[BUG] Enforce renumbering for MNMG algos

benchmarks/python_e2e/main.py

@@ -130,6 +130,7 @@ def run(algos,
         success = benchmark.run()
 
         algo_name = benchmark.results[1].name
+        algo_name = f"benchmarks.{algo_name}"
         algo_time = benchmark.results[1].runtime
         # Generate json files containing the benchmark results
         if benchmark_dir is not None:

python/cugraph/cugraph/structure/graph_classes.py

@@ -238,6 +238,8 @@ def from_dask_cudf_edgelist(
             If source and destination indices are not in range 0 to V where V
             is number of vertices, renumber argument should be True.
         """
+        if renumber is False:
+            raise ValueError("'renumber' must be set to 'True' for MNMG algos")
         if self._Impl is None:
             self._Impl = simpleDistributedGraphImpl(self.graph_properties)
         elif type(self._Impl) is not simpleDistributedGraphImpl:

python/cugraph/cugraph/tests/dask/test_mg_renumber.py

@@ -176,3 +176,51 @@ def test_dask_pagerank(dask_client):
             err = err + 1
     print("Mismatches:", err)
     assert err == 0
+
+
+@pytest.mark.skipif(
+    is_single_gpu(), reason="skipping MG testing on Single GPU system"
+)
+@pytest.mark.parametrize("renumber", [False])
+def test_digraph_renumber_false(renumber, dask_client):
+    gc.collect()
+
+    input_data_path = (RAPIDS_DATASET_ROOT_DIR_PATH /
+                       "karate.csv").as_posix()
+    chunksize = dcg.get_chunksize(input_data_path)
+
+    ddf = dask_cudf.read_csv(
+        input_data_path,
+        chunksize=chunksize,
+        delimiter=" ",
+        names=["src", "dst", "value"],
+        dtype=["int32", "int32", "float32"],
+    )
+    dg = cugraph.DiGraph()
+
+    with pytest.raises(ValueError):
+        dg.from_dask_cudf_edgelist(ddf, "src", "dst", renumber=renumber)
+
+
+@pytest.mark.skipif(
+    is_single_gpu(), reason="skipping MG testing on Single GPU system"
+)
+@pytest.mark.parametrize("renumber", [False])
+def test_multi_digraph_renumber_false(renumber, dask_client):
+    gc.collect()
+
+    input_data_path = (RAPIDS_DATASET_ROOT_DIR_PATH /
+                       "karate_multi_edge.csv").as_posix()
+    chunksize = dcg.get_chunksize(input_data_path)
+
+    ddf = dask_cudf.read_csv(
+        input_data_path,
+        chunksize=chunksize,
+        delimiter=" ",
+        names=["src", "dst", "value"],
+        dtype=["int32", "int32", "float32"],
+    )
+    dg = cugraph.MultiDiGraph()
+
+    with pytest.raises(ValueError):
+        dg.from_dask_cudf_edgelist(ddf, "src", "dst", renumber=renumber)