Maya HTT has partnered with AMD to test performance of the AMD Ryzen™ Threadripper™ PRO 5000WX and 7000WX-series processors as a powerful analysis workstation option for Siemens Simcenter STAR-CCM+ workflows.
Maya HTT is an industry-leading software developer and engineering services provider. Its products and services include multiphysics simulation, computer-aided engineering (CAE), computer-aided design (CAD), and computer-aided manufacturing (CAM), including plastic injection molding. It also offers Product Lifecycle Management (PLM), Artificial Intelligence (AI), and Industrial Internet of Things (IIoT) platform solutions. Collectively, these solutions help Maya HTT clients harness the potential of digitization and to capture the business value of their data to improve operational efficiency. As a technological partner, software editor, and provider of multiple Siemens solutions, Maya HTT’s extensive experience in design, analysis, systems integration, manufacturing, asset operations, digital twin and software deployment helps clients and partners optimize products and find cutting-edge, best-fit solutions for modern problems.
Siemens Simcenter STAR-CCM+ is an industry-leading analysis software providing comprehensive multiphysics computational fluid dynamics (CFD) simulation and a single CAD solution in a single integrated environment.
The purpose of this whitepaper is twofold:
- To illustrate the performance improvements realized by utilizing the current generation of AMD Ryzen™ Threadripper™ PRO processors running the Windows 11 operating system
- To illustrate how the Siemens Simcenter STAR-CCM+ software scales when executed on the AMD Ryzen™ Threadripper™ PRO processor
Siemens provides a set of standard benchmarks for Simcenter STAR-CCM+. The models tested here represent typical use cases covering a range of sizes. Testing was performed for each processor using a range of Simcenter STAR-CCM+ processes. The BIOS settings for each computer were adjusted following recommended practices for optimal performance, which include disabling Simultaneous Multithreading and setting the NUMA Per Socket to 4.
Hardware description
| Processor | 5975WX | 5995WX | 7975WX | 7995WX |
| Architecture | Zen 3 | Zen 3 | Zen 4 | Zen 4 |
| Available Cores | 32 | 64 | 32 | 96 |
| Base clock speed | 3.6 GHz | 2.7 GHz | 4.0 GHz | 2.5 GHz |
| Boost clock speed | 4.5 GHz | 4.5 GHz | 5.3 GHz | 5.1 GHz |
| Memory Channels | 8 | 8 | 8 | 8 |
| Installed RAM | 256GB (8X32GB DDR4-3200) | 512GB (8X64GB DDR5-5600) | ||
| RAM Speed | 3200 MT/s | 5600 MT/s | ||
| Windows Version | Windows 11 | |||
| Hardware | Lenovo P620 | DELL Precision 7865 | HP Z6 G5 A | |
| Software Version | Siemens Simcenter STAR-CCM+ v2402 Double Precision | |||
Test methodology
Three of the standard benchmark models were selected: Civil aircraft external aerodynamics and two different meshes of the LeMans automotive external aerodynamics.
Siemens Simcenter STAR-CCM+ provides functionality to run hardware benchmarks, performing a sweep across a user-specified number of processors. To compare performance between the different hardware configurations, the benchmark simulations were run with 16 and 32 Simcenter STAR-CCM+ processes on all hardware configurations. The 64-core AMD Ryzen™ Threadripper™ PRO 5995WX processor was run with 16, 32, 48, and 64 processes, and the 96-core 7995WX added a run with 96 processes. Initial testing on 5995WX 64-core and 7995WX 96-core processors demonstrated that the systems lacked sufficient memory bandwidth to occupy the full capacity of all cores, so testing was extended to include 5975WX and 7975WX 32-core processors. For these 32-core processors, the benchmarking sweep ranged from 8 to 32 processes.
Performance results
The resulting data is presented in two charts below. The data is all normalized to the performance of the AMD Ryzen™ Threadripper™ PRO 5975WX processor.
The first chart shows the relative speed-up on each hardware configuration of a 32-core simulation. As indicated, the 7975WX performance is 38% to 51% faster for these models. The 7995WX performance on 32 processes is 25% to 32% faster. The 5995WX using 32 processes shows a minimal performance advantage between 0%-6% speedup.
The second chart shows the best attained performance point of each processor normalized to the AMD Ryzen™ Threadripper™ PRO 5975WX performance. In this case, the 5995WX can provide between 10% to 14% speedup advantage, with the fastest performance occurring when using 48 processes to solve. The 32-core 7975WX shows an advantage of between 38% and 51% occurring at 32 processes. The 96-core 7995WX sees an impressive 63% to 72% speedup at peak performance over the 32-core 5975WX, with the best attainable performance seen while utilizing between 48 and 64 processes, depending on the model.
In conclusion, it is clear that the AMD Ryzen™ Threadripper™ PRO 7000WX-series processors show a marked improvement over the previous generation. When looking for a powerful CFD analysis workstation, the 7975WX provides excellent value for simulation models which perform well up to 32 processes. If there is room in the budget, the 7995WX provides additional performance gains for an even faster result turnaround.
To learn more about AMD’s Ryzen™ Threadripper™ PRO capabilities and features visit AMD Ryzen™ Threadripper™ Processors