PowerEdge Rack and Tower Server Masters - AMD Server Memory.pptx
- 1. PowerEdge Rack and Tower Server Masters: AMD Server Memory Technical Sales
- 2. 2 Internal Use - Confidential © Copyright 2019 Dell Inc Learning objectives This course has been designed to help you: – EPYC server Memory Options – Configuration Examples / Gotchyas etc
- 3. AMD server memory overview and options
- 4. 4 Internal Use - Confidential 4 © Copyright 2019 Dell Inc 2nd Generation AMD EPYCTM *Perf projections based on AMD internal 20Jan2019. Subject to change. 14nm Zen cores 14nm IO/Mem die 7nm Zen2 chiplets Rome: Single IO/Mem die removes internal bottleneck for lower latency 20% memory speed increase: 2666MHz to 3200MHz Double the speed per socket with xGMI-2 (~16GT/s) MULTI-CHIP DESIGN BENEFITS Dedicated I/O+mem die defaults to 1 NUMA domain • Flexibility to also configure 2 or 4 NUMA domains • 30ns improvement in latency for non NUMA aware apps (analytics, HPC – NamD, Linpack) 2x performance* Naples: I/O and memory spread across each Zen core creates lots of internal traffic
- 6. 6 Internal Use - Confidential 6 © Copyright 2019 Dell Inc Memory Technologies Rome like Naples has 8 memory controllers, one per channel. Up to 2 DIMMs can be populated per channel. DIMMs per Channel Maximum Speed Theoretical Bandwidth per Channel 1 3200 MT/s 25.6 GB/s 2 2933 MT/s 23.4 GB/s Capacity DIMM Type Ranks DRAM Width DRAM Package Type 8GB RDIMM 1R x8 8Gb SDP 16GB RDIMM 2R x8 8Gb SDP 32GB RDIMM 2R x4 8Gb SDP 64GB RDIMM 2R x4 16Gb SDP 128GB LRDIMM 8R x4 8Gb 4H-3DS
- 7. 7 Internal Use - Confidential 7 © Copyright 2019 Dell Inc R6515 DDR4: Up to 16x DDR4 RDIMM, LRDIMM (2TB), bandwidth up to 3200 MT/S R6525 R7525 R7515 DDR4: Up to 16x DDR4 RDIMM, LRDIMM (2TB), bandwidth up to 3200 MT/S DDR4: Up to 32x DDR4 RDIMM, LRDIMM (4TB), bandwidth up to 3200 MT/S DDR4: Up to 32x DDR4 RDIMM, LRDIMM (4TB), bandwidth up to 3200 MT/S 1S RACKS 2S RACKS C6525 DDR4: Up to 16x DDR4 RDIMM, LRDIMM (2TB), bandwidth up to 3200 MT/S C-SERIES Expanding the New Dell EMC PowerEdge Servers with the 2nd Generation AMD EPYCTM | | MULTI - CLOUD | | EMERGING WORKLOADS
- 8. 8 Internal Use - Confidential 8 © Copyright 2019 Dell Inc Memory population rules DIMMs should be populated starting from the A1 slot up to the A16 slot (for two DIMM per channel systems.) For two CPU socket systems, the second CPU is populated mirroring the first socket and slots are labeled from B1 up to B16. No mixing DIMM capacities. Minimum Recommend 4 DIMMs per CPU. Maximum Performance 8 DIMMs per CPU.
- 9. 9 Internal Use - Confidential Thank you