Hi All
I have a client who is buying a 1U single socket Supermicro server with an Epyc 7351P 16 Core processor. The application is as a small Proxmox host, running Debian VM instances for clients.
The intention is to run about 40 VM's at 128GB of RAM (32GB modules), but retaining the option of adding more disks and more RAM later to up that to +- 70 VM's with 256GB of RAM.
Is there is any good data on the performance impact of only running 4 memory channels, vs the full 8 channels?
I have seen data on Theadripper (which is "half" an Eypc processor), that some complex workloads are negatively affected by 20-30% when going from 4 channel to 2 channel memory. The speed of the memory also seems to play a significant role.
The local vendor is saying that the impact will likely only be single digit percentages, but I suspect they are treating it like an Intel server, for which memory bandwidth is not that important for CPU performance.
Thanks in advance
I have a client who is buying a 1U single socket Supermicro server with an Epyc 7351P 16 Core processor. The application is as a small Proxmox host, running Debian VM instances for clients.
The intention is to run about 40 VM's at 128GB of RAM (32GB modules), but retaining the option of adding more disks and more RAM later to up that to +- 70 VM's with 256GB of RAM.
Is there is any good data on the performance impact of only running 4 memory channels, vs the full 8 channels?
I have seen data on Theadripper (which is "half" an Eypc processor), that some complex workloads are negatively affected by 20-30% when going from 4 channel to 2 channel memory. The speed of the memory also seems to play a significant role.
The local vendor is saying that the impact will likely only be single digit percentages, but I suspect they are treating it like an Intel server, for which memory bandwidth is not that important for CPU performance.
Thanks in advance