October 26, 20187 yr 3 hours ago, Rob Ainscough said: Unfortunately no, I'm running different GPUs now (2080Tis in NVLink/SLI) so I'll not have Apples to Apples compare … I can test with the 2080Tis if you like … relative compare with Vulkan On/Off? Cheers, Rob. Yes, that would be great. Same graphic settings and location with Vulkan ON and OFF is what I'd like to see. Is it possible or convenient for you to perform a single 2080ti test? If not, then SLI would be fine. Thanks in advance!
October 27, 20187 yr On 10/25/2018 at 5:46 PM, Arasaka said: Yes, that would be great. Same graphic settings and location with Vulkan ON and OFF is what I'd like to see. Here ya go, single and multi-GPU with Vulkan vs. OpenGL ... some strange results in with single GPU and Vulkan? (not sure what that's about?) OpenGL was faster on the FPS front BUT it didn't support the higher quality AA that Vulkan offers ... so keep that in mind when viewing (recorded at 60 FPS 4K resolution): Cheers, Rob.
October 27, 20187 yr What i noticed is the GPU / CPU load difference between Opengl and vulkan at least on the single GPU test. Vulkan seems to be using more CPU power and RAM ? Ryzen 5 1600x - 16GB DDR4 - RTX 3050 8GB - MSI Gaming Plus
October 27, 20187 yr Thanks a lot Rob, Very strange results to be honest. Perhaps the presence of SLI or other setting / options were interfering? Vulkan seems to be using less CPU, but at the same time generating 3 times less FPS (at least in the single GPU test)? I would expect the opposite. Not really sure why. On a side note: Aerofly does look beautiful and absolutely butter-smooth. I sincerely hope that low fps / stutters will soon be things of the past in flight sims. Isn't it exiting time to be a simmer 🙂 ? Regards Edited October 27, 20187 yr by Arasaka
October 27, 20187 yr 2 hours ago, Arasaka said: Very strange results to be honest. Agree, very strange indeed, so strange I ran the Single GPU Vulkan test twice (after a reboot each time) as I didn't understand why GPU loads were distributed across both GPUs when I had NVLink/SLI disabled via NCP. But, Vulkan API can address multiple GPUs if found regardless of the NCP SLI setting ... but why was FPS still lower? My guess is 2080Ti drivers might still need some work for Vulkan. But as far as Vulkan having lower FPS than OpenGL, I expected that result as Vulkan offers better AA support (better visuals). Cheers, Rob.
October 28, 20187 yr My results are that Vulcan is now much faster than opengl in 2D. On the other hand opengl is still much faster in VR. We are all connected..... To each other, biologically...... To the Earth, chemically...... To the rest of the Universe atomically. Devons rig Intel Core i5 13600K @ 5.1GHz / G.SKILL Trident Z5 RGB Series Ram 64GB / GIGABYTE GeForce RTX 4070 Ti GAMING OC 12G Graphics Card / Sound Blaster Z / Meta Quest 2 VR Headset / Klipsch® Promedia 2.1 Computer Speakers / ASUS ROG SWIFT PG279Q ‑ 27" IPS LED Monitor ‑ QHD / 1x Samsung SSD 850 EVO 500GB / 2x Samsung SSD 860 EVO 1TB / 1x Samsung - 970 EVO Plus 2TB NVMe / 1x Samsung 980 NVMe 1TB / 2 other regular hd's with up to 10 terabyte capacity / Windows 11 Pro 64-bit / Gigabyte Z790 Aorus Elite AX Motherboard LGA 1700 DDR5
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