Libensemble · jlnav · May 26, 2026 · May 26, 2026 · May 27, 2026 · May 27, 2026
diff --git a/.github/workflows/basic.yml b/.github/workflows/basic.yml
@@ -98,4 +98,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: crate-ci/typos@v1.47.2
+      - uses: crate-ci/typos@v1.48.0
diff --git a/.github/workflows/extra.yml b/.github/workflows/extra.yml
@@ -76,7 +76,6 @@ jobs:
           rm ./libensemble/tests/unit_tests/test_ufunc_runners.py # needs globus-compute
           rm ./libensemble/tests/regression_tests/test_gpCAM.py # needs gpcam, which doesn't build on 3.13
           rm ./libensemble/tests/regression_tests/test_asktell_gpCAM.py # needs gpcam, which doesn't build on 3.13
-          rm ./libensemble/tests/regression_tests/test_persistent_gp_multitask_ax.py # needs ax-platform, which doesn't yet support 3.14
           rm ./libensemble/tests/regression_tests/test_optimas_ax_mf.py # needs ax-platform, which doesn't yet support 3.14
           rm ./libensemble/tests/regression_tests/test_optimas_ax_sf.py # needs ax-platform, which doesn't yet support 3.14
 
@@ -111,4 +110,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: crate-ci/typos@v1.47.2
+      - uses: crate-ci/typos@v1.48.0
diff --git a/docs/examples/ax_multitask.rst b/docs/examples/ax_multitask.rst
diff --git a/docs/platforms/frontier.rst b/docs/platforms/frontier.rst
@@ -64,10 +64,9 @@ Now grab an interactive session on one node::
 
 Then in the session run::
 
-    python run_libe_forces.py --nworkers 9
+    python run_libe_forces.py --nworkers 8
 
-This places the generator on the first worker and runs simulations on the
-others (each simulation using one GPU).
+The workers will each run simulations with one GPU each.
 
 To see GPU usage, ssh into the node you are on in another window and run::
 

diff --git a/docs/platforms/perlmutter.rst b/docs/platforms/perlmutter.rst
@@ -96,10 +96,9 @@ Now grab an interactive session on one node::
 Then in the session run::
 
     export LIBE_PLATFORM="perlmutter_g"
-    python run_libe_forces.py -n 5
+    python run_libe_forces.py -n 4
 
-This places the generator on the first worker and runs simulations on the
-others (each simulation using one GPU).
+The workers will each run simualations with one GPU each.
 
 To see GPU usage, ssh into the node you are on in another window and run::
 

diff --git a/docs/tutorials/xopt_bayesian_gen.rst b/docs/tutorials/xopt_bayesian_gen.rst
@@ -52,7 +52,7 @@ Define the VOCS specification and set up the generator.
 
 .. code-block:: python
 
-    libE_specs = LibeSpecs(gen_on_manager=True, nworkers=4)
+    libE_specs = LibeSpecs(nworkers=4)
 
     vocs = VOCS(
         variables={"x1": [0, 1.0], "x2": [0, 10.0]},

diff --git a/examples/tutorials/gpcam_surrogate_model/gpcam.ipynb b/examples/tutorials/gpcam_surrogate_model/gpcam.ipynb
@@ -285,9 +285,9 @@
     "\n",
     "nworkers = 4\n",
     "\n",
-    "# When using gen_on_manager, nworkers is number of concurrent sims.\n",
+    "# nworkers is number of concurrent sims.\n",
     "# final_gen_send means the last evaluated points are returned to the generator to update the model.\n",
-    "libE_specs = LibeSpecs(nworkers=nworkers, gen_on_manager=True, final_gen_send=True)\n",
+    "libE_specs = LibeSpecs(nworkers=nworkers, final_gen_send=True)\n",
     "\n",
     "n = 2  # Input dimensions\n",
     "batch_size = 4\n",
@@ -400,7 +400,7 @@
     "import matplotlib\n",
     "import matplotlib.pyplot as plt\n",
     "\n",
-    "# Get \"mean_squared_error\" from generators return (worker 0 as we ran gen_on_manager)\n",
+    "# Get \"mean_squared_error\" from generators return\n",
     "mse = persis_info[0][\"mean_squared_error\"]\n",
     "niter = len(mse)\n",
     "num_sims = list(range(batch_size, (niter * batch_size) + 1, batch_size))\n",

diff --git a/examples/tutorials/xopt_bayesian_gen/xopt_EI_example.ipynb b/examples/tutorials/xopt_bayesian_gen/xopt_EI_example.ipynb
@@ -98,7 +98,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "libE_specs = LibeSpecs(gen_on_manager=True, nworkers=4)\n",
+    "libE_specs = LibeSpecs(nworkers=4)\n",
     "\n",
     "vocs = VOCS(\n",
     "    variables={\"x1\": [0, 1.0], \"x2\": [0, 10.0]},\n",

diff --git a/libensemble/executors/__init__.py b/libensemble/executors/__init__.py
@@ -1,4 +1,11 @@
 from libensemble.executors.executor import Executor
 from libensemble.executors.mpi_executor import MPIExecutor
 
-__all__ = ["Executor", "MPIExecutor"]
+# FluxExecutor is optional - requires flux-core Python bindings
+try:
+    from libensemble.executors.flux_executor import FluxExecutor  # noqa: F401
+
+    __all__ = ["Executor", "MPIExecutor", "FluxExecutor"]
+except ImportError:
+    # flux-core not available - FluxExecutor won't be importable
+    __all__ = ["Executor", "MPIExecutor"]