that did help a lot:
function testSpeed()
A = rand(100000000)
B = zeros(Float64, size(A, 1))
tic()
B = exp(A)
toc()
tic()
@devec B = exp(A)
toc()
end
testSpeed()
but it's still a little slower.. the above example is 1.515 in the first
test and 1.533 in the second
On Monday, March 3, 2014 8:31:59 PM UTC-5, Stefan Karpinski wrote:
>
> Global
> scope<http://julia.readthedocs.org/en/latest/manual/performance-tips/#avoid-global-variables>
> ?
>
>
> On Mon, Mar 3, 2014 at 8:16 PM, Jason Solack <[email protected]<javascript:>
> > wrote:
>
>> Hello all. I am trying to use Devectorize to speed up some code i have
>> written but it's having the opposite effect. Am i doing something wrong?
>> Take this example
>>
>>
>> A = rand(1000000)
>> B = zeros(Float64, size(A, 1))
>>
>> tic()
>> B = exp(A)
>> toc()
>>
>> tic()
>> @devec B = exp(A)
>> toc()
>>
>>
>> in the first exp runs in 0.02319 seconds on my machine, the second runs
>> in .2664 seconds... i expected the opposite to happen!
>>
>> Thank you for any help on understanding how this macro works!
>>
>> Jason
>>
>
>
