Update README.md

challenges/gpu/README.md

@@ -122,12 +122,6 @@ Standard SBATCH directives:
 ```
 You must use --gres=gpu:2 to tell the job to use the node's GPUs. 
 
-We will also use NVprof, NVIDIA's built-in profiler. It will show you that your code is running on the GPU and also give you performance information about the code. 
-
-To use nvprof issue:
-```
-mpirun nvprof ./vecAdd.o
-```
 
 ### Challenge 2 Submit a GPU Job with SLRUM
 
@@ -157,8 +151,7 @@ vi gpu.sbatch and fill in the missing parts of the script as described below.
 
 module purge
 module load pgi/19.4
-mpirun nvprof ./vecAdd.o
+./vecAdd.o
 
 ```
-When you code runs open your output files and see if the code ran on the GPU. 
-How long did it spend copying data to the GPU? 
+When you code runs open your output files and see if the vectors summed to 1.0.