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Again, one can't help but feel that a hypothetical 16-core Magny-Cours would have been a better option. I think that this quote demonstrates exactly the reas
by saulrh 15y ago
Again, one can't help but feel that a hypothetical 16-core
Magny-Cours would have been a better option.
I think that this quote demonstrates exactly the reason that AMD went forward with their catastrophe - current architectures can't get much more parallel. AMD is betting (heavily) that Intel's architecture will max out in the near future while AMD keeps improving Bulldozer. Should be interesting.
- wmf 15y agoI don't see evidence of this. Intel has moved to a more scalable ring bus while AMD is still using a crossbar (although the Bulldozer module design should allow each pair of cores to share a crossbar port).
- zdw 15y agoThe HyperTransport (HT) crossbar offered more options, although people didn't tend to use it like that. I can only think of a handful of examples (the Sun X4500/X4540 for example) that took full advantage of the expanded I/O functionality it offered, and there were even a few FPGA solutions that could have been used to create really innovative custom logic designs. The problem was that, outside of totally custom solutions like the above, it didn't offer enough of a benefit to AMD, especially once Intel jumped on the memory directly attached to CPU bandwagon.