From 112be99b198d37b89de23e568609d8d0cab0baaf Mon Sep 17 00:00:00 2001
From: William Falcon <falc@fb.com>
Date: Thu, 18 Jul 2019 14:57:56 -0400
Subject: [PATCH] testing single process ddp

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

diff --git a/pytorch_lightning/models/trainer.py b/pytorch_lightning/models/trainer.py
index e1ad3432..fca35330 100644
--- a/pytorch_lightning/models/trainer.py
+++ b/pytorch_lightning/models/trainer.py
@@ -375,7 +375,7 @@ class Trainer(TrainerIO):
             print('using ddp')
             # must copy only the meta of the exp so it survives pickle/unpickle when going to new process
             self.experiment = self.experiment.get_meta_copy()
-            task = os.environ['SLURM_ARRAY_TASK_ID']
+            task = os.environ['SLURM_LOCALID']
             print(f'task: {task}')
             self.ddp_train(task, model)
             # mp.spawn(self.ddp_train, nprocs=len(self.data_parallel_device_ids), args=(model, ))