While the 8x NVIDIA A100 GPU “Delta” platform with NVSwitch got a lot of airtime during the Ampere launch, it was not the only platform being launched today by NVIDIA. The 4x GPU “Redstone” platform is a smaller NVLink mesh platform that is designed to be a lower-cost option. The NVIDIA A100 “Redstone” HGX platform is important since it is a smaller and less complex version of the HGX A100 platform. The Redstone platform incorporates 4x SXM NVIDIA A100 GPUs onto a PCB. As we saw with the Tesla A100 overview, the new GPUs have 12x NVlinks per GPU. Each NVLink provides 50GB/s of GPU-to-GPU bandwidth for 600GB/s total. Redstone takes those 12 NVLinks and splits them into three groups. Instead of the NVIDIA NVSwitch solution we see on the HGX A100 platform, we get a mesh topology without switching. NVIDIA has offered both switched and non-switched systems for some time. This type of topology, NVIDIA has been using for years and is the basis for many important compute nodes. For ...