fbpx

Ansys Hardware Information

Ansys Training
Ansys General Platform Support Recommendations
Mechanical Performance Considerations:

CPU (Processor):

  • Solver is aided by AVX512 support, thus Intel CPUs based on Skylake-SP and Skylake-X or newer are recommended. Check Intel ARK Database for AVX512 Support (but not Xeon Phi series).
  • Examples of recommended CPUs for HPC applications: i9-9920X or Xeon Gold 6136 (12 cores), Xeon Gold 6140 (18 cores * 2 = 36 cores)
  • High core frequency is ideal, but actual frequency is dependent or core use, instruction set use, and adequate cooling. WikiChip is an excellent resource on turbo speeds.

Memory (RAM):

  • Memory capacity is very important. The model solution should be solving in RAM (“in-core”) and not paging to the hard drive (“out-of-core”). About 15 GB per million degrees of freedom is required, but this is approximate (45 GB per million solid nodes in structural analysis).
  • Fastest memory (i.e. 2666 MHz for servers or 3200+ for i9 based desktops).
  • To operate at maximum speed, all memory channels in both processors should be populated with equal amounts of memory.
  • Note: Purchasing more RAM will alleviate I/O issues, as (1) the solver can use this memory to avoid doing as much I/O, and (2) the operating system can then use available RAM to cache or buffer these I/O that MAPDL writes.

Hard Drives:

  • An SSD is highly recommended for all simulation work. NVMe SSDs are recommended when possible. Intermediate endurance levels are recommended (~0.3 DWPD), not QLC NAND.
  • Note: For DMP, the program writes results files for every core in use, so having SSDs with a lower seek time will reduce waiting for the hard drive seeks to read/write to all those different files. It also assists with post-processing.
  • Running large models out of RAM (“out-of-core”) will accelerate SSD wear (consume its write endurance) but is still preferable to not using an SSD.

Graphics:

The following cards are supported as of Ansys v19.2 (Please refer to Ansys Help and Ansys Platform Support for supported Graphic Card models):

  • A mid-range graphics card (such as Nvidia Quadro P2000 and AMD Radeon Pro WX5100) can be used. These will not assist with solution time and only display graphics.
  • Ansys maintains a list of tested graphics cards (other cards may/may not work as expected, but typically do work if of the same generation).
  • Note: It is important to keep graphics drivers updated from the card’s vendor.

GPU (for solution acceleration processing):

The following cards are supported as of Ansys v19.2 (Please refer to Ansys GPU Accelerator Capabilities):

Interconnect:

  • If clustering, a very high-speed interconnect is mandatory (40 Gb/s plus).
  • QDR or FDR IB interconnect (or better) if you will be running on two or more nodes in parallel.

Ansys Mechanical – Example Recommendations:

  • Workstation with NO HPC licenses: i7-9800X (8 cores) with 64/128GB DDR4-3200
  • Workstation with 1 HPC Pack: i7-9920X (12 cores) with 128GB DDR4-3200
  • Workstation with 2 HPC Packs: Dual Xeon Gold 6140 (36 cores total) with 192/384 GB DDR4-2666

(Individual hardware needs are dependent on various factors that increase or decrease requirements.)

Computational Fluid Dynamics (CFD) Performance Considerations:

CPU (Processor):

  • Core scaling in CFD software is very good, therefore focus on Cores * Frequency = Effective Frequency, with slight bias towards frequency.
  • Both AMD and Intel CPUs are recommended, as long as the latest generation (AMD Zen cores).

Memory (RAM):

  • Recommended RAM quantity is simulation dependent, but general recommendation is 4-8 GB per core, with more for small core count systems.
  • Memory bandwidth is very important, therefore get high frequency RAM (i.e. 2666 MHz or faster for non-servers).
  • To operate at maximum speed, all memory channels in both processors should be populated with equal amounts of memory.

Hard Drives:

  • SSD not as critical but is beneficial to the user experience. High endurance SSD is not strictly necessary.
  • CFD does not do a lot of Disk I/O, so you can use SATA drives.

Graphics and GPU Acceleration:

See Mechanical recommendations above, no change.

Interconnect:

  • 1 Gb/s interconnect is effective for small to medium clusters, investing in better can have a good return on investment.

Ansys CFD – Example Recommendations

  • Workstation with NO HPC licenses: i7-8700K (6 cores) with 64GB RAM, Ryzen 7 2700X (8 cores) with 64GB RAM
  • Workstation with 1 HPC Pack: i7-9920X (12 cores) with 64/128GB RAM, Threadripper 2950X (16 cores) with 64/128GB RAM
  • Workstation with 2 HPC Packs: Dual Xeon Gold 6140 (36 cores total) with 192/384 GB RAM, Dual EPYC 7351 or 7371 (32 cores total) with 128/256 GB RAM

(Individual hardware needs are dependent on various factors that increase or decrease requirements.)

Electronics (EBU) Performance Considerations:

CPU (Processor):

  • Look for latest generation CPUs with high frequency.
  • Note: HFSS is primarily an in-core solver, so clock speed and RAM speed is important.

Memory (RAM):

  • Recommended RAM is 8 GB per core HFSS, Maxwell, and other Electronic Packages or typically 64 GB – 256 GB.
  • Memory bandwidth is important, therefore get high frequency RAM (i.e. 2666 MHz).
  • To operate at maximum speed, all memory channels in both processors should be populated with equal amounts of memory.

Hard Drives:

  • An SSD is highly recommended for all simulation work. NVMe SSDs are recommended when possible. Intermediate endurance levels are recommended (~0.3 DWPD), not QLC NAND.

Graphics and GPU Acceleration:

See Mechanical recommendations above, no change.

Interconnect:

  • QDR or FDR IB interconnect if you will be running on 2 or more nodes in parallel (on a cluster, minimum 10Gb network)
Additional Ansys Hardware Resources:

Further details regarding Ansys platform support and hardware recommendations can be found in the Ansys Help and at the Ansys Platform Support webpage, which contains specific details regarding:

  • Ansys Platform Support – Summary of Strategy and Plans
  • Browser Support
  • CAD Support
  • 3Dconnexion Devices Certification
  • GPU Accelerator and Co-Processor Capabilities
  • Graphics Cards Tested
  • Interconnects Support
  • Job Schedulers & Queuing Systems Support
  • Platform Support by Application
  • Remote Display Support

SimuTech Group technical support is also available to answer additional hardware questions or provide assistance with any hardware upgrades or purchases.

Menu