From 7e54ad3f7c82114c1cbbc88e2c67d0760dd52c35 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 f9d96341..679661e7 100644
--- a/pytorch_lightning/models/trainer.py
+++ b/pytorch_lightning/models/trainer.py
@@ -381,6 +381,8 @@ 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)