1.2 Tb/s Packet Processing of Radio Telescope Data on GPU
Learn about groundbreaking packet processing techniques for radio telescope data in this technical presentation from ASTRON's John Romein. Discover how the NVIDIA Grace Hopper Superchip enables unprecedented 1.2 Tb/s data processing rates by eliminating PCIe bottlenecks, allowing a single GPU to connect with multiple high-speed NICs. Explore the implementation details of streaming 1196Gb/s of Ethernet packets, including buffering, channelization, and signal correlation on GPUs. Gain insights into key technological advances like GPU support in DPDK, packet splitting capabilities, direct DMA payload transfers, and efficient pktmbuf cache utilization. Examine performance results and energy optimization strategies that achieve significant power reductions for both CPU and GPU operations, ultimately enabling more powerful radio telescope implementations.