Hi …,
I would like to know whether a 100Gbps NIC is able to achieve full 100Gbps speeds, without RoCE / RDMA / VMA.
Consider a compute farm like scenario.
Say, there is a NAS with a 100Gps NIC, connected to an SN2100 Switch.
The 100Gbps switch is in turn connected to 4 x 48 Port 1Gbps switches using a 40G links to each switch.
i.e. 192 x 1Gbps client computers
|----------| |-----------| —40G—> | 48 Port 1G Switch |
| NAS | —100G NIC —> |SN2100| —40G—> | 48 Port 1G Switch |
|Storage| | Switch | —40G—> | 48 Port 1G Switch |
|----------| |-----------| —40G—> | 48 Port 1G Switch |
Now, if all the 192 x 1Gbps clients were to read files from the storage at the same time, will the NAS NIC be able to serve at 100Gbps (assuming that there are no bottlenecks in the storage system itself)?
Regards,
Indivar Nair