minor: relax rtol in test_solver

Author: mrava87

tests/test_solver.py

@@ -127,7 +127,7 @@ def test_cg(par):
             x0 = None
         y1 = BDiag * x_global
         xinv1 = pylops.cg(BDiag, y1, x0=x0, niter=par["nx"], tol=1e-5, show=True)[0]
-        assert_allclose(xinv_array, xinv1, rtol=1e-14)
+        assert_allclose(xinv_array, xinv1, rtol=1e-12)
 
 
 @pytest.mark.mpi(min_size=2)
@@ -175,7 +175,7 @@ def test_cgls(par):
             x0 = None
         y1 = BDiag * x_global
         xinv1 = pylops.cgls(BDiag, y1, x0=x0, niter=par["nx"], tol=1e-5, show=True)[0]
-        assert_allclose(xinv_array, xinv1, rtol=1e-14)
+        assert_allclose(xinv_array, xinv1, rtol=1e-12)
 
 
 @pytest.mark.mpi(min_size=2)
@@ -222,7 +222,7 @@ def test_cgls_broadcastdata(par):
             x0 = None
         y1 = Hstack @ x_global
         xinv1 = pylops.cgls(Hstack, y1, x0=x0, niter=par["nx"], tol=1e-5, show=True)[0]
-        assert_allclose(xinv_array, xinv1, rtol=1e-14)
+        assert_allclose(xinv_array, xinv1, rtol=1e-12)
 
 
 @pytest.mark.mpi(min_size=2)
@@ -272,7 +272,7 @@ def test_cgls_broadcastmodel(par):
             x0 = None
         y1 = Vstack @ x_global
         xinv1 = pylops.cgls(Vstack, y1, x0=x0, niter=par["nx"], tol=1e-5, show=True)[0]
-        assert_allclose(xinv_array, xinv1, rtol=1e-13)
+        assert_allclose(xinv_array, xinv1, rtol=1e-12)
 
 
 @pytest.mark.mpi(min_size=2)
@@ -336,7 +336,7 @@ def test_cg_stacked(par):
             x0 = None
         y1 = StackedBDiag * x_global
         xinv1 = pylops.cg(StackedBDiag, y1, x0=x0, niter=par["nx"], tol=1e-5, show=True)[0]
-        assert_allclose(xinv_array, xinv1, rtol=1e-14)
+        assert_allclose(xinv_array, xinv1, rtol=1e-12)
 
 
 @pytest.mark.mpi(min_size=2)
@@ -402,4 +402,4 @@ def test_cgls_stacked(par):
             x0 = None
         y1 = StackedBDiag * x_global
         xinv1 = pylops.cgls(StackedBDiag, y1, x0=x0, niter=par["nx"], tol=1e-5, show=True)[0]
-        assert_allclose(xinv_array, xinv1, rtol=1e-13)
+        assert_allclose(xinv_array, xinv1, rtol=1e-12)