GeForce GTX 1080 Ti 4枚

GeForce GTX 1080 Ti ４枚で同時に bandwidthTest してみました。。。

# ./bandwidthTest --device=all
[CUDA Bandwidth Test] - Starting...

!!!!!Cumulative Bandwidth to be computed from all the devices !!!!!!

Running on...

Device 0: GeForce GTX 1080 Ti
Device 1: GeForce GTX 1080 Ti
Device 2: GeForce GTX 1080 Ti
Device 3: GeForce GTX 1080 Ti
Quick Mode

Host to Device Bandwidth, 4 Device(s)
PINNED Memory Transfers
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 48236.7

Device to Host Bandwidth, 4 Device(s)
PINNED Memory Transfers
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 51457.5

Device to Device Bandwidth, 4 Device(s)
PINNED Memory Transfers
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 1388806.5

Result = PASS

◯計算サーバ
CPU : Intel(R) Xeon(R) Gold 5120 CPU @ 2.20GHz x 2
Memory：256GB
GPU : GeForce GTC 1080 Ti x 4
OS : Linux CentOS 7.5