Low speed in poisson mesh and texture

[ztcyhh]

When i try to reconstruct a construction site point cloud in meshlab, it's about 10 million points and 500 images, but i use about 3 hrs to do poisson meshing（depth=12） and 12 hrs to texture（8 million meshs，texture size =1024）.
It's too slow for me. So i try to figure out what's going on.
And i check the equipment i use. It seems like only use cpu when doing poisson mesh, is it normal? or how can i speed up the [progress?]

The gpu usage is just the same as before (some other program is running on).

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[ztcyhh]

CPU：E5-2683 V4
GPU：RTX 3090 * 2

[ztcyhh]

When i use colmap to mesh, it only tasks about 20 min.

[alemuntoni]

It is normal that it uses only CPU. The implementation of the algorithm is made to only run in parallel on CPU. It does not use GPU.