IntelĀ® Trace Collector 9.1 Update 2 User and Reference Guide
LOGFILE-NAME <file name>
VT_LOGFILE_NAME
Specifies the name for the tracefile containing all the trace data. Can be an absolute or relative pathname; in the latter case, it is interpreted relative to the log prefix (if set) or the current working directory of the process writing it.
If unspecified, then the name is the name of the program plus .avt for ASCII, .stf for STF and .single.stf for single STF tracefiles. If one of these suffices is used, then they also determine the logfile format, unless the format is specified explicitly.
In the stftool the name has to be specified explicitly, either by using this option or as argument of the --convert or --move switch.