no.

[root@gh200 nvbandwidth]# nvidia-smi | grep GH200

| 0 NVIDIA GH200 480GB On | 00000009:01:00.0 Off | 0 |

[root@gh200 nvbandwidth]# ./nvbandwidth | grep -E 'host_to_device_memcpy_sm|device_to_host_memcpy_sm' | grep ^SUM

SUM host_to_device_memcpy_sm 357.45

SUM device_to_host_memcpy_sm 352.05

[root@gh200 nvbandwidth]#

d2d is much higher:

[root@gh200 cuda-samples]# ./bin/sbsa/linux/release/bandwidthTest --dtod | grep -B1 32000

   Transfer Size (Bytes) Bandwidth(GB/s)
   32000000   2294.8

[root@gh200 cuda-samples]#

Well, device to device is technically doubled because you have a read and a write. But yes

No. D2D is arroubd 3TB/s