> I also tried reducing the size of HYD_TMPBUF_SIZE from 64 KB to 1 KB. > Since the total output is ~30 KB, I wondered if it waited until it was > full (or EOF). The smaller buffer did not change anything either. I'll rename HYD_TMPBUF_SIZE to HYD_STDIN_TMPBUF_SIZE for clarity. -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji