The answer below was provided by the GSC systems team:
The avx2 architecture is a set of new chip instructions released as a part of the intel chipset known as “haswell”. Many of these instructions involve extensions to the floating point instruction set. These instructions are potentially used by the gcc or Intel or other compiler that the bioinformatician uses to build code or may be employed by software that the bioinformatician licenses for use. Unless coding in assembler, a bioinformatician is unlikely to directly use these extensions to the instruction set.
Further details can be found at this link: https://en.wikipedia.org/wiki/Advanced_Vector_Extensions