Function resolution

src/lbm.cpp:73–83

	return bandwidth_bytes_per_cell;
}
uint3 resolution(const float3 box_aspect_ratio, const uint memory) { // input: simulation box aspect ratio and VRAM occupation in MB, output: grid resolution
#ifndef D2Q9
	float memory_required = (box_aspect_ratio.x*box_aspect_ratio.y*box_aspect_ratio.z)*(float)bytes_per_cell_device()/1048576.0f; // in MB
	float scaling = cbrt((float)memory/memory_required);
	return uint3(to_uint(scaling*box_aspect_ratio.x), to_uint(scaling*box_aspect_ratio.y), to_uint(scaling*box_aspect_ratio.z));
#else // D2Q9
	float memory_required = (box_aspect_ratio.x*box_aspect_ratio.y)*(float)bytes_per_cell_device()/1048576.0f; // in MB
	float scaling = sqrt((float)memory/memory_required);
	return uint3(to_uint(scaling*box_aspect_ratio.x), to_uint(scaling*box_aspect_ratio.y), 1u);
#endif // D2Q9
}

string default_filename(const string& path, const string& name, const string& extension, const ulong t) { // generate a default filename with timestamp
	string time = "00000000"+to_string(t);