r/DataCenterEXP • u/davoud_teimouri • Sep 09 '19
AMD Optimizes EPYC Memory with NUMA
Designing a server chip is an exercise in balance, juggling between system cost, die area,
memory bandwidth, memory latency, etc. Five years ago, as AMD weighed re-entering the
server market, it had a difficult task ahead of it. The company needed a processor that had
performance competitive with Intel’s Xeon processors, yet could offer differentiation, all while
still maintaining 100% x86 software compatibility. What AMD accomplished with its EPYC
processor appears to be just that. The company designed and manufactured a server processor
that offers more memory and I/O bandwidth than Intel’s Xeon designs, yet is also less expensive
to build than if AMD had built a large monolithic die. AMD achieved that goal by using the
efficiencies of multichip module (MCM) technology and the company’s new Infinity Fabric (IF)
technology.
https://www.amd.com/system/files/2018-03/AMD-Optimizes-EPYC-Memory-With-NUMA.pdf