AnsweredAssumed Answered

Strange goings on in output rendering.

Question asked by Alexander Smith on Jan 23, 2018
Latest reply on Feb 9, 2018 by Michael Dirisio

Hi Everyone and a belated happy new year.


I am stretching my new setup by making it do a decent sized render but am experiencing some really strange issues shown in the attached screen grab of my task manager. I chose the render as GPU (graphics card) only but the task manager shows only 1% of usage on the GPU and maxing out at 99, 95% on the CPU.


Admittedly the render setup is big but the polygon rate is well well within tolerance.

3507 x 2480px (A4).


7000 passes

Bloom enabled

Depth Of Field enabled


I rendered the same spec' as above without bloom and DOF as a test and it rendered in about 6-7 hours I think which is still a long time to my mind. This one has been going 19 hours and says that it will be another 6!!


So the questions are twofold.


1. Does Bloom and DOF really require so much more calculation that it slow down a render by almost 3 quarters.

2. Why when I ask it to render with GPU only, is the GPU performing so little and the CPU maxing out?


Main parts of spec' is as follows.

Intel® Core™i7 Quad Core Processor i7-7700k (4.2GHz) 8MB Cache

32GB Corsair VENGEANCE DDR4 3000MHz (2 x 16GB)

PNY QUADRO P5000 16GB GDDR5, 2560 CUDA CORES - 4 x DP, 1 x DVI-D


Is the CPU just not up to it??