ipi

IPI is an acronym that can refer to several terms across different fields. In computing, Inter-Processor Interrupt (IPI) is a kind of hardware interrupt used by multi-core and multi-processor systems to signal another processor to take a specific action, such as updating data structures, invalidating caches, or coordinating tasks. IPIs are delivered by the processor's interrupt controller and are essential for synchronization and performance in SMP and NUMA architectures.

In economics, the Industrial Production Index (IPI) measures the real output of the industrial sector, including manufacturing, mining, and utilities, and is used as a key indicator of economic activity. It is released monthly by national statistics agencies or central banks and is often used with the Capacity Utilization report and other indicators to assess business cycles.

In bioinformatics, the International Protein Index (IPI) was a collective protein sequence database intended to provide a common reference for protein identifiers across species. It was widely used in proteomics before being merged into or superseded by UniProt, which now serves as the primary global protein resource.

Other uses exist in different domains, including industry-specific reporting or organizational names, but the above are among the most common references. When encountering the acronym, it is best to consider context to determine which IPI is meant.