SurfaceExtration crash for big volume( = 4GB )

[feifeizuo]

Hi, I use surfaceextration for a large CT volume with size (dimx = 1903, dimy = 1024, dimz = 1069), type is ushort. but it's crash with

My PC have enough RAM and GPU Memory, why this happen ?

Thanks.

System:

• OS and version: [Windows 11 x64]
• GPU and OpenCL vendor (NVIDIA GTX 3090 24 GB, OpenCL 1.2)
• RAM: [128 GB]

Expected behavior SurfaceExtration work well for large ct.

[smistad]

There are limits to how large buffers can be in OpenCL. Try resizing your volume to 1024x1024x1024 before the surface extraction and see if that works.

C++ example:

auto resizer = ImageResizer::create(1024, 1024, 1024)
    ->connect(image);
auto extraction = SurfaceExtraction::create()
    ->connect(resizer);

[feifeizuo]

thanks smistad, I have try you solution. It works well.