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Chapter 3: Maintenance and Component Installation
3.4 Graphic Processor Units
The system supports eight Volta SXM2 V100 GPUs installed on the X10DGO-SXMV add-
on module mounted on the the GPU chassis tray and connected to the motherboard by the
bridge boards.
GPU Mapping
The GPU numbering shows differently, depending on the interface. There is the silk screen
label on the board, the GPU number in IPMI, and the number referenced in the operating
system. See the relationships in the table below.
GPU Mapping Table
IPMI,
Label
GPU1
GPU2
GPU3
GPU4
GPU5
GPU6
GPU7
GPU8
OS
GPU0
GPU1
GPU2
GPU3
GPU4
GPU5
GPU6
GPU7
Bus
No.
1A:00.0
1B:00.0
3D:00.0
3E:00.0
88:00.0
89:00.0
B2:00.0
B3:00.0
The GPU connections are shown below.
Figure 3-4. GPU Connections
(GPU numbering as in IPMI)
GPU5
GPU4
GPU6
GPU7
CPU1
GPU1
GPU0
GPU2
GPU3
CPU0
INTEL
INTEL
0
1
3
2
3
3
3
0
1
2
2
2 1
1
0
0
1 2
3
0
3
2
3
2
1
1
3
2 0
1
0
0
PEX9765
PCIE SLOT X16
PEX9765
PEX9765
PEX9765
6
1
X
T
O
L
S
E
I
C
P
6
1
X
T
O
L
S
E
I
C
P
6
1
X
T
O
L
S
E
I
C
P
FROM MB
FROM MB
PCIE x16
NVLINK x8 (Pascal)
4
4
5
4
5
5
4
5
5
5
4
4
4
5
5
4
NVLINK x8 (Volta)
and
For Volta V100, NVLink connections are represented above by solid and dashed green lines.
