update small test case

Smilei/machines/occigen-bdw/batch_small.slurm

@@ -5,7 +5,7 @@
 #SBATCH --cpus-per-task=14
 #SBATCH -J tst_accelec
 #SBATCH --constraint=BDW28
-#SBATCH --time=00:30:00
+#SBATCH --time=01:30:00
 #SBATCH --output=small_test.out
 
 ## Set the working dir to the dir in which the submission was called.

Smilei/testcase_small/README.md

@@ -3,6 +3,8 @@ Test case presentation
 
 The small test case is a very well balanced plasma simulation. This test case is very well vectorized and can be tuned to scale up to a thousand of node if necessary. 
 
+It requires about 2TB of RAM to run.
+
 
 Case profile
 ------------