and remote POC test drive when you need evidence before PO. Contact NTS to schedule an architecture review or request a CLIN-aligned quote.
Next steps
Bring workload notes, power limits, and your preferred contract vehicle. NTS returns a validated BOM, staging scope, and a quote package ready for contracting review. USA build and burn-in keep acceptance records with the shipment so rack integration starts from a known-good image.
NTS is a USA-based integrator: configure in Fremont, validate power and fabric assumptions, then ship with documentation your contracting and operations teams can use without rediscovering the BOM.
If you already have a draft part list, send it with power limits and delivery constraints. NTS will mark risks early—PCIe budget, PDU draw, fabric oversubscription—before the purchase order locks the wrong assumptions.
NTS documents firmware baselines, BMC settings, and acceptance criteria with every shipment so operations and contracting teams share one source of truth after the rack lands.
Scale-out stays coherent when the first node and the tenth rack share the same image, fabric assumptions, and spare matrix—that is the NTS delivery model.
New Tech Solutions (RackMountNTS) delivers engineer-to-order rackmount platforms with validation in Fremont, California—power, cooling, firmware, drivers, and acceptance documentation before shipment.
Federal, defense, and SLED buyers can align the same bill of materials to SEWP V, ITES-4H, GSA MAS, or cooperative vehicles when the statement of work allows. Commercial and research teams receive the same staging discipline without the CLIN wrapper.
Share workload notes, rack constraints, and delivery windows through contact NTS or Request a Quote. Related guides: contracts, AI and GPU infrastructure, and BOM validation.
