Posts by Kaiping Lu
RDC and RocProfiler Compared to DCGM for Commonly Used Metrics
- 07 July 2026
Modern GPU applications often need lightweight, repeatable performance checks that can run outside a full profiling session. A developer might want to confirm whether a workload is throttling, whether data is moving across GPU interconnects as expected, whether ECC counters are increasing, or whether the GPU is spending enough time on useful compute work. These checks are especially useful during application tuning, cluster validation, and regression testing.
Optimizing MI300X Inter-Chiplet Communication via the RCCL Tuner API
- 30 June 2026
The AMD Instinct MI300X’s chiplet architecture introduces non-uniform communication paths when running in CPX/NPS4 mode — and RCCL default algorithms don’t account for this topology.