MRDIMM 8800MT/s vs. DDR5-6400 Memory Performance With Intel Xeon 6
👁 QMCPACK benchmark with settings of Input: Li2_STO_ae. Xeon 6980P 2P - MRDIMM-8800 was the fastest.
For smaller HPC mini apps and workloads less sensitive to memory bandwidth, the MRDIMM gains were less impactful but still measurable.
Stressing HPCG on the dual Intel Xeon 6 server with MRDIMMs was very exciting. Similar to Intel's reported MRDIMM benefits, running HPCG with MRDIMM 8800 memory yielded 33% better performance than DDR5-6400!
There were some pretty nice gains out of the MRDIMM-equipped server in NPB.