46 lines
1.2 KiB
Text
46 lines
1.2 KiB
Text
Diagnostic host topology (RunPod EUR-IS-1, CUDA 13.0)
|
|
|
|
$ nvidia-smi topo -m
|
|
GPU0 GPU1 NIC0 NIC1 CPU Affinity NUMA Affinity GPU NUMA ID
|
|
GPU0 X NODE SYS SYS 64-127,192-255 1 N/A
|
|
GPU1 NODE X SYS SYS 64-127,192-255 1 N/A
|
|
NIC0 SYS SYS X PIX
|
|
NIC1 SYS SYS PIX X
|
|
|
|
$ nvidia-smi topo -p2p r
|
|
GPU0 GPU1
|
|
GPU0 X OK
|
|
GPU1 OK X
|
|
|
|
$ nvidia-smi topo -p2p w
|
|
GPU0 GPU1
|
|
GPU0 X OK
|
|
GPU1 OK X
|
|
|
|
$ nvidia-smi nvlink -s
|
|
(no output; no NVLink devices or links exposed)
|
|
|
|
NCCL_DEBUG=INFO NCCL_DEBUG_SUBSYS=INIT,GRAPH,P2P,COLL summary:
|
|
|
|
- NCCL version 2.27.7+cuda13.0
|
|
- GPU path classified as PHB at 48.0 GB/s by NCCL topology
|
|
- 4 collective channels, 4 P2P channels, 2 P2P channels per peer
|
|
- 0 NVLS channels
|
|
- P2P chunksize 131072
|
|
- Check P2P Type isAllDirectP2p 1
|
|
- GPU 0 -> GPU 1 via P2P/CUMEM
|
|
- GPU 1 -> GPU 0 via P2P/CUMEM
|
|
- Connected all rings, PXN 0, GDR 1
|
|
|
|
The first benchmark allocation differed:
|
|
|
|
$ nvidia-smi topo -m
|
|
GPU0 GPU1 CPU Affinity NUMA Affinity GPU NUMA ID
|
|
GPU0 X SYS 0-55,112-167 0 N/A
|
|
GPU1 SYS X 56-111,168-223 1 N/A
|
|
|
|
$ nvidia-smi nvlink -s
|
|
GPU 0: NVIDIA RTX PRO 6000 Blackwell Server Edition
|
|
Device does not have or support Nvlink
|
|
GPU 1: NVIDIA RTX PRO 6000 Blackwell Server Edition
|
|
Device does not have or support Nvlink
|