new issues about parallel

[armgong]

JuliaLang/julia#10085 happens on julia 0.35 ,but not on 0.33 and 0.4
@mmaechler could you see two different r code? and verify following code on your julia 0.4 is ok?

1:following code can't run on julia 0.35

library(rjulia)
julia_init()
julia_eval("addprocs(1)")
for (i in 1:2)
{
 julia_void_eval(paste("r=remotecall(",i,", rand, 2, 2)",sep = ""))
 y <- j2r(" fetch(r)")
 cat("\n")
 cat("process", i, "got value:\n"); print(y)
}
julia_void_eval("rmprocs(workers())")

2 but if change code to this, it just ok,why this happends?

library(rjulia)
julia_init()
julia_eval("addprocs(1)")
julia_void_eval("r=remotecall(1, rand, 2, 2)")
y <- j2r(" fetch(r)")
y
julia_void_eval("r=remotecall(2, rand, 2, 2)")
y <- j2r(" fetch(r)")
y
julia_void_eval("rmprocs(workers())")

[armgong]

this code also failed on julia 0.35

library(rjulia)
julia_init()
julia_eval("addprocs(1)")
x<-c("r=remotecall(1, rand, 2, 2)","r=remotecall(2, rand, 2, 2)")
for (i in 1:2)
{
  julia_void_eval(x[i])
  y <- j2r("fetch(r)")
  cat("\n")
  cat("process", i, "got value:\n"); 
  print(y)
}
julia_void_eval("rmprocs(workers())")

[mmaechler]

@armgong : Was the code that fails in 3.5 running ok earlier, i.e., before my changes to RJulia?
Honestly, I have not looked into the whole parallel parts and issues, and am not knowledgable enough about julia to even try to see what exactly remotecall() should do.
Apropos: Any chance that j2r("fetch(r)") could be simplified into j2r("r")? I would prefer that and it seems not hard to do the change on the R end.

[armgong]

this issue is caused by _julia_ commit 06d01c2c773d6c4a2c44cdd809d541585ae489de , revert it will fix,but we need wait julia dev revert the commit.
and @mmaechler thank you for your modify demo and write help

[armgong]

this issue maybe will not solve by julia dev, so if anyone want avoid this issue. please use rjulia 0.4 branch which support julia 0.4 dev

[armgong]

julia 0.4 release, 0.4 branch of rjulia will be master, so close this issue