for (i = 0; mpi_coll_##cat##_description[i].name; i++){\
if(!strcmp(mpi_coll_##cat##_description[i].name, "automatic"))continue;\
if(!strcmp(mpi_coll_##cat##_description[i].name, "default"))continue;\
for (i = 0; mpi_coll_##cat##_description[i].name; i++){\
if(!strcmp(mpi_coll_##cat##_description[i].name, "automatic"))continue;\
if(!strcmp(mpi_coll_##cat##_description[i].name, "default"))continue;\