what resolution DPX? what filesize?
B.
On Friday, May 10, 2019, 6:22:51 p.m. PDT, John Moore bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
MacPro mid 2012 12 Core 2.66 GHz. 64GB Ram Mac OS 10.12.6 in tower GTX-680 2GB Vram using Nvidia Web driver. Cyclone Microsystems Expansion chassis with 2 Titan X GPUs. DPX 10 bit RGB exported from Avid at legal level is on my 4 drive internal software raid in the Mac Pro tower. Black Magic Speed Test show approx 530 MB/sec read.
I haven't hammered much on Resolve and have mostly used it in Swiss Army Knife mode. In Resolve preferences I have set it to not use the GTX-680 for processing. I do this because IIRC Bogdan pointed out that Resolve will limit the GPU Vram to whatever the smalled card is. I'm assuming by telling Resolve not to process with the GTX-680 it is giving Resolve access to the full ram on the two TitanX cards.
I have a very simple sequence with the DPX and 8 channels of wav audio in to embedded wav files. The GUI interface shows green dot 23.976 and the audio plays fine but the video stutters in both the GUI monitor and on my Sony PVM-2541 OLED. It is being fed with an Avid branded DNxIO using spigot 3. I have left the timeline settings at 4096_2160. There is no color correction.
I know DPX is big and kludgy but I would think I should be able to get stable playback with two Titan X GPUs chugging along. With over 500 MB/sec read speed off the 4 drive internal raid made up of Deskstar 4TB drives I wouldn't think drive speed is the issue. I'm pretty novice in Resolve so any advice on where to run things in some lower resolution setting would be helpful. I tried quarter proxy mode but still stutters.
I know Avid won't play it but I thought Resolve with my Expansion chassis would. I really think I have some settings wrong. Is there any way other than the preference settings I mention to tell if Resolve is really pushing the GPUs. Kinda like an Activity monitor for GPU usage.
John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net
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Posted by: Bogdan Grigorescu <bogdan_grigorescu@yahoo.com>
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