Simply stating that a module or system supports 100 Gbps is, by itself, insufficient for ensuring the full benefits of the claim. If a vendor’s datasheet for a VPX plug-in card (PIC) or system states 100 Gbps support but is unable to fully utilize the potential of this high-speed connectivity, that claim, while perhaps technically accurate at some sub-level, overstates the product’s ability to deliver the full benefits, without system bottlenecks, that 100 Gbps promises.
At face value, a vendor’s claim to support 100 Gbps technology implies 2.5x faster <something> compared to 40 Gbps technology and 10x faster <something> compared to 10 Gbps technology. In an ideal world, the mathematical relationship between the numbers 40 and 100 will result in 2.5x better performance. Likewise, going from 10 to 100 should yield a 10x performance increase. Unfortunately, the real world does not work like that.
A 16-core laptop processor does not make a person able to work 4x faster when editing documents compared to their previous 4-core laptop. Increasing one’s home Internet speed from 50 Mbps to 150 Mbps will not result in Amazon web pages loading 3x quicker. Neither will connecting a computer at 10 Gbps to a corporate network result in application file saves that are 10x quicker than a 1 Gbps connection.
This whitepaper explores 100 Gbps technology within the VPX ecosystem, highlighting that performance goes beyond speed metrics. It examines how improved performance involves faster solution times, higher fidelity information, and better system integration—each crucial for effective decision-making in a connected
battlespace.
While increased data rates are beneficial, they need a robust architecture to deliver operational advantages. Understanding these nuances is vital for designers and engineers using 100 Gbps technology in embedded systems to achieve meaningful advancements in defense and aerospace applications.
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