sTRX4 motherboards with 1TB memory capacity

Paul Rallyfan

Paul Rallyfan

Paul Rallyfan

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Joined
29 Jan 2020
Posts
31
Hi All,

Does anyone know if there are any sTRX4 motherboards with 1TB memory capacity currently available..?

I’m putting together an RF simulation machine and need a TB of RAM and would like to base it on a Threadripper 3960X/3970X.

Thanks in advance,

Paul
 
It’s a balancing act - RF simulation software costs a packet, so getting the best compute power per core licensed is important.
However on many of the tasks (meshing finite element etc), are run on a single core before running parallel across many cores, at that point absolute clock speed is hugely important, as is memory bandwidth.

The Ryzen 3960X sits in that sweet point of clock speed, single core performance, and multicore performance - at least in the RF sim world.
 
Thanks for the replies folks..!
That looks like a good starter system for home - I’m setting up a small business.

My system at work is now 4yrs old, and I want to get something similar for my venture.

2x Xeon E5-2698v3 16 core
Titan-X 12GB
512GB SSD
2TB SSD
1024GB (16x64GB) 2133MHz DDR4 EEC
 
Thanks for the input all.

I’ve been researching exactly such a setup - the sweet spot is looking like 4 off 3970X systems with 256GB each.

Software is Altair FEKO and Ansys HFSS, so licences are by the core, and they both scale across multiple computers for the main part of the solve(s). Electrically large computations do require the TB of ram, but this way I’ll be able to also scale my investment vs income, and be able to maximise performance.
 
The computers are hooked up via the highest speed IP network you can, and machines all run IBM Platform MPI or such. Jobs are controlled by a head node and dishes out to the machines.

Software is Altair FEKO and Ansys HFSS RF simulation packages.
 
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Typically 8GB per core is about right - I’m running some very large problems (in respect to number of wavelengths across, and complex material problems), this need more RAM per core - my dual 16 core Xeon at the office carries 1TB because of this.

That’s HFSS - FEKO has a different set of solvers.

https://www.simutechgroup.com/support/ansys-resources/ansys-hardware-support

https://www.simutechgroup.com/blog/maximizing-memory-performance-for-ansys-simulations

https://www.simutechgroup.com/image...ry-performance-for-ansys-simulations-2018.pdf
 
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For example, FEKO uses NVM SSD based flash extensions quite well.

And rather than have a bottle neck in workflows, I will often need to run a large simulation over several days, and still require/have enough system resource to run smaller projects at the same time.
 
I finally pulled the trigger on the following system.

Motherboard: ROG ZENITH II EXTREME ALPHA
CPU: AMD Threadripper 3970X
RAM: CORSAIR Vengeance LPX 256GB (8x32GB) CAS 16-20-20-38
2x Gigabyte AORUS NVMe Gen4 1 TB M.2-2280 NVME
Graphics Card: Gigabyte GeForce RTX 2080 Ti GAMING OC 11GB

Running Cinebench R20 and it reported 17,169
 
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