Merge pull request #129 from shintaro-iwasaki/HugePageWorkaround

Disable hugepage allocation by default on non-x86/64.

src/arch/abtd_env.c

@@ -201,7 +201,22 @@ void ABTD_env_init(ABTI_global *p_global)
  env = getenv("ABT_MEM_LP_ALLOC");
  if (env == NULL) env = getenv("ABT_ENV_MEM_LP_ALLOC");
 #if defined(HAVE_MAP_ANONYMOUS) || defined(HAVE_MAP_ANON)
+#if defined(__x86_64__)
  int lp_alloc = ABTI_MEM_LP_MMAP_HP_RP;
+#else
+ /*
+ * If hugepage is used, mmap() needs a correct size of hugepage; otherwise,
+ * error happens on munmap(). However, the default size is for typical
+ * x86/64 machines, not for other architectures, so the error happens when
+ * the hugepage size is different. To run Argobots with default settings
+ * on these architectures, we disable hugepage allocation by default on
+ * non-x86/64 architectures; on such a machine, hugepage settings should
+ * be explicitly enabled via an environmental variable.
+ *
+ * TODO: fix this issue by detecting and setting a correct hugepage size.
+ */
+ int lp_alloc = ABTI_MEM_LP_MALLOC;
+#endif
 #else
  int lp_alloc = ABTI_MEM_LP_MALLOC;
 #endif