Improve error message when assigning real valued arrray with complex numbers about cuda.jl HOT 4 CLOSED

Not really. This is exactly the same error message, just being rendered from the GPU. If you do what the error message suggests, running with -g2, you would see a similar stack trace:

ERROR: a exception was thrown during kernel execution.
Stacktrace:
 [1] Real at ./complex.jl:44
 [2] convert at ./number.jl:7
 [3] setindex! at /home/tim/Julia/pkg/CUDA/src/device/array.jl:166
 [4] setindex! at /home/tim/Julia/pkg/CUDA/src/device/array.jl:178
 [5] #35 at /home/tim/.julia/packages/GPUArrays/OKkAu/src/host/broadcast.jl:70

The only thing different here is that this is rendered as a plain Exception, which isn't easy to fix, and the fact that every thread reports an exception, which has already been reported in #1780. So I think we can close that in favour of the existing issue.

from cuda.jl.

And FWIW, it's not possible to detect and special case this before launching a GPU kernel, because the InexactError depends on the actual data:

julia> x .= 1+1im
ERROR: InexactError: Float32(1 + 1im)

julia> x .= 1+0im
1×1 Matrix{Float32}:
 1.0

from cuda.jl.

The only thing different here is that this is rendered as a plain Exception, which isn't easy to fix

I did the hard thing and improved reporting in #2342

from cuda.jl.

Cool thanks!
I give it a shot later

from cuda.jl.