Memory bus width reporting

[bmt-labs]

Have a pair of ASRock B60 Creator and curious why the xpu-smi output is indicating a different memory bus width than what's on the hardware spec for the card

+-----------+--------------------------------------------------------------------------------------+
| Device ID | Device Information |
+-----------+--------------------------------------------------------------------------------------+
| 0 | Device Type: GPU |
| | Device Name: Intel(R) Graphics [0xe211] |
| | PCI Device ID: 0xe211 |
| | Vendor Name: Intel(R) Corporation |
| | SOC UUID: 00000000-0000-000c-0000-0000e2118086 |
| | Serial Number: unknown |
| | Core Clock Rate: 2400 MHz |
| | Stepping: A0 |
| | SKU Type: Production PRQ |
| | |
| | Driver Version: 0B2F838753C30D8D0999ECD |
| | Kernel Version: 6.14.0-1011-intel |
| | GFX Firmware Name: GFX |
| | GFX Firmware Version: BMG__21.1177 |
| | GFX Firmware Status: normal |
| | GFX Data Firmware Name: GFX_DATA |
| | GFX Data Firmware Version: 0x5 |
| | |
| | PCI BDF Address: 0000:0c:00.0 |
| | PCI Slot: PCIEX16_1 |
| | PCIe Generation: 5 |
| | PCIe Max Link Width: 8 |
| | PCIe Max Bandwidth: 31.51 GB/s |
| | |
| | Memory Physical Size: 24480.00 MiB |
| | Max Mem Alloc Size: 23256.00 MiB |
| | ECC State: disabled |
| | Number of Memory Channels: 4 |
| | Memory Bus Width: 128 |
| | Max Hardware Contexts: 65536 |
| | Max Command Queue Priority: 0 |
| | |
| | Number of EUs: 160 |
| | Number of Tiles: 1 |
| | Number of Slices: 5 |
| | Number of Sub Slices per Slice: 4 |
| | Number of Threads per EU: 8 |
| | Physical EU SIMD Width: 16 |
| | Number of Media Engines: 2 |
| | Number of Media Enhancement Engines: 2 |
| | |
| | Number of Xe Link ports: N/A |
| | Max Tx/Rx Speed per Xe Link port: N/A |
| | Number of Lanes per Xe Link port: N/A |
+-----------+--------------------------------------------------------------------------------------+

+-----------+--------------------------------------------------------------------------------------+
| Device ID | Device Information |
+-----------+--------------------------------------------------------------------------------------+
| 1 | Device Type: GPU |
| | Device Name: Intel(R) Graphics [0xe211] |
| | PCI Device ID: 0xe211 |
| | Vendor Name: Intel(R) Corporation |
| | SOC UUID: 00000000-0000-0010-0000-0000e2118086 |
| | Serial Number: unknown |
| | Core Clock Rate: 2400 MHz |
| | Stepping: A0 |
| | SKU Type: Production PRQ |
| | |
| | Driver Version: 0B2F838753C30D8D0999ECD |
| | Kernel Version: 6.14.0-1011-intel |
| | GFX Firmware Name: GFX |
| | GFX Firmware Version: BMG__21.1177 |
| | GFX Firmware Status: normal |
| | GFX Data Firmware Name: GFX_DATA |
| | GFX Data Firmware Version: 0x5 |
| | |
| | PCI BDF Address: 0000:10:00.0 |
| | PCI Slot: PCIEX16_2 |
| | PCIe Generation: 5 |
| | PCIe Max Link Width: 8 |
| | PCIe Max Bandwidth: 31.51 GB/s |
| | |
| | Memory Physical Size: 24480.00 MiB |
| | Max Mem Alloc Size: 23256.00 MiB |
| | ECC State: disabled |
| | Number of Memory Channels: 4 |
| | Memory Bus Width: 128 |
| | Max Hardware Contexts: 65536 |
| | Max Command Queue Priority: 0 |
| | |
| | Number of EUs: 160 |
| | Number of Tiles: 1 |
| | Number of Slices: 5 |
| | Number of Sub Slices per Slice: 4 |
| | Number of Threads per EU: 8 |
| | Physical EU SIMD Width: 16 |
| | Number of Media Engines: 2 |
| | Number of Media Enhancement Engines: 2 |
| | |
| | Number of Xe Link ports: N/A |
| | Max Tx/Rx Speed per Xe Link port: N/A |
| | Number of Lanes per Xe Link port: N/A |
+-----------+--------------------------------------------------------------------------------------+

[eero-t]

Have a pair of ASRock B60 Creator and curious why the xpu-smi output is indicating a different memory bus width than what's on the hardware spec for the card

If there's no way to detect that, value needs to hard-coded to driver per PCI ID, and if it does not have that, maybe it's showing some fallback value for the GPU family...

Do you have up to date level-zero driver: https://github.com/intel/compute-runtime/releases ?

(In any case, this would be rather driver i.e. compute-runtime project bug than XPUM one.)