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I apologize, but I don't have specific information about enabling Large BAR (Base Address Register) support on AWS EC2 G4ad instances. The sources provided don't contain details about this particular feature or how to enable it on G4ad instances.
G4ad instances are powered by AMD Radeon Pro V520 GPUs and are designed for graphics-intensive applications. They offer high performance for workloads such as remote graphics workstations, game streaming, and rendering. However, the available information doesn't mention Large BAR support or how to enable it.
In general, EC2 instances don't allow direct access to BIOS settings, as these are managed by AWS. Features and optimizations are typically handled at the instance level by AWS.
For GPU optimizations on EC2 instances, there are some general steps you can take, such as disabling autoboost and setting GPU clock speeds to their maximum frequency. However, these optimizations are primarily described for NVIDIA GPU instances and may not apply directly to the AMD GPUs in G4ad instances.
Given that you're encountering a specific issue with Large BAR support, I would recommend reaching out to AWS support directly. They would have the most up-to-date and accurate information about the capabilities of G4ad instances and any potential workarounds or solutions for enabling Large BAR support if it's possible on these instances.
Sources
Amazon EC2 G4 Instances — Amazon Web Services (AWS)
Optimize GPU settings on Amazon EC2 instances - Amazon Elastic Compute Cloud
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