From 24b9ff8c9efb2fdeb4182d22b735c70e74af3060 Mon Sep 17 00:00:00 2001
From: Edgar Solomonik <solomon2@illinois.edu>
Date: Thu, 9 Nov 2023 15:13:49 -0600
Subject: [PATCH] correct code for cases when number of processors is less than
 CTF_PPN

---
 src/contraction/contraction.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/contraction/contraction.cxx b/src/contraction/contraction.cxx
index 865a4f95..cd162eb9 100644
--- a/src/contraction/contraction.cxx
+++ b/src/contraction/contraction.cxx
@@ -4441,7 +4441,7 @@ namespace CTF_int {
     if (C->wrld->ppn != 1 && !is_sparse()){
       TAU_FSTART(node_aware_remapping_calc);
       std::vector<int> pe_grid(orig_topo.lens, orig_topo.lens + orig_topo.order);
-      std::vector<std::vector<int> > inter_node_grids = CTF_int::get_inter_node_grids(pe_grid, C->wrld->np/C->wrld->ppn);
+      std::vector<std::vector<int> > inter_node_grids = CTF_int::get_inter_node_grids(pe_grid, std::max(1,C->wrld->np/C->wrld->ppn));
       //std::vector< std::vector<int> > intra_node_grids = CTF_int::get_all_shapes(C->wrld->ppn()){
       int * intra_node_lens = (int*)CTF_int::alloc((orig_topo.order)*sizeof(int));
       int64_t best_topo_index;