Update README.md of QE

quantum_espresso/README.md

@@ -228,11 +228,15 @@ sbatch myjob
 
 ## UEABS test cases
 
+In the following  table we give the test sets available with this respository. We include here the small test A input
+since it allows rapid testing of the QE installation, but for benchmark purposes it has been superseded with the medium input 
+(test case C).
+
 | UEABS name | QE name | Description | k-points | Notes|
 |------------|---------------|-------------|----------|------|
-| Small test case | AUSURF | 112 atoms | 2 | < 4-8 nodes on most systems |
-| Large test case | GRIR443 | 432 | 4| Medium scaling, often 20 nodes |
-| Very Large test case | CNT | Carbon nanotube | | Large scaling runs only. Memory and time requirements very high|
+| test case A (small) | AUSURF | 112 atoms | 2 | < 4-8 nodes on most systems |
+| test case C (medium)| GRIR443 | 432 | 4| Medium scaling, often 20 nodes |
+| test case B (large) | CNT | Carbon nanotube | | Large scaling runs only. Memory and time requirements very high|
 
 
 __Last updated: 22-October-2020__