Expanded ASCII output of STF Files
Synopsis
xstftool <STF file> [stftool options]
Valid options are those that work together with
stftool --dump
, the most important ones
being:- --request: extract a subset of the data
- --matched-vtf: put information about complex events like messages and collective operations into one line
Description
The
xstftool
is a simple
wrapper around the stftool
and
the expandvtlog.pl
Perl* script
which tells the stftool
to dump
a given Structured Trace Format (STF) file in ASCII format and uses the script as
a filter to make the output more readable.It is intended to be used for doing custom analysis of trace data with scripts
that parse the output to extract information not provided by the existing tools,
or for situations where a few shell commands provide the desired information more
quickly than a graphical analysis tool.
Output
The output has the format of the ASCII Vampir* Trace Format (VTF), but entities
like function names are not represented by integer numbers that cannot be
understood without remembering their definitions, but rather inserted into each
record. The CPU numbers that encode process and thread ranks resp. groups are also
expanded.
Examples
The following examples compare the output of
stftool --dump
with the expanded output of xstftool
:- definition of a group
DEFGROUP 2147942402 "All_Processes" NMEMBS 2 2147483649 2147483650 DEFGROUP All_Processes NMEMBS 2 "Process_0" "Process_2"
- a counter sample on thread 2 of the first process
8629175798 SAMP CPU 131074 DEF 6 UINT 8 3897889661 8629175798 SAMP CPU 2:1 DEF "PERF_DATA:PAPI_TOT_INS" UINT 8 3897889661