add option for export suffix and dpi in plot script

scripts/util.py

@@ -75,7 +75,7 @@ class JobSetMulticore(JobSet):
                                          col_cumsum='requested_number_of_resources') # original: proc_alloc
         return self._utilisation
     
-def plot_load_and_details(expe_file):
+def plot_load_and_details(expe_file, export_suffix="png", dpi=1000):
     begin, end = 24 * 3600, 48 * 3600
 
     js = JobSetMulticore.from_csv(expe_file + "/_jobs.csv")
@@ -90,7 +90,7 @@ def plot_load_and_details(expe_file):
         ax.xaxis.set_ticklabels(np.arange(24, 48, 2))
 
     plt.xlim(begin, end)
-    fig.savefig(expe_file + '_viz.png')
+    fig.savefig(f"{expe_file}_viz.{export_suffix}", dpi=dpi)
     plt.show()
     plt.close(fig)