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NPU Board Components
Figure 2-19 shows the connectors on the NPU board.
Figure 2-19 Connectors on the NPU board
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1 |
NPU2 M8 |
2 |
NPU2 M7/M10 |
3 |
NPU3 M8 |
4 |
NPU3 M7/M10 |
5 |
NPU4 M8 |
6 |
NPU4 M7/M10 |
7 |
NPU1 M8 |
8 |
NPU1 M7/M10 |
9 |
Copper clips (J040) |
10 |
Copper clips (J041) |
The iBMC displays the physical position of each NPU on the mainboard, and the npu-smi tool displays the logical position.
Table 2-11 Mapping between NPU IDs on the iBMC and npu-smi
No. |
NPU ID on the iBMC |
NPU ID on the npu-smi |
|
|---|---|---|---|
1 |
NPU Board1 (Left NPU board from rear view) |
NPU1 |
NPU3 |
2 |
NPU2 |
NPU2 |
|
3 |
NPU3 |
NPU1 |
|
4 |
NPU4 |
NPU0 |
|
5 |
NPU Board2 (Right NPU board from rear view) |
NPU5 |
NPU7 |
6 |
NPU6 |
NPU6 |
|
7 |
NPU7 |
NPU5 |
|
8 |
NPU8 |
NPU4 |
|
- The Ascend AI Processor is integrated on the NPU board and cannot be replaced separately.
- The device supports two NPU boards. Each NPU board houses four NPUs.
- The physical memory sizes of chips 0 to 7 are the same. The device OS occupies some memory of chips 3 and 7. Therefore, the actual available memory of chips 3 and 7 displayed in the npu-smi tool is less than that of other chips.