Setting $RecursionLimit across all parallel kernels

Question

I'm trying to optimize an elliptic curve factoring method by running it in parallel. There is a recursive step which required me to set the recursion limit higher than 256, however when I try and run it in parallel apparently the $RecursionLimit on each different kernel isn't changed.

Here's part of the output:

In[76]:= ParallelECFactor[2418059292539721278076064468260051655561,1000,40]
(kernel 4) $RecursionLimit::reclim: Recursion depth of 256 exceeded.
(kernel 3) $RecursionLimit::reclim: Recursion depth of 256 exceeded.
(kernel 2) $RecursionLimit::reclim: Recursion depth of 256 exceeded.
(kernel 1) $RecursionLimit::reclim: Recursion depth of 256 exceeded.
(* and many more *)

Answer 1

As sebhofer pointed out, my previous solution didn't work — a fact that I missed because I wrote it without an mma to test. The users who voted for it also must've missed it, because on the surface it looks like a straightshot answer, but no. So, here's Jackson's solution that works — Use ParallelEvaluate as:

ParallelEvaluate[$RecursionLimit = 10^6]

---

Here's my previous solution that doesn't work, but I'm leaving it here so that others will not try something similar.

Block[{$RecursionLimit = Infinity},
    SetSharedVariable[$RecursionLimit]
    (* your parallel code *)
]

Using Block allows you to temporarily modify $RecursionLimit so that the global value is unaffected andSetSharedVariable declares that the variable's value is synchronized across all kernels.