diff --git a/data/frostt/reader.py b/data/frostt/reader.py
index 721bb50..355514a 100644
--- a/data/frostt/reader.py
+++ b/data/frostt/reader.py
@@ -1,23 +1,37 @@
 import gzip
 import shutil
 import ctf
+glob_comm = ctf.comm()
+import os
 
 modify = False
 
 def read_from_frostt(file_name, I, J, K):
 
 	unzipped_file_name = file_name + '.tns'
+	exists = os.path.isfile(unzipped_file_name)
 
-	with gzip.open(file_name + '.tns.gz', 'r') as f_in:
-		with open(unzipped_file_name, 'w') as f_out:
-			shutil.copyfileobj(f_in, f_out)
-
+	if not exists:
+		if glob_comm.rank() == 0:
+			print('Creating ' + unzipped_file_name)
+		with gzip.open(file_name + '.tns.gz', 'r') as f_in:
+			with open(unzipped_file_name, 'w') as f_out:
+				shutil.copyfileobj(f_in, f_out)
+	
 	T_start = ctf.tensor((I+1, J+1, K+1), sp=True)
+	if glob_comm.rank() == 0:
+		print('T_start initialized')
 	T_start.read_from_file(unzipped_file_name)
+	if glob_comm.rank() == 0:
+		print('T_start read in')
 	T = ctf.tensor((I,J,K), sp=True)
+	if glob_comm.rank() == 0:
+		print('T initialized')
 	T[:,:,:] = T_start[1:,1:,1:]
+	if glob_comm.rank() == 0:
+		print('T filled')
 
 	if modify:
 		T.write_to_file(unzipped_file_name)
 
-	return T
\ No newline at end of file
+	return T
diff --git a/data/frostt/test.py b/data/frostt/test.py
index 683baa3..a117095 100644
--- a/data/frostt/test.py
+++ b/data/frostt/test.py
@@ -10,5 +10,7 @@
 T = reader.read_from_frostt(file_name, I, J, K)
 if file_name == 'nell-2':
 	assert(T[0,182,606] == 1.0)
+elif file_name == 'nell-1':
+	assert(T[0,17350,8011251] == 1.0)
 elif file_name == 'amazon-reviews':
 	assert(T[0,305245,32024] == 1.0)