From 6aa768c7c840fa326596a3b40a0954a9f475ed63 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Wed, 31 May 2023 01:30:26 -0400
Subject: new tabulator running look

---
 tabulator-mpi/main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'tabulator-mpi/main.cpp')

diff --git a/tabulator-mpi/main.cpp b/tabulator-mpi/main.cpp
index 959cd8c..cb60ecb 100644
--- a/tabulator-mpi/main.cpp
+++ b/tabulator-mpi/main.cpp
@@ -33,6 +33,11 @@ int main(int argc, char **argv) {
   MPI_Comm_rank(MPI_COMM_WORLD, &comm_rank);
   MPI_Comm_size(MPI_COMM_WORLD, &comm_size);
 
+  if (comm_size < 2) {
+    fprintf(stderr, "at least two processes are required\n");
+    return 1;
+  }
+
   const lib94::warrior **warriors = new const lib94::warrior *[argc - 1];
   for (int i = 0; i < argc - 1; ++i)
     warriors[i] = load_warrior(argv[i + 1]);
-- 
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