macro bugfix

test.fish

 #!/usr/bin/fish
 function t
     make TEST_DEV=$argv[1]
-    and ./gpma_bfs_demo /dataset/999999999.pokec.txt 0 | tee /dev/fd/2 2>| grep 1334630
+    and ./gpma_bfs_demo /dataset/10000.pokec.txt 0 | tee /dev/fd/2 2>| grep 8261
 
     set ret $status
     test $ret = 0 ; and echo $argv[1] OK ; or echo $argv[1] FAILED

utils.cuh

@@ -22,8 +22,9 @@ using SIZE_TYPE = uint32_t;
 namespace runtime_info {
 // some magic for template argument.
 using dev_type_t = size_t;
-constexpr dev_type_t GPU = 19990823;
-constexpr dev_type_t CPU = 19981223;
+// `#if DEV == CPU` won't work with constexpr. So I have to use macro.
+#define GPU 19990823ul
+#define CPU 19981223ul
 
 template <dev_type_t dev_type, typename value_type>
 struct native_vector;