The above code wasn't using the HDF5-based JLD package/format, it was just
using .jld as a file extension to store the results of serialize(). Should
probably use some different extension for that, .jls or something, to avoid
confusion.
On Monday, August 10, 2015 at 12:45:35 PM UTC-7, Stefan Karpinski wrote:
>
> JLD doesn't support serializing functions but Julia itself does.
>
> On Mon, Aug 10, 2015 at 3:43 PM, Andrei Zh <faithle...@gmail.com
> <javascript:>> wrote:
>
>> I'm afraid it's not quite true, and I found simple way to show it. In the
>> next code snippet I define function `f` and serialize it to a file:
>>
>> julia> f(x) = x + 1
>> f (generic function with 1 method)
>>
>> julia> f(5)
>> 6
>>
>> julia> open("example.jld", "w") do io serialize(io, f) end
>>
>>
>> Then I close Julia REPL and in a new session try to load and use this
>> function:
>>
>> julia> f2 = open("example.jld") do io deserialize(io) end
>> (anonymous function)
>>
>> julia> f2(5)
>> ERROR: function f not defined on process 1
>> in error at error.jl:21
>> in anonymous at serialize.jl:398
>>
>>
>> So deserialized function still refers to the old definition, which is not
>> available in this new session.
>>
>> Is there any better way to serialize a function and run it on an
>> unrelated Julia process?
>>
>>
>> On Monday, August 10, 2015 at 2:33:11 PM UTC+3, Jeff Waller wrote:
>>>
>>>
>>>
>>>> My question is: does Julia's serialization produce completely
>>>> self-containing code that can be run on workers? In other words, is it
>>>> possible to send serialized function over network to another host / Julia
>>>> process and applied there without any additional information from the
>>>> first
>>>> process?
>>>>
>>>> I made some tests on a single machine, and when I defined function
>>>> without `@everywhere`, worker failed with a message "function myfunc not
>>>> defined on process 1". With `@everywhere`, my code worked, but will it
>>>> work
>>>> on multiple hosts with essentially independent Julia processes?
>>>>
>>>
>>> According to Jey here
>>> <https://groups.google.com/forum/#!searchin/julia-users/jey/julia-users/bolLGcSCrs0/fGGVLgNhI2YJ>,
>>>
>>> Base.serialize does what we want; it's contained in serialize.jl
>>> <https://github.com/JuliaLang/julia/blob/master/base/serialize.jl>
>>>
>>>
>
