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General / Negligible GPU usage on Alignmnet.
« on: August 13, 2020, 10:29:55 AM »
HI Alexy and team.
Our workstation has, in recent updates, stopped using the GPU, from what I can tell.
System:
TR 2920X
64 GB RAM
RTX 2080 ti
4 x 4TB RAID0
Metashape:
1.6.4
Process:
AlignPhotos: accuracy = High, preselection = generic, reference, keypoint limit = 80000, tiepoint limit = 4000, apply masks = 0, filter tie points = 0, adaptive fitting = 0
While the console window indicates that the GPU is being used to find matching image points, GPU-Z and windows system monitor both indicate that the GPU is idling at ~1%. Disk usage is high.
Console:
During this time the CPU load is average at 20% and the GPU load is 0-1%.
Use GPU is turned on in the settings, use CPU during GPU is turned off.
I'm at a bit of a loss and somewhat worried the enormous hardware investment was a wasted effort given that the older hardware ran considerable faster with a considerably lower overhead.
Our workstation has, in recent updates, stopped using the GPU, from what I can tell.
System:
TR 2920X
64 GB RAM
RTX 2080 ti
4 x 4TB RAID0
Metashape:
1.6.4
Process:
AlignPhotos: accuracy = High, preselection = generic, reference, keypoint limit = 80000, tiepoint limit = 4000, apply masks = 0, filter tie points = 0, adaptive fitting = 0
While the console window indicates that the GPU is being used to find matching image points, GPU-Z and windows system monitor both indicate that the GPU is idling at ~1%. Disk usage is high.
Console:
Code: [Select]
Detecting points...
Found 1 GPUs in 0.001 sec (CUDA: 0.001 sec, OpenCL: 0 sec)
Using device: GeForce RTX 2080 Ti, 68 compute units, free memory: 9185/11264 MB, compute capability 7.5
driver/runtime CUDA: 11000/8000
max work group size 1024
max work item sizes [1024, 1024, 64]
[GPU] photo 4146: 80000 points
[GPU] photo 4246: 80000 points
[GPU] photo 4346: 80000 points
[GPU] photo 4446: 80000 points
[GPU] photo 51: 80000 points
etc...
During this time the CPU load is average at 20% and the GPU load is 0-1%.
Use GPU is turned on in the settings, use CPU during GPU is turned off.
I'm at a bit of a loss and somewhat worried the enormous hardware investment was a wasted effort given that the older hardware ran considerable faster with a considerably lower overhead.
