Here are some pointers to info about SP-2 and HPF

An outline of SP2 product information by IBM

http://ibm.tc.cornell.edu/ibm/pps/sp2/index.html

SP-2 Hardware Overview by Mitch Murphy

http://www.umiacs.umd.edu/staff/mitch/training/workshop/html/ibmhwsw/ibmhwsw.html

The SP2 Communication System by IBM

http://ibm.tc.cornell.edu/ibm/pps/doc/css/css.html

SP System Software by Maui HPCC

http://www.mhpcc.edu/training/workshop/html/ibmhwsw/ibmhwsw.html#syssw

xHPF NAS benchmark results

ftp://ftp.netcom.com/pub/forge/home.html

Language Specification of HPF

http://www.erc.msstate.edu/hpff/home.html

APR- Fortran Products including the xHPF compiler

ftp://ftp.netcom.com/pub/forge/home.html