Intel Introduces PISA Virtual ISA for Greater GPU Software Portability

Intel updated its Compute Runtime with support for Portable Instruction Set Architecture (PISA), a new virtual ISA and programming model for Intel GPUs. PISA adds an abstraction layer between compiler output and native GPU machine code, letting a workload be compiled once and finalized for multiple compatible Intel GPU architectures.

• PISA is a virtual ISA abstracting compilers from native GPU machine code
• One PISA build can be finalized for multiple Intel GPU architectures
• Compatibility depends on the target architecture and instructions used
• PISA complements Intel's existing vISA in its GPU compiler stack