I get this on newest master
julia> @time fill!(A, 0.);
0.007519 seconds (4 allocations: 160 bytes)
julia> @time A[:] = 0.;
0.010495 seconds (5 allocations: 176 bytes)
julia> @time ccall(:memset, Ptr{Void}, (Ptr{Void}, Cint, Csize_t), A, 0,
sizeof(A));
0.007656 seconds (4 allocations: 64 bytes)
Doesn't matter much though, won't be a bottle neck for anyones code.
On Monday, October 5, 2015 at 7:33:43 PM UTC+2, Tomas Lycken wrote:
>
> > but I'm using Julia 0.5, so maybe I have a better version of the A[:]
> assignment.
>
> I love how Julia just gets more and more powerful...
>
> // T
>
> On Monday, October 5, 2015 at 6:48:00 PM UTC+2, Steven G. Johnson wrote:
>>
>>
>>
>> On Monday, October 5, 2015 at 12:29:17 PM UTC-4, Kristoffer Carlsson
>> wrote:
>>>
>>> For me, the fill! version uses SIMD instructions so it is faster than
>>> the A[:] version.
>>>
>>> Steven, maybe you are on a julia version / computer where you don't get
>>> vectorized code from fill!.
>>>
>>
>> I'm on a machine with SIMD, but I'm using Julia 0.5, so maybe I have a
>> better version of the A[:] assignment.
>>
>
