IntelĀ® Trace Collector 9.1 Update 2 User and Reference Guide
STF-PROCS-PER-FILE <number of processes>
VT_STF_PROCS_PER_FILE
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In addition to or instead of combining trace data per node, the number of processes per file can be limited. This helps to restrict the amount of data that has to be loaded when analyzing a sub-set of the processes.
If STF-USE-HW-STRUCTURE is enabled, then STF-PROCS-PER-FILE has no effect unless it is set to a value smaller than the number of processes running on a node. To get files that contain exactly the data of <n> processes, set STF-USE-HW-STRUCTURE to OFF and STF-PROCS-PER-FILE to <n>.
In a single-process multi-threaded application trace, this configuration option is used to determine the number of threads per file.