Thomas Pornin writes: > So the G3 from a decade ago does about 2.5x more things per cycle than > the PowerPC core in the Cell processor. I find this decidedly fishy.
Welcome to reality! Actually, the PPU on the Cell is capable of more 32-bit operations per cycle than the G3, _if_ you use it sensibly. (It also has two threads, and of course a much higher clock speed.) You might find the manual helpful: https://www.ibm.com/chips/techlib/techlib.nsf/techdocs/7A77CCDF14FE70D5852575CA0074E8ED?Open Appendix A explains the performance of the PPU. Appendix B explains the performance of the 6 (or 7 or 8) SPUs---I understand that you aren't asking about the SPUs, but nobody would buy a Cell without the SPUs; the PPU by itself is rather mediocre as a CPU. ---D. J. Bernstein Research Professor, Computer Science, University of Illinois at Chicago _______________________________________________ Gcc-cfarm-users mailing list Gcc-cfarm-users@gna.org https://mail.gna.org/listinfo/gcc-cfarm-users
