open_ckpt_to_write_hbict  256 ckptserializer.cpp         fd = open_ckpt_to_write_hbict(fd, pipe_fds, hbict_path, gzip_path);
open_ckpt_to_write_hbict  258 ckptserializer.cpp         fd = open_ckpt_to_write_hbict(fd, pipe_fds, hbict_path, NULL);