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Fixed in 2018.1.X
Votes
0
Found in
2018.1.0b12
Issue ID
1020360
Regression
No
[UnityJobSystem] IJobParallelFor is slower with ComputeJobOptimization attribute
How to reproduce:
1. Open tester-submitted project (Raytracer.zip)
2. Open scene "raytracer.unity"
4. Play the scene
5. Comment out "[ComputeJobOptimization]" at RaytraceSystem.cs line 24
6. Play the scene again
Expected result: [ComputeJobOptimization] gives performance increase
Actual result: [ComputeJobOptimization] decreases performance
Reproducible with: 2018.1.0b12 (Unity Job System preview build)
Not reproducible with:
5.6, 2017.1, 2017.2, 2017.3, 2017.4 - Unity Job System was not implemented
2018.1, 2018.2 - missing libraries and project compatibility problems
Notes:
* With [ComputeJobOptimization(Accuracy.Low, Support.Relaxed)], frame times were roughly around 155ms
* Without [ComputeJobOptimization], frame times were roughly around 28.5ms
Reproduced on:
* PC
* Windows 10 64bit
* Intel(R) Xeon(R) W-2145 CPU @ 3.70GHz
* 32GB RAM
* Radeon(TM) Pro WX 9100
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