Arbitrary components for the ReduceToPlane function?

[pkufourier]

In the MultiFabUtil.H I have see the ReduceToPlane function, and the following example:

int dir = 0; // x-direction
auto const& domain_box = geom.Domain().surroundingNodes(); // nodal data
auto const& ma = mf.const_arrays();
auto rr = ReduceToPlane<ReduceOpMax,KeyValuePair<Real,int>>
(dir, domain_box, mf,
[=] AMREX_GPU_DEVICE (int box_no, int i, int j, int k)
-> KeyValuePair<Real,int>
{
return {mabox_no, i};
});

However this is only for two components ,which is limited by the ,KeyValuePair. Is there any way to reduce to Plane for more than 2 components by one call, like the ParReduce operation, which can use TypeList and GpuTuple to list arbitrary components?

[WeiqunZhang]

Unfortunately, no. You will have to call the function multiple times.