Update readme.md

install/readme.md

@@ -205,12 +205,12 @@ This is an example case.
 
 In `case/` you should be able to
 * `mpiexec -n 2 ./initcond`
-* `mpiexec -n 2 ./tube`
+* `mpiexec ./tube`
 or substitute in your mpi runner like `srun`.
 
-Note that on Phoenix, `srun` only works if you [salloc](https://docs.pace.gatech.edu/phoenix_cluster/slurm_guide_phnx/) a new node.
+Note that on Phoenix, `srun` only works if you [salloc](https://gatech.service-now.com/home?id=kb_article_view&sysparm_article=KB0041998) a new node. Also, not specifying a node count via the `-n` flag will use all the cores on the machine which is necessary for a simulation with high cell counts or the parallel `./initcond` file in `examples/randomized_case`.
 
 ## Data and visualization
 
-After running `srun -n 2 ./tube` or the equivalent, you should see `x000*.dat`, `xe000*.dat`, `wall000*.dat`, and restart files.
+After running `srun ./tube` or the equivalent, you should see `x000*.dat`, `xe000*.dat`, `wall000*.dat`, and restart files.
 You can load the `.dat` files into Paraview to visualize them.