Re:Why I will be using RISC-V in my next chip
by userbinator on Saturday January 09, 2016 @10:37PM
(#10874032)
VLIW demands an even "mix" of instruction types, and that's largely incompatible with general-purpose application code.
The Itanium is a great example of this. Benchmarks that pushed the CPU to its limits looked amazing, but real-world performance with general-purpose code was awful. There just isn't enough parallelism in general-purpose code to justify extremely huge instruction bundles that will mostly be wasted with NOPs.
The Itanium is a great example of this. Benchmarks that pushed the CPU to its limits looked amazing, but real-world performance with general-purpose code was awful. There just isn't enough parallelism in general-purpose code to justify extremely huge instruction bundles that will mostly be wasted with NOPs.