Groups   40 of 99+      julia-users › Error running examples of parallel computing with Julia 2 posts by 2 authors      Charles Santana    Jan 12   Hi,  I am trying to figure out how to work with parallel computing with Julia. The documentation looks great, even for someone that has never worked with Parallel Computing  and that does not understand most of the concepts behind the documentation ;  .  Just to mention: I am working in a PC with Ubuntu. It has a 4-core processor.   To run the code I describe below I am calling the julia terminal as:  $ julia -p 4  I am following the documentation here: http:  docs.julialang.org en latest manual parallel-computing   For one example, specifically, I am facing some problems.   In this section: http:  docs.julialang.org en latest manual parallel-computing  id2  I am trying to run the following piece of code:   everywhere advection_shared_chunk! q, u    advection_chunk! q, u, myrange q ..., 1:size q,3 -1   function advection_shared! q, u       sync begin         for p in procs q               async remotecall_wait advection_shared_chunk!, p, q, u          end     end     q end  q   SharedArray Float64,  500,500,500   u   SharedArray Float64,  500,500,500     Run once to JIT-compile advection_shared! q,u   But I am facing the following error:  ERROR: MethodError: `remotecall_wait` has no method matching remotecall_wait ::Function, ::Int64, ::SharedArray Float64,3 , ::SharedArray Float64,3   Closest candidates are:   remotecall_wait ::LocalProcess, ::Any, ::Any...    remotecall_wait ::Base.Worker, ::Any, ::Any...    remotecall_wait ::Integer, ::Any, ::Any...   in anonymous at task-jl:447  ...and 3 other exceptions.   in sync_end at . task-jl:413   inlined code  from task-jl:422  in advection_shared! at none:2  What am I doing wrong here? As far as I know I am just reproducing the example in the docs... or not?  Thanks for any help,  Charles   --  Um axé! :   -- Charles Novaes de Santana, PhD https:  github.com cndesantana     Daniel Arndt    Jan 18   This was cross-posted on Stack Overflow and answered there: http:  stackoverflow.com questions 34755454 how-to-run-a-function-in-parallel-with-julia-language 34772735  Charles, I believe the community preference is that you choose one medium or the other, and do not cross post questions like this.  Cheers, Dan