From: "email blanca" Received: from clustermx2.nwk01.hosting.com ([204.12.102.37] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 5546607 for ae-list@media-motion.tv; Tue, 12 Aug 2014 06:00:24 +0200 X-HDC-Scanned: Yes Received: from mail70.safesecureweb.com (mail70.safesecureweb.com [76.12.11.4]) by clustermx2.nwk01.hosting.com (HDCMail-outmx) with ESMTP id 7E38F900DB for ; Tue, 12 Aug 2014 00:00:20 -0400 (EDT) Received: from 173.49.156.132 [173.49.156.132] by mail70.safesecureweb.com with SMTP; Mon, 11 Aug 2014 23:53:40 -0400 Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Apple Message framework v1283) Subject: Re: [AE] rendering speed oberservations In-Reply-To: Date: Mon, 11 Aug 2014 23:59:42 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: "After Effects Mail List" X-Mailer: Apple Mail (2.1283) Greetings=85 I have been test driving a replacement Mac Pro and have observed some = dramatic variations in rendering speed. I understand to expect = variations when dialing in the rendering sweet spot as far as # of = processors and ram dedicated to those processors. I speaking about = dramatic rendering speed variations within a given setup. The test set up is: 2009 4,1 Mac Pro with the 5,1 firmware upgrade 2x X5670 2.93ghz 12 core tray 64GB of ram, 4x from one brand, 3x from another brand and a solo chip = from a 3rd brand. The rig supplier says the ram is identical in specs = but I have no way to confirm, although they all report as 1333mhz ddr3 = chips. I am trying to get 8 matched 8GB chips so I can to test further. nVidia GTX 680 2GB for Mac Crucial M4 512GB internal SSD for AE Cache and project rendering External storage: Sonnet eSATA 3.0gbs via an E4P PCIe card and external = D500P enclosures with WD 3TB HDDs AE CS6 and AE CC 2014 (most recent updates) Mac OS 10.7.5 and 10.9.4 on 1TB and 1.5TB seagate drives *** I have a test AE project, with render times on a 2007 3.0ghz 8 core = 32GB ram Mac Pro under 10.7.5 and CS6, required 40min in non multi = processor mode and 23 minutes under multi processor mode. I exhausted testing in CS6 to find the # processors and Ram/processor to = find the sweet spot for 64GB of system memory with 12/24 cores. The = project mentioned above renders in 8.5 -10 minutes under multi processor = mode in CS6 on this faster Mac Pro. The observation I have questions = about, is re-rendering this AE project and the render time being as fast = as 8min 15sec or as slow as 9min 56sec, while I have made no changes to = the project, AE settings or hardware. That seems like a very big swing = in rendering efficiency. I have wondered if the mixed bag of memory modules may have some = inherent issues which might intermittently contribute to the rendering = process. I have tested the ram with Rember and Tech Tool Pro and the = memory reported OK. I hope to shortly run the AHT on the MacPro to see = if it finds any issues with the memory or the computer. I have tried = deleting the rendered files from the SSD in case those files might have = contributed to a slowing down of the SSD read/write speed. I won't get into trying to test AE CC, as that appears to be another = can of worms, as far as AE CC being "render crippled" compared to CS6.=20= I would welcome comments or suggestions to help me understand why some = CS6 renders of the same project file are more than 20% better with no = changes in the set up.=20 Thanks RJ MIles MacTunes ...=