Hi, On Wed, Sep 9, 2015 at 4:30 AM, Yicong Huang <hengha.mao at gmail.com> wrote: > rpython_startup_code(); > pypy_init_threads(); > pypy_setup_home(...); > pypy_execute_source_ptr("print \'hello\'"); Sorry! It seems to work if you call pypy_init_threads() after pypy_setup_home(). Armin