[Tensian]

Dear all,

As many people in this forum, I have doubts about a good set-up for a new workstation.

I have a budget of around 5000 euros. I work mainly with OpenFOAM and openLB /Palabos, so mostly of my projects are related to CFD (maybe eventually a structural project using ANSYS MEchanical).

I work with aerodynamics, multiphase flow, tubulent flows, heat transfer and fluid-structure interaction. More complex physics are not expected yet (like combustion for example).

I will have to deal with steady and unsteady computations, with meshes around 10-15 million elements.

So I am wondering which set up would be a good trade-off between cost and performance (I wouldn't like to wait for weeks for an unsteady computation). That's why I am here asking for help.

I have some set-ups here that maybe with a bit of help can be refined to get the best price/performance relationship.

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1.
Case: Black Phanteks Enthoo Pro Tempered Glass Side Panel Full Tower Computer Case
Fans: Noctua Redux - Low Noise High-Performance Fans - Rear, Front & Top
CPU: 2x AMD EPYC Rome 7302 3.0GHz (3.3GHz Turbo) 155W 128MB Cache (32 Cores / 64 Threads)
CPU Cooling: 2x Noctua NH-U12S TR4-SP3 Premium-grade 120mm CPU cooler
Motherboard: Supermicro H11DSI-B - Dual AMD EPYC Processors Motherboard
Memory: 64GB (16 x 4GB) DDR4 SDRAM 2.66GHz ECC Memory
Power: 850W - 80 PLUS GOLD Certified Full Modular Power Supply
Video Card: NVIDIA Quadro RTX 4000 8GB GDDR6 Workstation Video Card
Sound Card: Creative Sound Blaster AUDIGY FX 5.1 PCIe 24-bit 192KHz Sound Card
STORAGE
M.2 NVMe Drive: 250GB M.2 NVMe PCIe 3.0 x4 Solid State Drive - read/write 2100/1300 MBps
SSD: SAMSUNG 860 EVO 2.5" 1TB SATA III TLC Solid State Drive (SSD)
CD/DVD: LG 16x BlueRay DVD CD Blu-ray Burner,3D Play Back

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2.
AMD EPYC ROME 7282 2.80GHz (3.2GHz Boost) 16 Core Processor
ISV certified AMD Radeon Pro WX 9100 Graphics
8 Channel 64GB ECC DDR4 2666MHz Memory
1TB NVMe M.2 SSD + 4TB HDD
Support for up to 6 displays (10-bit)
Built with noise dampening components
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3.
AMD EPYC ROME 7452 2.35GHz 32 Core Processor
NVIDIA Quadro P620 Graphics
128GB ECC DDR4 2666MHz Memory
O/S drive: 1TB Encrypted M.2 NVME SSD
4x 4TB Enterprise-class HDD
Tableau Universal Forensic Bridge
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4.

AMD EPYC 7351
16 cores per socket/32 sockets per node
256 Dual rank DDR4-2666
Storage OS: 256 GB NVMe
Storage data: 1 TB NVMe
Mellanox ConnectX-5 EDR 100 GBInfiniband, 16 PCIe
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5.

1 CPU - Intel Xeon E5-16XX, 8 cores, 64 GB ram, GPU, 2x HDD
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6.
2 CPU - Intel Xeon E5-26XX, 24 CPU, 128 GB ram, GPU, 2x HDD
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7.
DELL T7820 2-CPU (6 memory slots/CPU):
DUAL INTEL XEON SILVER (2.1GHz, 3.0GHz Turbo, 8 Cores, 11MB Cache)
NVIDIA video card P4000 (8GB, 4DP)
2 2TB-SSDs
RAM size: either 96GB
P4000 Graphic card (8GB GDDR-VRAM)
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8.
Logic Case SC-416A 4U Rackmount Chassis

Supermicro H11DSI-O, 2x 1GbE NICs

2x AMD EPYC™ 7282, S SP3, 7nm, Infinity / Zen 2, 16 Core, 32 Thread, 2.8GHz, 3.2GHz Turbo, 64MB, 120W, CPU, OEM

2x Noctua NH-U9 TR4-SP3 Compact Single Tower CPU Cooler, 6 Heatpipes, 2x92mm PWM Fans, for AMD Ryzen Threadripper/Epyc ONLY


128GB (16x 8GB) ECC Reg DDR4 2933MHz


2GB NVIDIA Quadro P620, 512 Cores, Supports 4 Displays


1000W Corsair RMx, Modular, Silent, 80PLUS Gold

1TB Samsung 970 EVO PLUS NVMe PCIe 3.0, 3500MB/s Read, 3300MB/s Write, 600K IOPS

4TB Seagate ST4000DM004 BarraCuda, 3.5" HDD, SATA III - 6Gb/s, 5400rpm, 256MB Cache, OEM NCQ

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8.

Base Components WS-E1320A-G4 - Base
Processor 1x AMD EPYC 7452 - 2.35GHz Base, 3.35GHz Turbo, 128MB Cache, 155W TDP, 32 Cores/64 Threads per CPU
Memory 128GB (8x16GB) 2666MHz Quad Channel ECC Registered DDR4 Memory
Graphics 1 AMD Radeon Pro WX 4100 - 4GB Workstation Graphics Card (1024 Stream Processors)
Primary Hard Drive*1TB Samsung 970 EVO Plus M.2 PCIe 3.0 x4 NVMe SSD - 3,500MBps Read, 3,300MBps Write, 600K/550K IOPs
Hard Drive 24TB 3.5" Desktop Hard Drive - 7,200rpm, 128MB Cache, SATA3
Hard Drive 3 Optical1 x DVD/RW +/- Optical Drive - Black (5.25" SATA)
Power Supply 1500W ATX 80-Plus Gold Certified Power Supply
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These are some configurations I found on the web and also in the forum, but still not sure which one I should buy. DO ou guys know any shop in Europe that can provide a good set-up for CFD if I told them the requirements of my projects (of course a shop you trust...).

Which one you recommend? What would you modify and why? Do I have budget enough for my requierements?

Any help will be really appreciated.

Best,

T