v2.7.4 — Initial public release

GPU PCIe Diagnostic & Bandwidth Analysis — v2.7.4

Initial public release of a deterministic, hardware-level PCIe diagnostic tool for NVIDIA GPUs.

This release provides a reproducible baseline for validating GPU PCIe link health and transport behavior using only observable data.

Capabilities

• Detect negotiated PCIe generation and link width (current vs max capability)
• Measure peak Host↔Device copy bandwidth via CUDA memcpy timing
• Measure sustained PCIe utilization using NVML TX/RX counters
• Compute efficiency relative to theoretical PCIe payload bandwidth
• Emit deterministic verdicts: OK / DEGRADED / UNDERPERFORMING
• Optional read-only PCIe AER counter inspection (if exposed by platform)

Design Principles

• No BIOS or firmware modification
• No registry hacks or tuning assumptions
• No inference when data is unavailable
• Reports observable facts only

Validation

Copy timing and telemetry behavior cross-validated using NVIDIA Nsight Systems.

Scope

This tool evaluates PCIe transport behavior only.
It does not profile kernels or applications.

Source-only release.
Build artifacts and runtime logs are intentionally excluded.