Katarzyna Keahey Patricia K. Fasel Susan M. Mniszewski PAWS: Collective Interactions and Data Transfers. 47-54 2001 conf/hpdc/2001 HPDC http://csdl.computer.org/comp/proceedings/hpdc/2001/1296/00/12960047abs.htm db/conf/hpdc/hpdc2001.html#KeaheyFM01