From 7e37f68a5b6aa58ec4cdf4abe7d2e3295e418cf8 Mon Sep 17 00:00:00 2001
From: William Falcon <falc@fb.com>
Date: Fri, 12 Jul 2019 16:16:46 -0400
Subject: [PATCH] fixed nccl init

---
 pytorch_lightning/models/trainer.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pytorch_lightning/models/trainer.py b/pytorch_lightning/models/trainer.py
index b716e6592a..446a9e6e36 100644
--- a/pytorch_lightning/models/trainer.py
+++ b/pytorch_lightning/models/trainer.py
@@ -385,6 +385,8 @@ class Trainer(TrainerIO):
             port = 12910
             os.environ['MASTER_PORT'] = f'{port}'
 
+        sleep(self.proc_rank * 2)
+
         root_node = os.environ['SLURM_NODELIST'].split(' ')[0]
         os.environ['MASTER_ADDR'] = root_node
         dist.init_process_group("nccl", rank=self.proc_rank, world_size=self.world_size)