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It is exciting to observe the rapid evolution of the cloud high-performance computing market and to think of what it can mean for customer innovation. Just a year ago, Microsoft Azure was the first to run a 10,000 core Simcenter STAR-CCM+ job in the cloud with AMD EPYC processor-based HB-series VMs. This run proved the viability of large-scale cloud HPC while showcasing impressive performance that rivals on-premises HPC clusters. Azure customers shared resoundingly positive feedback about how this newfound scale helped them to accelerate research and be more productive.


                This year, Microsoft upped the ante when they published results of the 2nd Gen AMD EPYC processor-powered Azure HBv2 running a 57,000 core “Le Mans” computational fluid dynamics (CFD) model on Simcenter STAR-CCM+ with 10x the mesh resolution of last year’s test. This was among the largest Simcenter STAR-CCM+ jobs ever validated by Siemens*-- not just in the cloud, but in any datacenter environment. Until recently, only the most powerful computing environments were equipped to run simulations of such scale and accuracy. Now, small and large companies alike possess the computing power to drive world-changing innovation at supercomputer-scale on-demand for as little as $0.6614/hr per virtual machine using spot pricing.

Figure 1: Simcenter STAR-CCM+ Speedup on HBv2 from 1 to 640 virtual machines (57,600 cores)

Note: A given scaling point may achieve optimal performance with 90, 112, 116, or 120 parallel processes per VM. ###Plotted data below shows optimal performance figures. All tests were run with HPC-X MPI ver. 2.50.                                  


Why AMD EPYC Processors for Simcenter STAR-CCM+?

As with a wide variety of enterprise and HPC workloads, 2nd Gen AMD EPYC processors offer leading performance for CFD, with up to 95% faster simulations than competitive alternatives on Simcenter STAR-CCM+[1]. AMD works with major software vendors like Siemens to help ensure your software is optimized for performance with AMD EPYC processors. The broad ecosystem of open tools and libraries are more reasons why Microsoft Azure trusts AMD EPYC processors for its most demanding services.

“There is a constant pressure to accelerate the speed of product design and today, our customers are looking to turn around high-fidelity simulations in hours, not weeks.  We are very impressed with the scalability and performance of Simcenter STAR-CCM+ on the AMD EPYC processor-based Azure Virtual Machines. It will enable our customers to scale-up their simulations quickly, so that they can get the necessary insight to make better engineering decisions faster.”

Keith Foston, Senior Product Manager - Cloud and SaaS at Siemens


AMD Technology Powers HBv2 Leadership

Azure HBv2 extends leadership AMD EPYC performance to the cloud with a fully optimized virtual machine featuring the latest HPC technologies. This makes HBv2 an ideal extension of an on-premises environment and helps provides customers the capability to deliver net new workloads in the cloud on a scale previously unimaginable for some companies.

Specific features include:

  • 2nd Gen AMD EPYC processors with leadership core counts and 45% more memory bandwidth than competing alternatives*
  • Cloud’s only 200Gbps HDR InfiniBand* running PCIe Gen 4.0, providing excellent application scaling efficiency and low latencies
  • Elastic scale ranging from 120-80,000 cores for MPI workloads


Azure HBv2 VM Specs

CPU Cores


Memory per CPU Core


480 GB


Local SSD: GiB

RDMA Network

Azure network


200 Gbps
                     40 Gbps


Learn more about the AMD-powered HBv2 solution for Simcenter STAR-CCM+

Azure and AMD make it easy to set up an AMD EPYC processor based VMs and run the benchmarks you see above. Learn more about manufacturing solutions with HBv2 and 2nd Gen AMD EPYC processors.

Shrinking time-to-results with CFD at extreme scale with STAR-CCM+ on Azure HBv2 VMs

Run STAR-CCM+ In Azure HPC Cluster

Azure HPC Images on GitHub

Azure Infrastructure Designs

AMD EPYC for STAR-CCM+ Solution Brief


[1] Based on AMD internal testing of Siemens PLM STAR-CCM+ 14.02.009, kcs_with_physics benchmark, as of July 17, 2019 using a 2P EPYC 7742 powered reference server versus a 2P Xeon Platinum 8280 powered server. Results may vary. ROM-70


Sean Kerr is Product Marketing Manager, Cloud at AMD. His postings are his own opinions and may not represent AMD’s positions, strategies or opinions. Links to third party sites or use of third-party names/marks are provided for convenience and unless explicitly stated, AMD is not responsible for the contents of such linked sites and no endorsement is implied.


We talked in a previous AMD blog about enterprise IT teams moving to Hyperconverged Infrastructure (HCI), as well as the new Dell EMC VxRail systems with AMD EPYCTM processors. The evolution toward HCI allows enterprises to consolidate multiple pieces of function-specific hardware into more manageable clusters. This is accomplished leveraging advancements in software defined networking capabilities and high-performance virtualization technologies in a more general-purpose server.


Today, Dell Technologies added a new Dell EMC Solutions for Azure Stack HCI platform powered by AMD EPYC to their portfolio. Running Windows Server 2019 Datacenter, the new AX-6515 for Azure Stack HCI provides advantages for leveraging Azure cloud services while delivering virtualized applications in remote office / branch office environments (ROBO). In addition, the AX-6515 is ideal for remote workers who are leveraging Virtual Desktop Infrastructure (VDI) for Microsoft Office. With its browser-based system management, support for full flash drive configurations, compact 1U form factor, and the comprehensive certification of Dell EMC, the AX-6515 with AMD EPYC makes a compelling platform offering for Azure Stack HCI.


A Microsoft Server 2019 pilot program is available with the AX-6515 as well. Customers only license the first 32 cores per socket, a compelling value proposition for 64 core AMD EPYC processor fans!


The new AX-6515 joins the VxRail E665, E665F, and E665N hyperconverged systems take advantage of the powerful performance capabilities, high core counts, and class leading memory bandwidth[i] of 2nd Gen AMD EPYC processors.


If you are looking to move to an HCI environment with your IT infrastructure to manage overhead, provide high-performance services to your business and keep up with the evolution into a digital workspace, AMD EPYC processors are the clear choice for modern HCI.


John Morris is CVP, Enterprise and HPC Business Group, AMD. His postings are his own opinions and may not represent AMD’s positions, strategies or opinions. Links to third party sites or use of third-party names/marks are provided for convenience and unless explicitly stated, AMD is not responsible for the contents of such linked sites and no endorsement is implied.



[i] EPYC 7002 series has 8 memory channels, supporting 3200 MHz DIMMs yielding 204.8 GB/s of bandwidth vs. the same class of Intel Scalable Gen 2 processors with only 6 memory channels and supporting 2933 MHz DIMMs yielding 140.8 GB/s of bandwidth. 204.8 / 140.8 = 1.454545 - 1.0 = .45 or 45% more.  AMD EPYC has 45% more bandwidth. Class based on industry-standard pin-based (LGA) X86 processors. ROM-11