tau_treemerge.pl — combine multiple node and or thread TAU tracefiles into a merged tracefile
tau_treemerge.pl is generated when TAU is configured with the -TRACE option.
This tool assembles a set of tau trace and event files from multiple multiple nodes or threads across a program's execution into a single unified trace file. Many TAU trace file tools operate on merged trace files.
tau_treemerge.pl will generate the specified merged trace file and an event definition file, tau.edf by default.
-n break_amount set the maximum number of trace files
to merge in each invocation of tau_merge. If we need to merge 2000 trace
files and if the maximum number of open files specified by unix is 250,
tau_treemerge.pl will incrementally merge the trace files so as not to
exceed the number of open file descriptors.