Google| Subject | As with our trolls, the problem wasn't the Mac Pro... |
| From | Alan Baker |
| Date | 02/07/2014 20:44 (02/07/2014 11:44) |
| Message-ID | <ld3d2k$r5r$1@news.datemas.de> |
| Client | |
| Newsgroups | comp.sys.mac.advocacy |
| Followups | Brake Dive, Acceleration Squat, Body Roll Works LLC (2d, 16h & 44m) |
...the problem was foolish assumptions about what the Mac Pro could do:
'In our recent review of the late 2013 Mac Pro, one of our sticking points was the OpenGL performance that trailed Windows on the same hardware. A particularly damning case was the high-polygon-scene performance in Autodesk Maya showing how OpenGL viewport 2 performance fell off a cliff when you pushed into very high polygon counts of over 20 million with the D700 in OS X.
While this issue still needs to be resolved for some programs like modo, some quick sleuthing by Apple and AMD shows that the problem was on the Autodesk side. Maya was not simply querying the GPU RAM; for some reason, it was using a hard ceiling on OS X, so the brutal performance hit was the result of that ceiling. Once you explicitly tell Maya to use your available VRAM with the environment variable MAYA_OGS_GPU_MEMORY_LIMIT=6000 in ~/Library/Preferences/Autodesk/maya/2014-x64/Maya.env, performance is perceptibly the same as in Windows in Boot Camp with very large scenes:'
<http://arstechnica.com/apple/2014/02/2013-mac-pro-firepro-d700-opengl-is-better-than-we-thought-it-was/>
02/07/2014-
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