Hi Wang, I think your Nvidia 4090 should handle the large tomogram fine, and probably the slowdown is because having 1000-2000 open model of any kind, even if they are small like your subtomo maps, is more than ChimeraX was designed to handle. I am surprised though that rotating the view becomes slow because that should just move the camera which should not depend on the number of models shown. Do I understand correctly that you just open the tomogram and 1000-2000 subtomograms, display them all, and rotate and it updates slowly? How slowly, like 1 frame per second, or does it freeze for ten seconds? What display style do you use for the subtomograms, surface or volumetric? You might be interested in the ArtiaX ChimeraX extension which is for looking at particles in tomograms. You would get it using ChimeraX menu Tools / More Tools.... Tom

On Sep 5, 2024, at 1:15 AM, 王光磊 via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Hi,

I'm using chimerax to display my tomograph and multiple subtomo averages in surface mode. Specifically, I need to visualize a 1440*1022*250 tomograph, along with 1000-2000 subtomo maps, sized at 32x32x32 and 16x16x16. However, loading such a large number of maps has significantly slowed down ChimeraX, particularly when rotating the view. Is there any settings to improve interactive performance or increase hardware utilization? I hope to avoid cropping the tomograph.

My system specifications are as follows:

Dual Intel Xeon 5317 processors@3.00GHz RTX 4090 GPU 128GB RAM Operating System: CentOS Stream 9 GNOME Version: 40.4 GPU Driver Version: 550.54.15 I would greatly appreciate any suggestions.

Thanks,

Wang GuangLei

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