Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2009-05-05 06:03:45 →
Size: 662
Editor: SamatJain
Comment:
← Revision 3 as of 2009-06-27 05:45:00 → ⇥
Size: 1066
Editor: SamatJain
Comment:
Deletions are marked like this. Additions are marked like this.
Line 18: Line 18:

== BIOS options ==

Some important BIOS options I use:

 * Memory settings
  * '''MTRR''': Continuous
  * '''Node interleaving''': Disabled (enables NUMA, effectively reducing latency for certain memory accesses)
  * '''Software memory hole''': Enabled (remaps PCI DMA address space away from 4 GB, which effectively makes more RAM available to the OS)
  * '''Hardware memory hole''': Enabled

BIOS updates

The Supermicro website does not list older BIOSes. It also does not list what has changed within newer BIOS releases, though Supermicro's support is fairly forthcoming with the information.

A list of BIOSes I have collected, and their changelogs:

1.1b

  1. Fix a FAN control malfunction problem after AC loss.
  2. Enable workstation, quiet, super quiet fan control mode for 4-pin fan only for revision 3.1 board.
  3. Change revision to 1.1b.
  4. Pass BIOS CHECK 4.0.0

1.1c

  1. Change FAN control by using FANOUT1 and FANOU2 instead of FANOUT2 and FANOUT3 according to hardware
  2. Change revision to 1.1C

BIOS options

Some important BIOS options I use:

  • Memory settings

    • MTRR: Continuous

    • Node interleaving: Disabled (enables NUMA, effectively reducing latency for certain memory accesses)

    • Software memory hole: Enabled (remaps PCI DMA address space away from 4 GB, which effectively makes more RAM available to the OS)

    • Hardware memory hole: Enabled

SamatsWiki: SupermicroH8DCE (last edited 2009-07-14 07:28:01 by SamatJain)