Thanks for the suggestion. Fortunately Resolve 15 beta 2 did the job. I have a mid 2012 MacPro 12 Core 2.66GHz with a GTX-680 in the tower and 2 TitanX GPUs in a Cyclone Microsysystems Expansion Chassis.
At the recent BlackMagic Editor's Lounge event it came up that if you check the box in Resolve to allow the GUI GPU to aid in computations when there are multiple GPUs it might slow down a faster expansion GPU to the pace of the slower GPU. The example sighted was a system with and expansion chassis on a MacPro Cheese Grater with with 2 GTX-680 cards. When the 2nd GTX-680 was replaced with a 1080, or whatever that model is not a TitanX but something 1080 there was no noticeable increase in render speed. The BlackMagic Presenter suggested that because the GUI GPU was slower than the new GPU that perhaps it dragged the newer GPU performance down to match it's slow level. The suggestion was to not have the GUI 680 be involved in the computations. I wonder if anyone really knows if this is true.
The reason I mention all this is when I brought these 3K Arri Raw files into Resolve 15 b2 on my home system I turned off the GTX-680 for computation just in case. I was getting about 16 to 18 frames per second processed going from Arri Raw 2880x1620 source to MXF Op Atom DNxHR HQX 10 bit. I can playback at 23.976 from a Mercury Elite Pro USB 3 drive which gets approx 140 Mbps according to blackmagic disk speed test. The playback does stall along the way. As a test I'm going to copy the Camera Neg Arri Raw to my internal 3 strip raid where the BM Speed test for the first partition is 450 Mbps and the the third Partition clocks at 350 Mbps. I believe my 4 partitions on the 3 strip raid start on outside to inside given the 2st is the fastest and they slow down with each of the other 3 partitions. I built the raid taking Hitachi Deskstar 4TB drives and partitioning each with 4 partitions then combining each of the corresponding partitions 1st through 4th in a 3 way stripe. I'll be curious to see how the camera raw plays of the fastest internal.
I'm use to looking at Activity Monitor to see core usage during various processes. Is there a way to monitor the usage of the GPUs? Just want to see if there is a way to quantify how Resolve is utilizing the TitanX GPUs in the expansion chassis.
As far as the Arri Raw Converter I did end up using it on one problem clip that would not show up in Resolve. The file could be seen in the finder but wouldn't be listed in Resolve. After contacting the DIT he said he had the same problem and was able to use Silverstack to process it for making ProRes LT files. The camera had run out of power during the problem clip and didn't get wrapped properly. The Arri Raw Converter however played it and I transcoded to ProRes 4444 and then that worked in Resolve. I guess the Arri Raw Converter is more forgiving with whatever the error was caused by the camera losing power mid take.
I assume that the Arri Mini will only create Arri Raw to a .mxf file format but I don't know this for sure. Oh boy more googling.
---In Avid-L2@yahoogroups.com, <bogdan_grigorescu@...> wrote :
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From: "John Moore bigfish@... [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Yahoogroups <avid-l2@yahoogroups.com>; Yahoogroups <editing-list@yahoogroups.com>
Sent: Friday, May 11, 2018 7:21 PM
Subject: [Avid-L2] Arri Raw into Avid What is going on?
Posted by: bigfish@pacbell.net
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