if(request->flags & PREPARED)request->flags &= ~PREPARED;
if(request->flags & RECV) {
print_request("New recv", request);
+ //FIXME: if receive is posted with a large size, but send is smaller, mailboxes may not match !
if (request->size < sg_cfg_get_int("smpi/async_small_thres"))
mailbox = smpi_process_mailbox_small();
else