From f49a7e32fc8422fc1074921b4b39a66d707e346b Mon Sep 17 00:00:00 2001
From: "Julian M. Kunkel" <juliankunkel@googlemail.com>
Date: Wed, 17 Oct 2018 13:50:04 +0100
Subject: [PATCH] Bugfix #106 mostly.

---
 src/mdtest.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/mdtest.c b/src/mdtest.c
index ff2cf29..b43e0d2 100644
--- a/src/mdtest.c
+++ b/src/mdtest.c
@@ -2336,12 +2336,11 @@ mdtest_results_t * mdtest_run(int argc, char **argv, MPI_Comm world_com, FILE *
         } else if (branch_factor == 1) {
             num_dirs_in_tree = depth + 1;
         } else {
-            num_dirs_in_tree =
-                (1 - pow(branch_factor, depth+1)) / (1 - branch_factor);
+            num_dirs_in_tree = (pow(branch_factor, depth+1) - 1) / (branch_factor - 1);
         }
     }
     if (items_per_dir > 0) {
-        if(unique_dir_per_task){
+        if(items == 0){
           items = items_per_dir * num_dirs_in_tree;
         }else{
           num_dirs_in_tree_calc = num_dirs_in_tree;