fix ray issue

app.py

@@ -5,6 +5,7 @@ import time
 import multiprocessing as mp
 import json
 
+import ray
 from PIL import Image
 from compiled_jss.CPEnv import CompiledJssEnvCP
 
@@ -46,6 +47,14 @@ def make_env(seed, instance):
 
 
 def solve(file):
+    ray.init(log_to_driver=False,
+             reuse_actors=True,
+             include_dashboard=False, runtime_env={
+        "env_vars": {
+            # force `ray` to not kill a proces on OOM but use SWAP instead
+            "RAY_DISABLE_MEMORY_MONITOR": "1",
+        }
+    })
     random.seed(0)
     np.random.seed(0)
     torch.manual_seed(0)