On Mon, Jul 13, 2015 at 08:20:35PM +0000, Sur, Sayantan wrote: > If we do punt the issue to an upper layer, such as MPI, then should we > export the fi_datatype_size() method so that apps can find out what > libfabric was compiled with? Isn't it the other way around? libfabric needs to know what the app was compiled with? Jason