Metal fails silently when Atomix is used with an unsupported operation

[efaulhaber]

MWE:

using KernelAbstractions, Atomix, Metal

@kernel function mykernel(result)
    i = @index(Global)
    Atomix.@atomic result[i] = 1
end

result = Metal.zeros(Int, 1)
mykernel(MetalBackend())(result, ndrange=1)
result

The result is

1-element MtlVector{Int64, Metal.PrivateStorage}:
 0

without any errors.

On CUDA, this error is thrown:
https://github.com/JuliaConcurrent/Atomix.jl/blob/main/ext/AtomixCUDAExt.jl#L13-L15

[vchuravy]

This is an issue with Metal.jl not reporting errors. Atomix.jl emits an error.

Atomix.jl/ext/AtomixMetalExt.jl

Line 52 in 771d9fe

error("not implemented")