Array wrappers for working with aligned memory allocations suitable for efficient GPU and RDMA transfers.
AlignedArrays.jl is still in early development, and currently only works for Linux systems.
Basic usage follows that of standard Array, Vector, Matrix types, but with the added parameter depicting the alignment of the array's memory.
Use AlignedArray, AlignedVector, or AlignedMatrix to specify memory alignment as a type parameter.
We provide PageAlignedArray, PageAlignedVector, and PageAlignedMatrix for convenience when allocations using the system's page-alignment is desired.
julia> using AlignedArrays
julia> x = Vector{Int32}(undef, 5)
5-element Array{Int32,1}:
1897413280
32662
1826880912
32662
1730212208
julia> y = PageAlignedVector{Int32}(undef, 5)
5-element Array{Int32,1}:
0
0
0
0
0
julia> z = AlignedVector{Int32, 1024}(undef, 5)
5-element Array{Int32,1}:
-1
-1
-1
-1
-1
julia> typeof(y)
AlignedArray{Int32,1,4096}
julia> typeof(z)
AlignedArray{Int32,1,1024}
julia> pointer(x)
Ptr{Int32} @0x00007f966a213850
julia> pointer(y)
Ptr{Int32} @0x00000000029cf000
julia> pointer(z)
Ptr{Int32} @0x00000000029fd800
julia> y .= x
5-element Array{Int32,1}:
1897413280
32662
1826880912
32662
1730212208
julia> for i in y
println(i)
end
1897413280
32662
1826880912
32662
1730212208