8+ GPU BIOS hang issue on sabertooth 990fx r2.0 mobo

[ptunstall]

Here is link to Asus FAQ/Manual which says it should be ON only for TESLA cards.

http://www.asus.com/support/FAQ/1004170 ... 1461515401

Let me go turn it off and I'll let you know what happens. Stand by!

[ptunstall]

As I suspected the BIOS beeps at me angrily and resets with "Above 4G Turned off". You simply need to be in 64 bit decoding space for the amount of PCI devices we're trying to push.

[Lewis]

Interesting, thanks for info.

[ptunstall]

Look at this fancy little message that showed up when i went back to turn "Above 4G Decoding" back on.

[Lewis]

Very interesing, Yesterday i was bootig with 4 GPUs on my DualXoen WS board and i went to bios to turn ON 4F Decoding and after saving bios/restart MB was just clicking and nothing was booting/showing so i had to do CelarCMOS to even go into BIOS again and turn it off. But then again my MB has Jumper on MBO for Enabling TESLA so it might be that it's different than yours.

[ptunstall]

What mobo is it?

[Lewis]

What mobo is it?

Asus Z10-PEd8 WS
https://www.asus.com/Motherboards/Z10PED8_WS/

[smicha]

I had to enable 4G for 6 and 7 gpus - no way to make asus shit boot without 4g enabled.

[ptunstall]

so with 10 GPUs I get this score: https://render.otoy.com/octanebench/sum ... GTX+980+Ti 2nd from the top so that's a bit of a victory dance until I try to add an 11th card and I get that PCI resource error again... Dug further into the BIOS settings and discovered a setting called : MMCFG Base with a default value of 0x80000000 which is 2GBs... That's the lowest that setting will go but researching PCIE CFG and MMIO lead me to this: http://electronics.stackexchange.com/qu ... erent-from which possibly shed some light on things a tiny little bit... I'm going to attempt to add more RAM and see what happens...