The claims to devices (a multiprocessor) can be infringed by making selling offering for sale importing or using such a piece of hardware. The closets you could get to infringing would be using one. If you were using an infringing device made by AMD it is AMD who would be trouble for making, selling etc.
On the face of it a program might do the steps specified in the method claims but multiplying floating four point numbers has been done for decades so assertions made during the prosecution of the patent must have implicitly narrowed the meaning of the steps to not apply to the prior art,
Separate from your question I will point out that the “each core” wording is horribly limiting. In a claim, case law says each means every. Adding a fixed point core to a multi core chip will sidestep those claims.
I am a retired patent agent and a co-inventor of a multiprocessor patent.