On Wednesday, October 21, 2015 03:32:04 PM Gabriel Gellner wrote:
> * I can't use LinSpace in matrix mult A * b::LinSpace, is this simply a
> Bug/Missing Feature?
Yes
> * LinSpace objects seem much slower when used in things like element
> multiplication A .* b::LinSpace is much much Slower than A .* b::Array, is
> this to be expected (the cost of the extra abstraction lack of required
> denseness) or simply a side effect of lack of optimization?
It's because we can't yet eliminate bounds-checks with @inbounds on anything
except Arrays.
> * In general if I make my code accept AbstractArray{Float64} in general
> should I expect a performance penalty when calling the function with
> Array{Float64} parameters?
None whatsoever. The only place that's a bad idea is in declarations of type-
fields, see
http://docs.julialang.org/en/latest/manual/performance-tips/#avoid-fields-with-abstract-type.
--Tim
