PMPPMI

PMPPMI is not a widely recognized term within the MPI (Message Passing Interface) ecosystem. In many contexts, it may be a misreference or a typographical variation of PMPI, the profiling interface defined by MPI implementations. PMPI stands for Profiling MPI and specifies a set of functions that mirror the standard MPI_ calls, enabling external tools to intercept and record performance data without modifying user code.

If PMP PMI appears in project documentation, it may designate a project-specific extension, a composite naming choice such as “Portable MPI Profiling Interface,” or simply a nonstandard abbreviation. Without formal documentation from a particular project, there is no canonical definition for PMPPMI in the MPI standard.

In practical terms, PMPI-based profiling works by interposing a profiling layer between the application and the MPI library. Profiling libraries link early in the dynamic linker path and implement wrappers for MPI functions. When an application calls MPI_Send or MPI_Recv, control is first routed through the profiling layer, which can measure timing, bandwidth, or other metrics, and then invoke the corresponding PMPI_Send or PMPI_Receive to perform the actual communication. This approach allows tools to gather detailed performance data with minimal changes to application code.

For readers seeking to understand PMPPMI, the recommended starting point is to consult the specific project’s documentation. In the broader MPI community, PMPI remains the established standard for profiling and instrumentation. See also PMPI, MPI, and MPI profiling tools.