4 ms·

VLIW has ultimately failed several times outside of IA-64. It was briefly tried for GPUs too.

• nipxx 7y ago
  It's alive and kicking on the Texas Instruments DSP chips. You can get incredible performance out of them, but you pay with horrible compile times. To give you a taste what these chips do: - 64 registers, 8 execution units, so 8 instruction can execute per cycle. Each instruction executes in a single cycle but may writes back the result later (multiplications do this for example). It's your responsibility to make sure you don't generate a conflict. - for loops the hardware has a very complicated hardware scheduling mechanism that effectively lets you split the instruction pointer into 8 different pointers, so you can run multiple instances of a loop at the same time. I wrote assembler code for that. Sudoku is a piece of cake compared to it.
  • tenebrisalietum 7y ago
    I'm feeling extremely masochistic. What's the model number of one of these chips and/or a pointer to its instruction set reference?
    • nipxx 7y ago
      For me it was the TMS320C64x+ There are newer versions of that chip out there with floating point support. The glory instruction set reference is here: https://www.ti.com/lit/ug/spru732j/spru732j.pdf https://www.ti.com/lit/ug/spru732j/spru732j.pdf