Sun Server X2-8 (formerly Sun Fire X4800 M2) Product Notes

System Posts CPU Fault and Fails to Boot on System With Six Sun InfiniBand Dual Port 4x QDR PCIe Low Profile Host Channel Adapter M2 Cards (22536804)

A system equipped with six Sun InfiniBand Dual Port 4x QDR PCIe Low Profile Host Channel Adapter M2 Cards might post CPU faults and fail to boot.

Workaround

1. Access the BIOS Setup Utility.

2. Navigate to RC Settings > QPI and change:

   MMIOH Size per IOH from 2Gb to 4Gb (the default is 2Gb).

3. Navigate to RC Settings > Chipset > NorthBridge Configuration and change:

   PCIE-MMIO-64 Bits Support to Enabled (the default is Disabled).

4. Save your changes and exit the BIOS Setup Utility.

5. Reboot the server.