OSS OSS-PCIE-4UV-5slot, Руководство пользователя

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One Stop Systems
4U Value 5slot G3 Expansion Unit 89
10.8 Expansion System fails to turn ON
Issue:
The 4U Value expansion system is not powering ON after replacing the target and host cards.
Troubleshooting steps:
1. Shutdown the system (computer and expansion unit).
2. Disconnect the link cables.
3. Remove the Target and Host cards. Check the target and host cards, make sure you have the correct model OSS-PCIe-HIB38-x16-F.
4. Check the Dipswitch settings on the target card. The correct settings: 1=OFF, 2=ON, 3=OFF, 4=ON , 5=OFF, 6=OFF
5. Check the Dipswitch settings on the host card. The correct settings: 1=ON, 2=OFF, 3=OFF, 4=OFF, 5=OFF, 6=ON
6. Reinstall the target card (plug the card into target slot).
7. Reinstall the host card (plug the card into x16 Gen3 slot).
8. Make sure the target and host cards are fully seated in the slot and firmly secured.
9. Reconnect the link cables. Make sure the cables are properly connected.
10. Power UP the host computer and expansion system will turn ON.
11. If the expansion system is still not turning ON do the following:
a. Move the host card to another PCIe slot (in the host computer). Make sure the slot is x16 Gen3.
b. Try another computer.
c. Try another link cable (if available).
d. Try another set of adapter cards.
e. Send the unit for service / repair. You may be having a faulty boards.
10.9 What is the minimum RAM needed to run a single or multiple GPUS?
Questions:

What is the minimum RAM needed to run a single or multiple GPUS in the expansion system?

For example if I intend to use 4X 2080 or 1080 what would be the RAM needed and why?

What happens if you have less memory?
Answer:
Always check the general system and hardware requirements as well as optimal CPU and GPU settings when using GPUs.
For example, if you are using four 1080ti and 2080ti GPUs and each GPU requires 11GB. The memory in the GPU is mirrored in system MMIO
(memory mapped I/O) for each GPU in the system. In order for these four GPUs and host system to operate properly, a total of 44G of host
system memory dedicated to the GPUs is needed during system boot.
The system BIOS, during POST, will typically check for equivalent host system memory to be able to support PCI address space. The host
computer should match or exceed the memory requirements of the total GPU PCI address space to achieve better performance and avoid
problems that may cause the entire system to malfunction.
If you have less memory, the system will fail to boot. Random crashes and other unexpected errors can occur if GPU memory requirements are
not met or the system may not boot at all if the BIOS checks for and sees a mismatch on PCI address space and host system memory capacity.
The BIOS will fail with a message of "Insufficient resources", some will just freeze. Other will finish booting but will not enumerate the GPUs,
Every server is different, issue will vary.
For everything to work properly you need the memory for the GPUS plus enough for the Operating System. Check with GPU manufacturers for
details on memory and systems requirements.
Memory-Mapped I/O Greater than 4 GB:
Increasing the size of the memory may not be enough for some systems, adjusting the settings in BIOS of the host systems accordingly is
required. (i.e. Enable “Above 4G Memory” and increase MMIO space).