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Bensam123
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AMD Input Delay Reduction Technology - Anti-Lag

Fri Jun 14, 2019 12:09 pm

Cool technology, also possibly Scott in the wild?

https://youtu.be/uPpdtXFx7gQ?t=142
 
 
Bensam123
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 8:02 am

I was mainly pointing out the video had Scott Wasson in it explaining the technology.

30% for first gen, initial implementation and focus is a pretty meaty deal. Anti-lag is quite possibly the worst branding they could've used for it, it tells you absolutely nothing about what it's doing, which is reducing input delay.
 
Krogoth
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 8:22 am

Yeah, it is much more accurate to call it GPU/CPU output sync or such but that would have too much branding overlap with Freesync. The *sync branding is a bit crowded too with loads of other unrelated stuff.

I can see this being pick-up in the eSports arena and Nvidia copying it in with their next generation of GPUs.

Damage is still working hard on finding ways to improve the end-user experience outside of brute force hardware prowess. The folks at Nvidia, please take a hint.
Last edited by Krogoth on Sat Jun 15, 2019 8:25 am, edited 1 time in total.
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jihadjoe
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 8:23 am

I wonder how it works. Going from ~50ms to ~33ms sounds an awful lot like the difference between double and triple buffering, which might be getting dynamically toggled by the driver depending on GPU load.
 
techguy
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 9:09 am

Bensam123 wrote:
I was mainly pointing out the video had Scott Wasson in it explaining the technology.

30% for first gen, initial implementation and focus is a pretty meaty deal. Anti-lag is quite possibly the worst branding they could've used for it, it tells you absolutely nothing about what it's doing, which is reducing input delay.


Input delay == latency == lag

What's the problem here?
 
synthtel2
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 11:43 am

The buffer of work between CPU and GPU already has a fair bit of management done on it (more from AMD than Nvidia IME), and this sounds like it's optionally biasing that management more for latency where the usual setup prioritizes consistent frame delivery. AFAICT (without much investigation) the current AMD algorithm looks at CPU frametime variance and tries to keep only enough buffer so that none of it gets to the screen, but I'd much rather it degraded by getting stuttery than increasing latency, so this is great.

Nvidia is probably talking about their option to reduce the maximum size of that buffer, which AMD removed from their interface a while back (it takes regedit now, search flip queue). What it looks like RAL is doing is a much better solution than reducing the buffer's space, if you like low latency as much as I do; capping the buffer at zero doesn't work and would have serious side-effects if it did, but latency-focused management of the buffer can potentially get it to near-ideal behavior. Right now that requires monkeying around with framerate caps.
 
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 3:46 pm

mojojo wrote:
this will be useless lol i suppose

Hmm. Your ideas are intriguing to me and I wish to subscribe to your newsletter. :roll:
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Mr Bill
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Sat Jun 15, 2019 6:00 pm

First person shooters will rejoice when that snapped off shot actually happens when you clicked for it. Maybe they will work on focus stealing delay next (e.g. those apps that start a process and refuse to service the stop/cancel button till you have clicked it several times).
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LostCat
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Re: AMD Input Delay Reduction Technology - Anti-Lag

Mon Jun 24, 2019 8:23 am

Mr Bill wrote:
First person shooters will rejoice when that snapped off shot actually happens when you clicked for it. Maybe they will work on focus stealing delay next (e.g. those apps that start a process and refuse to service the stop/cancel button till you have clicked it several times).

That sounds more like a system/drive overload than anything to do with the GPU.
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