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Messages - agentdark45

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16
Hardware / Re: Threadripper Builds
« on: 2020-02-26, 14:06:00 »

Okay, I tried running DRAM Calculator 1.7.0 with my spec but it says "Error: Not Supported!"
I've attached the info. Any suggestions?

Thanks

You've set it to Samsung D-die - it needs to be set to Hynix DJR (your Ram manufacturer is Hynix and D-die is DJR).

17
Hardware / Re: Threadripper Builds
« on: 2020-02-25, 12:33:02 »
Thanks! Yeah Gear Down mode rounds up and enables stable Command Rate 1T. Kinda murky what all it affects but since it improves stability, I would definitely keep it on.

The newest Trident (the current newest, because "newer newest" will come somewhere in March/April/May together with the Crucial kit I ordered, which I believe will be the same binning of "newest" (lol) M-E dies.
G.Skill already posted a screenshot of validated 256GB 3600 CL16 running on TRX40 Asus ZE-II Alpha, so I am really hopeful that will apply to Aorus as well. But G.Skill did the same last year with 256GB 3200 CL14 and such kit never arrived.
So imho it was stable enough for Twitter bragging only ;- ).

Did you adjust all Voltages as Rec as well?

Noice, definitely keep us posted when you get the kits. Yeah I'm using the recommended voltages with no issues so far.

18
Hardware / Re: Threadripper Builds
« on: 2020-02-24, 16:29:17 »
The calculator worked that well for you even with 128 GB ? Very nice to hear!

So what exact kit is this? And how were the XMP and adjusted settings differing?

Here's my kit: https://www.gskill.com/product/165/166/1536567022/F4-3600C17Q2-128GTZRTrident-Z-RGBDDR4-3600MHz-CL17-19-19-39-1.35V128GB-(8x16GB) - I picked it as I got it at a real good price on amazon (compared to 2x64gb of the newer Trident Z Neo, which afaik is Micron Rev E).

Stock XMP settings are CL17-19-19-39 with some pretty wacky subtimings. I've attached the timings that I'm running with Ryzen DRAM calculator, however I've bumped my tRFC to 540 as 480 was a bit too low to be fully stable. Would be interesting to see if anyone manages to get 256gb working at 3600mhz using this!

Don't quote me on this but someone mentioned that all odd timings get rounded to the higher even number so CL17 would get rounded to CL18 with geardown mode enabled.

19
Hardware / Re: Threadripper Builds
« on: 2020-02-24, 16:04:56 »

Threadripper 3990x
G Skill Trident 128gb DDR4 3600mhz C16
Gigabyte Aorus Master TRX40


Hey Ryan,

Does it run fully stable at 3600/CL16 ? This is 8x16GB right ?


Yes Juraj, it seems to be stable so far. 8x16gb running full speed now I turned on XMP Profile in BIOS. I’ll be rendering on it a few hours tomorrow and will post if I find any issues!

I would try running something like memtest for a few hours to double check stability. Actually trying running a demanding game as I've had games crash a system due to unstable memory timings even after running memtest for 5+ hours with zero errors (others have found the same on various OC'ing forums). Interestingly rendering doesn't seem to tax memory as hard as gaming, so you could techically be running an unstable memory OC and not even know it (until a problem rares it's head right when you don't want it to on a critical overnight render).

I would suggest using Ryzen Dram calculator + Typhoon burner to hone in on rock solid settings. For me the 3600mhz CL17 XMP settings appeared stable at first (128gb kit), but then I would get random app crashes, and confirmed with memory errors after 5 minutes of memtest. After manually inputting the tweaked Ryzen DRAM settings for Hynix DJR into the bios I have better than XMP timings and am fully stable in memtest, games and rendering.

20
So it seems that the black screen + need to unplug the PC from power issue is most probably caused by using a combination of 2990wx (and possibly other CPUs) with hardware which was not really designed for handling such CPUs (such as motherboards or PSUs).
This seems to be confirmed by what Juraj wrote here:
https://corona-renderer.com/forum/index.php?topic=22869.msg153046#msg153046
And also on various hardware forums online.

I can confirm this also. I had to send back my 2990wx system a year ago as no motherboard apart from the MSI MEG Creation had a decent enough VRM to handle the CPU's power draw. In my case the Asus Strix VRM's hit 115c within 10 minutes of rendering (at stock settings) and would throttle the CPU down to 1ghz (this was after "reassurance" that the VRM's would be capable, despite me arguing otherwise before the system was built). I assume the same thing is responsible for the black screens on other systems, or over-current protection kicking in when the VRM's get out of whack.

21
Hardware / Re: Threadripper Builds
« on: 2020-02-13, 13:35:03 »
Some solid delay right, huh ;- )? Also waiting for it, I kind of don't want to waste time using my existing EKWB that I will dissasemble.
Last ETA give to me was "Two weeks to shipping" on Feb 3rd. Oh well...busy month anyway.

Anyway, nice parts ! We're gonna have very similar builds :- ). Also went for i1600 but there is no other PSU like that (the SuperFlower is non-digital platform, BeQuiet will release in March+,...)

Man, that delay is killing me!

Re the RAM, where did you get the Micron e-die 3600&CL16 32GB DIMMs from? Some seriously impressive specs! Running 256gb at that speed and timings would make me nervous though, let's hope the motherboard holds up.

