Berkeley Unified Parallel C

Unified Parallel C or UPC is an extension of the renowned C programming language developed specifically for high-performance computing across massive-scale parallel machines. This language offers a consistent programming model for both shared and distributed memory hardware. What sets UPC apart is that it provides a unified address space where variables, while physically associated with a single processor, can be read and written directly by any processor.

The Single Program Multiple Data or SPMD model of computation that UPC uses is fixed at program startup time and generally consists of a single thread of execution for each processor. Consequently, programmers can benefit from greater efficiency and performance, especially in the contexts of large-scale parallel computing. UPC is, therefore, a valuable tool for developers who require a dependable and efficient language for high-performance concurrent programming.