Synchronization in REPL

[michel2323]

On Julia 1.9.3 with the latest master with system ROCm 5.4 the result of a .+ b is not synchronized in the REPL.

julia> using AMDGPU

julia> a = ROCVector(ones(2))
2-element ROCArray{Float64, 1, AMDGPU.Runtime.Mem.HIPBuffer}:
 1.0
 1.0

julia> b = ROCVector(ones(2))
2-element ROCArray{Float64, 1, AMDGPU.Runtime.Mem.HIPBuffer}:
 1.0
 1.0

julia> a .+ b
2-element ROCArray{Float64, 1, AMDGPU.Runtime.Mem.HIPBuffer}:
 -1.8325506472120096e-6
 -1.8325506472120096e-6

julia> @show a .+ b
a .+ b = [2.0, 2.0]
2-element ROCArray{Float64, 1, AMDGPU.Runtime.Mem.HIPBuffer}:
 2.0
 2.0

[luraess]

That may occur since the REPL may print after the kernel launch returned while computations were not finalised. One would need sync afterwards. This behaviour was already observed with earlier versions of Julia and AMDGPU.

[pxl-th]

#501 will fix this.