Magma EB3600-AB, User Manual

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Magma
EB3600-AB | Chapter 2 Hardware Installation 39
PCIe card Memory Requirements
Always check the general system and hardware requirements as well as optimal CPU and GPU settings
when using High Power GPUs. For example, you are using five XYZ brand Doublewide GPUs and each GPU
requires 16GB of PCI Memory Address space. In order for these 5 XYZ GPUs to operate properly, a total of
80G of host system memory 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.
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. Check with GPU manufacturers for details on memory and systems requirements.
Memory-Mapped I/O Greater than 4 GB:
All supported GPU cards require enablement of the BIOS setting that allows greater than 4 GB of memory-
mapped I/O (MMIO).
Standalone Server: If the server is used in standalone mode, this BIOS setting is enabled by default:
Advanced > PCI Configuration > Memory Mapped I/O Above 4 GB [Enabled]