title: run migrations in parallel django?
body: <p>The current project has around 620 django models, which takes around 1 hour to migrate. . (uses only 12.x% of 8 core intel skylake with 1.2gigs of 30gigs ram on gcloud while migration) this metrics is combined for pg and python 2 (cpython). I assume that only a single core is used while migrating. [celery processes uses 100% CPU + 50% of ram. ] </p>
  
  <p>each migration is like,</p>
  
  <pre><code>class Migration(migrations.Migration):
  
      initial = True
  
      dependencies = [
          ('dist', '0001_initial'),
      ]
  
      operations = [
          migrations.CreateModel(
              name='model name',
              fields=[
                  ...
                  ...
                  60 fields
                  ...
                  ...
              ],
              options={
                  'abstract': False,
              },
          ),
      ]
  </code></pre>
  
  <p>they are identical but with some minor changes to fields.</p>
  
  <p>Is there any way to migrate this database faster? can I run migrations on parallel? since migrations after 30 (internal apps and dists) are not related to each other, can I run these migrations in parallel?</p>
  
  <p>thank you</p>