add content in slide 4

lectures/parallelism/slides.qmd

@@ -30,10 +30,8 @@ task-parallelism we should probably give a real definition and different flavour
 
 ::: {.column width="50%"}
 * 1d Tsunami equation
-* Korteweg–De Vries equation
+* Korteweg–De Vries equation - "PDE modeling waves on shallow water surfaces" [Wikipedia](https://en.wikipedia.org/wiki/Korteweg%E2%80%93De_Vries_equation)
 * Discretization not numerically accurate
-* [Wikipedia](https://en.wikipedia.org/wiki/Korteweg%E2%80%93De_Vries_equation)
-* FIXME
 :::
 
 ::: {.column width="50%"}
@@ -70,6 +68,12 @@ FIXME
 ```
 
 ## Hands-on Session! {background-color=var(--dark-bg-color) .leftalign}
+1. Load the GNU compliler and compile the code on Levante
+```bash
+module load gcc
+g++ main.cpp -o main
+```
+
 
 1. Compile and run the example serially. Use `time ./serial.x` to time the execution.
 23. Compile and run the example using OpenMP. Use `OMP_NUM_THREADS=2 time ./omp.x` to time the execution.
@@ -212,7 +216,6 @@ Wikipedia
 :::
 
 
-
 ## Types of parallelism
 * **Data-level parallelism** supported by hardware through 
   * instruction-level parallelism (e.g. pipelining)