This would work too
let S=S
output1 = pmap(i -> f(S,i), 1:length(S))
end
On Fri, Aug 12, 2016 at 10:17 PM, Amit Murthy <[email protected]> wrote:
> Since S is global, the closure i -> f(S,i) only captures a reference to
> S. And since this binding is not defined on the workers we see an error.
>
> For example,
>
> function foo()
> S = SharedArray(Int,10)
> S[:] = 1:length(S)
>
> output1 = pmap(i -> f(S,i), 1:length(S))
> end
>
> foo()
>
> works as expected.
>
> I agree that this is confusing.
>
>
> On Fri, Aug 12, 2016 at 10:28 AM, 'Greg Plowman' via julia-users <
> [email protected]> wrote:
>
>> pmap inside a function also seems to work:
>>
>> @everywhere f(A,i) = (println("A[$i] = $(A[i])+1"); A[i] += 1)
>> wrapped_pmap(A) = pmap(i -> f(A,i), 1:length(A))
>>
>> S = SharedArray(Int,10)
>> S[:] = 1:length(S)
>>
>> output1 = pmap(i -> f(S,i), 1:length(S)) #error
>> output2 = wrapped_pmap(S) #seems to work
>>
>>
>> I'm quite confused about why second version with pmap wrapped in a
>> function works.
>> Perhaps someone can explain?
>>
>>
>>
>
