Reduce number of threads per worker

julia/sr.jl

@@ -1,5 +1,5 @@
 import Optim
-using Printf
+import Printf: @printf
 
 const maxdegree = 2
 const actualMaxsize = maxsize + maxdegree

pysr/sr.py

@@ -213,7 +213,7 @@ const weights = convert(Array{Float32, 1}, """f"{weight_str})"
     command = [
         f'julia -O{julia_optimization:d}',
         f'-p {procs}',
-        f'--threads auto',
+        f'--threads 2', #Threading within each worker
         f'/tmp/.runfile_{rand_string}.jl',
         ]
     if timeout is not None: