Reorganise testing and CI

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/test.yml

@@ -7,6 +7,10 @@ on:
       - master
   # And all pull requests
   pull_request:
+  schedule:
+    # * is a special character in YAML so you have to quote this string
+    # Scheduled run over the weekend to detect any upstream breaks.
+    - cron:  '0 1 * * 0'
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
@@ -40,25 +44,41 @@ jobs:
         # (copied from https://help.github.com/en/actions/migrating-to-github-actions/migrating-from-circleci-to-github-actions)
         run: |
           sudo chmod -R 777 $GITHUB_WORKSPACE /github /__w/_temp
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install test dependencies
         run: |
           . /home/firedrake/firedrake/bin/activate
           python -m pip install pytest-timeout
           python -m pip install pytest-cov
+          # try and reduce the number of warnings to sift through
+          python -m pip install siphash24
       - name: Install
         run: |
           . /home/firedrake/firedrake/bin/activate
           python -m pip install -e .
+          python --version
+          python -m pytest --version
+          flake8 --version
+          firedrake-status
       - name: Lint
         run: |
           . /home/firedrake/firedrake/bin/activate
-          flake8 --version
           flake8 .
-      - name: Test
+      - name: Test - unit tests
         run: |
           . /home/firedrake/firedrake/bin/activate
-          python --version
-          python -m pytest --version
-          firedrake-status
-          python -m pytest -v -n 6 --durations=40 --timeout=600 --cov=asQ --cov-report=term tests/
+          python -m pytest \
+            -n 12 --dist worksteal \
+            --durations=40 \
+            --timeout=300 \
+            --cov=asQ --cov-report=term \
+            -v tests/unit
+      - name: Test - integration tests
+        run: |
+          . /home/firedrake/firedrake/bin/activate
+          python -m pytest \
+            -n 4 --dist worksteal \
+            --durations=40 \
+            --timeout=600 \
+            --cov=asQ --cov-report=term --cov-append \
+            -v tests/integration

tests/allatonce/test_allatoncesolver.py → tests/integration/test_allatoncesolver_integration.py

@@ -3,82 +3,9 @@
 import pytest
 
 
-@pytest.mark.parallel(nprocs=6)
-def test_solve_heat_equation_nopc():
-    """
-    Tests the basic solver setup using the heat equation.
-    Solves using unpreconditioned GMRES and checks that the
-    residual of the all-at-once-form is below tolerance.
-    """
-
-    # set up space-time parallelism
-
-    nslices = fd.COMM_WORLD.size//2
-    slice_length = 2
-
-    time_partition = tuple((slice_length for _ in range(nslices)))
-    ensemble = asQ.create_ensemble(time_partition, comm=fd.COMM_WORLD)
-
-    mesh = fd.UnitSquareMesh(6, 6, comm=ensemble.comm)
-    V = fd.FunctionSpace(mesh, "CG", 1)
-
-    # all-at-once function and initial conditions
-
-    x, y = fd.SpatialCoordinate(mesh)
-    ics = fd.Function(V).interpolate(fd.exp(-((x - 0.5)**2 + (y - 0.5)**2) / 0.5**2))
-
-    aaofunc = asQ.AllAtOnceFunction(ensemble, time_partition, V)
-    aaofunc.assign(ics)
-
-    # all-at-once form
-
-    dt = 0.01
-    theta = 1.0
-
-    def form_function(u, v, t):
-        return fd.inner(fd.grad(u), fd.grad(v))*fd.dx
-
-    def form_mass(u, v):
-        return fd.inner(u, v)*fd.dx
-
-    aaoform = asQ.AllAtOnceForm(aaofunc, dt, theta,
-                                form_mass, form_function)
-
-    # solver and options
-
-    atol = 1.0e-10
-    solver_parameters = {
-        'snes_type': 'ksponly',
-        'snes': {
-            'monitor': None,
-            'converged_reason': None,
-        },
-        'pc_type': 'none',
-        'ksp_type': 'gmres',
-        'mat_type': 'matfree',
-        'ksp': {
-            'monitor': None,
-            'converged_rate': None,
-            'atol': atol,
-            'rtol': 1.0e-100,
-            'stol': 1.0e-100,
-        }
-    }
-
-    aaosolver = asQ.AllAtOnceSolver(aaoform, aaofunc,
-                                    solver_parameters=solver_parameters)
-
-    aaosolver.solve()
-
-    # check residual
-
-    aaoform.assemble(func=aaofunc)
-    residual = fd.norm(aaoform.F.function)
-
-    assert residual < atol, "GMRES should converge to prescribed tolerance even without preconditioning"
-
-
-def test_solve_heat_equation_circulantpc():
+@pytest.mark.parallel(nprocs=4)
+@pytest.mark.parametrize('partition', ['serial', 't-parallel', 'st-parallel'])
+def test_solve_heat_equation_circulantpc(partition):
     """
     Tests the basic solver setup using the heat equation.
     Solves using GMRES preconditioned with the CirculantPC
@@ -89,8 +16,22 @@ def test_solve_heat_equation_circulantpc():
     # set up space-time parallelism
 
     window_length = 4
+    nprocs = fd.COMM_WORLD.size
+    assert window_length % nprocs == 0, "test setup incorrectly"
+
+    if partition == 'serial':
+        time_partition = window_length
+    elif partition == 't-parallel':
+        nslices = nprocs
+        slice_length = window_length//nslices
+        time_partition = [slice_length for _ in range(nslices)]
+    elif partition == 'st-parallel':
+        nslices = nprocs//2
+        slice_length = window_length//nslices
+        time_partition = [slice_length for _ in range(nslices)]
+    else:
+        assert False, "Unrecognised partition type"
 
-    time_partition = window_length
     ensemble = asQ.create_ensemble(time_partition, comm=fd.COMM_WORLD)
 
     mesh = fd.UnitSquareMesh(6, 6, comm=ensemble.comm)
@@ -166,7 +107,7 @@ def form_mass(u, v):
 @pytest.mark.parallel(nprocs=4)
 @pytest.mark.parametrize("extrude", extruded)
 @pytest.mark.parametrize("cpx_type", cpx_types)
-def test_solve_mixed_wave_equation(extrude, cpx_type):
+def test_solve_mixed_wave_equation_circulantpc(extrude, cpx_type):
     """
     Tests the solver setup using a nonlinear wave equation.
     Solves using GMRES preconditioned with CirculantPC and checks
@@ -249,10 +190,11 @@ def form_mass(uu, up, vu, vp):
             'stol': 1e-100,
         },
         'mat_type': 'matfree',
-        'ksp_type': 'preonly',
+        'ksp_type': 'gmres',
         'ksp': {
             'monitor': None,
             'converged_reason': None,
+            'rtol': 1e-3,
         },
         'pc_type': 'python',
         'pc_python_type': 'asQ.CirculantPC',