WAYNE, PA — Cornelis said its CN5000 interconnect, paired with AMD’s latest EPYC 9755 processors, has delivered a breakthrough performance result on one of the most demanding computational fluid dynamics benchmarks in the industry—more than doubling the previous record for Ansys Fluent, now part of Synopsys.
The new performance score of 1704 on the 140-million-cell f1_racecar_140m benchmark was achieved across an eight-node cluster powered by AMD’s Zen 5–based EPYC 9755 CPUs and Cornelis’ CN5000 Omni-Path networking. The result sustained nearly 99% strong-scaling efficiency across 1,024 CPU cores, a level Cornelis said eliminates the network as a bottleneck and dramatically accelerates engineering workflows.
“This is a great example of the tangible benefits that are possible when the network stops being a bottleneck,” said Cornelis CEO Lisa Spelman. “We’re empowering engineers to explore more ideas, test them faster, and turn bold concepts into real-world breakthroughs.”
The CN5000 portfolio—featuring a 400Gbps PCIe 5.0 SuperNIC and a 48-port, full non-blocking switch—has become a preferred interconnect for AMD EPYC–based clusters in high-performance computing environments where both compute density and communication efficiency are critical.
AMD’s Robert Hormuth, corporate vice president of architecture and strategy, said the result reflects how EPYC processors are engineered for high-throughput, scale-out performance in simulation-heavy workloads.
For industries such as automotive, aerospace, and advanced manufacturing—where simulation speed directly influences safety, development cost, and time-to-market—the performance leap is more than a technical milestone. Faster simulations allow teams to evaluate more design variants per day, model higher-fidelity physics, and compress development cycles without sacrificing quality.
Synopsys’ Wim Slagter said the record demonstrates how engineering teams using Ansys Fluent 2025 R1 can now run twice as many design studies within the same timeframe, improving both product functionality and decision-making.
The previous benchmark score for the same test case—830—was achieved using prior-generation AMD EPYC 7773X processors and HDR 200G interconnects. Cornelis said the new result validates the CN5000’s congestion-free architecture and its ability to deliver near-linear scaling for communication-intensive engineering workloads.
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