diff --git a/src/Io.jl b/src/Io.jl
index 02afc19e..7cb3912a 100644
--- a/src/Io.jl
+++ b/src/Io.jl
@@ -43,6 +43,7 @@ a set of JLD2 files corresponding to each part.
 function psave(dir::AbstractString, x)
   ranks = get_parts(x)
   i_am_main(ranks) && mkpath(dir)
+  fetch(ranks)
   arr = to_local_storage(x)
   map(ranks,arr) do id, arr
     filename = joinpath(dir,basename(dir)*"_$id.jdl2")