# Share object between master/workers
**URL:** https://discourse.julialang.org/t/share-object-between-master-workers/1098
**Category:** General Usage
**Created:** [December 21, 2016, 8:47pm UTC](https://discourse.julialang.org/t/share-object-between-master-workers/1098 "2016-12-21T20:47:45Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@evanfields](https://discourse.julialang.org/u/evanfields)
#### Post date: [December 21, 2016, 8:47pm UTC](https://discourse.julialang.org/t/share-object-between-master-workers/1098/1 "2016-12-21T20:47:45Z")
Is there a way to share an instance of a non-bits type between the master process and one or more workers? I’d like to do something like the following:
```julia
addprocs(1)
@everywhere MyType
x
end
@everywhere function print_x_twice(mt::MyType)
println(mt.x)
sleep(5)
println(mt.x)
end
mt = MyType(1)
shared_ref = SharedRef(mt)
@spawnat 2 begin
mt = get(SharedRef)
print_x_twice(mt)
end
sleep(.1)
mt.x = 100
```
and see output of
```julia
From worker 2: 1
From worker 2: 100
```
ie., I’d like changes made to `mt` on the master process to be visible on the worker. Of course, `SharedRef` isn’t a real type. Is there a way to do this? I’d think `RemoteChannel`, but I’ve read through the parallelism documentation half a dozen times and still don’t really understand how to use remote channels; certainly I haven’t been able to get the above working with a remote channel.
---
### Author:  [@evanfields](https://discourse.julialang.org/u/evanfields)
#### Post date: [December 22, 2016, 1:05am UTC](https://discourse.julialang.org/t/share-object-between-master-workers/1098/2 "2016-12-22T01:05:35Z")
Self-reply: I am still curious about how to do this because it seems like it could be useful. In the mean time, passing messages via `RemoteChannel` seems to work. Something like
```julia
rr = RemoteChannel()
x = ObjectWithRemoteChannel(rr)
@spawn dostuff(x)
push!(rr, message) # visible on the worker
```
---
### Author:  [@Mattriks](https://discourse.julialang.org/u/Mattriks)
#### Post date: [December 22, 2016, 2:22am UTC](https://discourse.julialang.org/t/share-object-between-master-workers/1098/3 "2016-12-22T02:22:39Z")
I’m not familiar with sharing objects, but for passing objects see also [`ParallelDataTransfer`](https://github.com/ChrisRackauckas/ParallelDataTransfer.jl).