krystophny

import concurrent.futures
import matplotlib.pyplot as plt
import numpy as np
import time, random

def do_stuff(a):   # these are examples.
    x = np.linspace(1,10)
    plt.plot(x, np.cos(a*x))
    plt.savefig('{}.png'.format(a))
    time.sleep(random.random())

krystophny

import matplotlib.pyplot as plt
import matplotlib.tri as mpltri
import meshio  # von https://github.com/nschloe/meshio

mesh = meshio.read('any_known_mesh_format.msh')
tria = mpltri.Triangulation(mesh.points[:,0], mesh.points[:,1], mesh.cells['triangle'])

for k in range(nplots):
  plt.figure()
  plt.tricontourf(tria, plot_data[k])