22
Feature requests / Re: The most wanted feature?
« on: 2020-02-13, 13:27:58 »
How does it handle microdetail? Do you know?
So for things like this:
<Snip>

Like this

Damn, this is nice. Is this parallax vs the regular bump mapping? How fine can you go before it breaks?

23
Hardware / Re: Threadripper Builds
« on: 2020-02-09, 14:26:22 »

Ram seems to be an issue I am going for 128gig I can get two CMT64GX4M4C3200C16 dominator kits but I really don't want the rgb and large heat shields. I found some F4-3200C16Q-128GVK gskill kits that I can buy. both kits are on the QVL list.
Does anyone have any experience with either of these kits ?

I generally ignore QVL lists for RAM. Memory IC's are made by a handful of big companies (Samsung, Micron, Hynix e.t.c).

I purchased: https://www.amazon.co.uk/Gskill-F4-3600-%C2%B0C17Q2-128GTZR-DDR4-128-GB-Memory-Grey/dp/B073VPCHSQ due to the great timings and binning by Gskill. According to Typhoon burner my ram is Hynix DJR, 1 step off the commonly accepted best Samsung b-die, however DJR can run with more stability at higher temperatures than B-die.

I can run all 128gb at 3600mhz @ 16, 16, 19, 20, 32 (@ 1:1 infinity fabric ratio) completely stable after using Ryzen DRAM calculator by 1usmus.

I'd also get a more beefy power supply if you're getting the 3990x - according to the reviews some people were sucking down 950w+ when overclocking. I went for the Ax1600i due to the excellent reviews and silent operation.

My motherboard is a Gigabyte TRX40 Designare (comes with a free thunderbolt and NVME expander card), same VRM design as the Aorus extreme but a couple of hundred bucks less.

I made a 3D mockup of my watercooling loop (measured the case and mounting holes with calipers meticulously, and all fittings and radiators are to scale). Last bits to come in are the reservior and CPU block from Optimus, currently just running a Dark Rock Pro TR4 air cooler until I assemble the loop.

24
Feature requests / Re: Animation & Scene Parsing
« on: 2020-02-07, 17:22:16 »
This! At least there should be a checkbox to keep the scene loaded into RAM for those who have enough physical RAM to not have to parse the scene on each frame.

25
Hardware / Re: Threadripper Builds
« on: 2020-02-07, 16:14:37 »
Some reviewers have been hitting 18s in Corona bench, insane!

I'm still happy with my 3970x though, managed to get a nice £150 discount on Amazon prime business. I'll probably end up getting a 64 core (or more?) when windows sorts out it's issues with +32 core systems, and by then the expected IPC gains from AMD will be next level.

26
Gallery / Re: Layers of White
« on: 2020-01-29, 15:31:35 »
Wow these are fantastic! Would you mind letting me know where I can get such good quality backplates from?

27
Gallery / Re: kitchen
« on: 2020-01-26, 12:57:42 »
Looks great man. Could you post up the lightroom/LUT creator versions so we can see the difference?

I would definitely be interested in seeing your workflow for creating the LUT.

28
Hardware / Re: Threadripper Builds
« on: 2020-01-07, 11:50:25 »
I'm now second guessing whether to get the 64 core due to the anomalies listed above (windows processor groups, low R20 score, no mention of the TRX80 boards).

I guess the low R20 score could be attributed to two things:

1. Low all core boost to keep the stock TDP at 280w - I assume this can be resolved with a touch of overclocking?
2. The benchmark finishing too quickly to give an accurate/scalable result.

Seeing as my main use case will be for Corona, I'm going to wait until I see a nice linear Corona bench score pop up else I think I'll go with the 3970x and upgrade again in 2 years+ when the quirks of a mainstream 64 core CPU have been ironed out - by then we'll also have DDR5...so much to think about.

Also Juraj, I spoke to Optimus and they are aiming to ship out the Threadripper blocks next week.

29
Bug Reporting / Re: AMD vs INTEL Far Bump Calculation
« on: 2019-12-13, 19:08:19 »
Is the F-Storm interpolated that sharply specifically in bump or in general? Yeah if Bump/Normal would drive roughness at resolution-independent way, that would be...kick ass.

I think it's an engine wide approach to texture/AA filtering as bitmaps in general render with more clarity at distance, Dubcat touched on this in his thread. Whatever it is, it's goddamn magical - the smudge/dust maps on the metal pot and cooker surface are so well sampled and devoid of any "cgi" sharpness, whilst also retaining amazing detail.

30
Bug Reporting / Re: AMD vs INTEL Far Bump Calculation
« on: 2019-12-13, 17:59:10 »
As an aside to this, while the devs are looking at bump mapping - would it also be possible to look into how micro bump details are handled?

Myself and others on the forum have mentioned that when it comes to micro details (dense micro metal scratches/bumps for example), the result is often view and resolution dependent which can wreak havoc when going from a low res test render to a high res production render.

A quick example of this would be to add a stretched noise bump map to simulate anistropy/realistic reflection dulling on a metal pot. I can do this easily in Fstorm with just bump mapping (sorry to beat the Fstorm drum again), but I can't with Corona. Please see the video below for an example of this in action:


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