diff --git a/makefile b/makefile
index 7da1153..939f35a 100644
--- a/makefile
+++ b/makefile
@@ -1,6 +1,9 @@
 debug: test.cpp magyarsort.h
 	g++ test.cpp -g -std=c++17 -o test.out
 
+debug_ypsu: ypsu.cpp magyarsort.h
+	g++ ypsu.cpp -g -std=c++17 -o ypsu.out
+
 release_coz: test.cpp magyarsort.h
 	g++ test.cpp -DNDEBUG -g1 -gdwarf-2 -std=c++17 -O2 -ldl -o test.out
 
@@ -13,6 +16,12 @@ release: test.cpp magyarsort.h
 release_ypsu: ypsu.cpp magyarsort.h
 	g++ ypsu.cpp -DNDEBUG -std=c++17 -O2 -o ypsu.out
 
+release_ypsu_assert: ypsu.cpp magyarsort.h
+	g++ ypsu.cpp -std=c++17 -O2 -o ypsu.out
+
+release_ypsu_debug_sym: ypsu.cpp magyarsort.h
+	g++ ypsu.cpp -g -std=c++17 -O2 -o ypsu.out
+
 release3: test.cpp magyarsort.h
 	g++ test.cpp -DNDEBUG -std=c++17 -O3 -o test.out
 
diff --git a/ypsu.cpp b/ypsu.cpp
index e832f0f..1b39d96 100644
--- a/ypsu.cpp
+++ b/ypsu.cpp
@@ -18,6 +18,8 @@
   #define MAGYAR_SORT_DEFAULT_REUSE
   #include "magyarsort.h"
 
+  #include "space_partitioning_sort/spsort.h"
+
   std::map<std::string, double> results;
   std::map<std::string, double> worst;
   void measure(const std::string &inputtype, const std::string &name,
@@ -391,8 +393,9 @@
   }
 
   int main(void) {
-    int n = 100000000;
+    //int n = 100000000;
     //int n = 10000000;
+    int n = 100;
     for (auto inputtype : inputtypes) {
       printf("%10s", inputtype.c_str());
       fflush(stdout);
@@ -433,10 +436,13 @@
       measure(inputtype, "4rot", [&] { fourrots(&w[0], w.size()); });
       assert(w == expected);
       w = v;
-      measure(inputtype, "frewr", [&] { frewr(&w[0], w.size()); });
+      measure(inputtype, "sp", [&] { spsort(&w[0], w.size()); });
       assert(w == expected);
       /*
       w = v;
+      measure(inputtype, "frewr", [&] { frewr(&w[0], w.size()); });
+      assert(w == expected);
+      w = v;
       measure(inputtype, "vsort", [&] { vsort(&w[0], w.size()); });
       assert(w == expected);
       */