Add plot script and move scripts to util directory

Signed-off-by: Rafael Ravedutti <rafaelravedutti@gmail.com>

util/plot_run_stub_data.py

@@ -0,0 +1,39 @@
+import matplotlib.pyplot as plt
+import sys
+
+vector_width = 8 # 8 doubles per zmm vector
+
+filename = sys.argv[1]
+output_file = filename.replace(".txt", ".pdf")
+fig = plt.figure()
+ax = plt.axes()
+plot_data = {}
+
+with open(filename, 'r') as fp:
+    for line in fp.readlines():
+        steps, unit_cells, atoms_per_unit_cell, total_atoms, total_vol, atoms_vol, neigh_vol, time, atom_upds_per_sec, cy_per_atom, cy_per_neigh = line.split(',')
+        atoms_per_unit_cell = int(atoms_per_unit_cell)
+        vol = float(neigh_vol)
+        cy_per_atom = float(cy_per_atom)
+
+        if atoms_per_unit_cell < 2048:
+            if atoms_per_unit_cell not in plot_data:
+                plot_data[atoms_per_unit_cell] = {}
+
+            cy_per_iter = cy_per_atom * vector_width / atoms_per_unit_cell
+            plot_data[atoms_per_unit_cell][vol] = cy_per_iter if vol not in plot_data[atoms_per_unit_cell] \
+                                                  else min(cy_per_iter, plot_data[atoms_per_unit_cell][vol])
+
+for atoms_per_unit_cell in plot_data:
+    volumes = list(plot_data[atoms_per_unit_cell].keys())
+    volumes.sort()
+    cycles = [plot_data[atoms_per_unit_cell][vol] for vol in volumes]
+    ax.plot(volumes, cycles, marker='.', label=str(atoms_per_unit_cell))
+
+ax.vlines([32, 1000, 28000], 0, 1, transform=ax.get_xaxis_transform(), linestyles='dashed', color=['#444444', '#777777', '#aaaaaa'])
+ax.set(xlabel='Neighbor data volume (kB)', ylabel='Cycles per iteration')
+ax.set_xscale('log')
+#ax.set_xticks([32, 1000, 28000])
+#ax.set_xlim(0, 200000)
+plt.legend(title="atoms/uc")
+fig.savefig(output_file, bbox_inches = 'tight', pad_inches = 0)