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Array of type generates error in parallel computing
1 post by 1 author  



Simone Mazzola 	

10/22/15


Hi all,

I'm really new to Julia language, especially in parallel computing. My general code structure is something like this:

####
using MyModule #  in this module the type "MyType" is defined

MyTypeArray=Array(MyType,z)


for i=1:z
println(MyTypeArray[i])
end
####

Using the standard loop cycle everything works fine. If I try to move to parallel computing using this:

####
using MyModule #  in this module the type "MyType" is defined

MyTypeArray=Array(MyType,z)

@parallel for i=1:z
println(MyTypeArray[i])
end
####

the code doesn't work and I obtain this error for each worker:

1-element Array{Any,1}:

fatal error on 2:  RemoteRef{Channel{Any}}(2,1,4)



julia> ERROR: MethodError: `convert` has no method matching convert(::Type{LambdaStaticData}, ::Array{Any,1})

This may have arisen from a call to the constructor LambdaStaticData(...),

since type constructors fall back to convert methods.

Closest candidates are:

  call{T}(::Type{T}, ::Any)

  convert{T}(::Type{T}, !Matched::T)

 in deserialize at serialize.jl:534

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:694

 in deserialize_datatype at serialize.jl:647

 in handle_deserialize at serialize.jl:461

 in deserialize_array at serialize.jl:612

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:694

 in deserialize_datatype at serialize.jl:647

 in handle_deserialize at serialize.jl:461

 in deserialize_array at serialize.jl:612

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:480

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:536

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:480

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:536

 in handle_deserialize at serialize.jl:461

 in deserialize at serialize.jl:694

 in deserialize_datatype at serialize.jl:647

 in handle_deserialize at serialize.jl:461

 in message_handler_loop at multi.jl:847

 in process_tcp_streams at multi.jl:836

 in anonymous at task.jl:63

Worker 2 terminated.

ERROR (unhandled task failure): EOFError: read end of file


Does anyone have any suggestion?

Thanks,
Simone