Re: amdgpu with 8+ cards for GPU mining?

2018-03-07 Thread Christian König
Well that is very interesting use case you got there. Just out of curiosity, can we get a dmesg and the content of /proc/iomem from that working system? Thanks, Christian. Am 07.03.2018 um 02:02 schrieb Joseph Wang: Thanks for all of the help.  I've purchased a Gigabyte GA-B250-Fintech

Re: amdgpu with 8+ cards for GPU mining?

2018-03-06 Thread Joseph Wang
Thanks for all of the help. I've purchased a Gigabyte GA-B250-Fintech motherboard, and was able to get 9 cards running on the system. So the 8 card limit does appear to be a BIOS issue with the ASUS B250 Mining Expert Here are some of my experiences with mining motherboards.

Re: amdgpu with 8+ cards for GPU mining?

2018-02-19 Thread Christian König
Any possibility of contacting the Windows driver people to see how they managed to work around the bios issues? Well I have strong doubts that this our windows people are actually involved in this. This could be fixed our worked around by a motherboard driver, but not by the graphics driver.

Re: amdgpu with 8+ cards for GPU mining?

2018-02-19 Thread Christian König
Hi Joseph, as a band aid you can try the attached patch. It should at least fix the crash at hand and allow amdgpu to continue with the boot process. Regards, Christian. Am 19.02.2018 um 14:13 schrieb Christian König: Hi Joseph, and here is the root cause of the problem: 0b:00.0 VGA

Re: amdgpu with 8+ cards for GPU mining?

2018-02-19 Thread Christian König
Hi Joseph, and here is the root cause of the problem: 0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/580] (rev ef) (prog-if 00 [VGA controller])     Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 0b31     Control: I/O- Mem-

Re: amdgpu with 8+ cards for GPU mining?

2018-02-16 Thread Christian König
Hi Joseph, I think I've figured out why you run into problems with this hardware configuration. The BIOS doesn't assign enough memory address spaces to the PCI root hub for this to work. There is a 2,5GB window below the 4GB limit, starting at address 0x5800: 5800-f7ff : PCI

Re: amdgpu with 8+ cards for GPU mining?

2018-02-16 Thread Christian König
Am 16.02.2018 um 19:17 schrieb Joseph Wang: Here are the logs for the eight card case. cc'ing the Mageia linux group since I'm using that distribution for development. Three questions: 1) (this might be for the mageia people) What's the easiest way of booting up the system without loading

Re: amdgpu with 8+ cards for GPU mining?

2018-02-16 Thread Christian König
Hi Joseph, 04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/580] (rev e7) (prog-if 00 [VGA controller])     Subsystem: Micro-Star International Co., Ltd. [MSI] Device 3418     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-

Re: amdgpu with 8+ cards for GPU mining?

2018-02-16 Thread Christian König
Hi Joseph, please provide the output of lspci - when the driver is not loaded as an attachment. Additional to that a full dmesg as a text file attachment with the crash would be helpful, you should still be able to ssh into the system even when the driver crashed. That looks strongly