Add utility error when using MPI with non-MPI partitioning

juntyr · Jun 2, 2024 · 43bd5ca · 43bd5ca
1 parent be9612c
commit 43bd5ca
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/rustcoalescence/src/cli/simulate/parse/partitioning.rs b/rustcoalescence/src/cli/simulate/parse/partitioning.rs
@@ -12,6 +12,16 @@ pub(in super::super) fn parse_and_normalise(
 
     normalised_args.partitioning(&partitioning);
 
+    #[cfg(feature = "mpi-partitioning")]
+    if !matches!(&partitioning, Partitioning::Mpi(_)) {
+        match necsim_partitioning_mpi::MpiPartitioning::initialise() {
+            Ok(_) | Err(necsim_partitioning_mpi::MpiPartitioningError::AlreadyInitialised) => {
+                anyhow::bail!("MPI should not be used together with a non-MPI partitioning")
+            },
+            Err(necsim_partitioning_mpi::MpiPartitioningError::NoParallelism) => (),
+        }
+    }
+
     Ok(partitioning)
 }