compiling problem when using cxperf

[wangshan_1]

hi,
has anyone used the tool "cxperf"? I used it
as in the doc:
"c89 main.c /opt/cxperf/lib/cxperfmon.ia64.a -Wl, -u, __cxperfStubs +DD64"
but failed with message:
"__cxperfStubs": No such file or directory
fatal error
could anyone help?
-Wangshan

[Olav Baadsvik]

I have not seen the doc you mention, but
the syntax you have seems to be wrong.

Giving the option -Wl to the compiler says
that you want to pass options to the linker.
In this case -u
According to the man-page for ld -u, xxx
is not the correct syntax.
Try -u xxx
where xxx is the name of the symbol you
want to "undefine"

Olav

[Steve Steel]

Hi

Going on the statement further in the document

In the example above, bsort.c is linked with the MPI library and the
CXperf runtime components. The symbol _cxperfStubs is presented to
the linker as undefined. The symbol, _cxperfStubs, links the CXperf
runtime entry points. The resulting file is bsort.ia64.

Olav appears to be correct

It is certainly worth trying.


Steve Steel

[wangshan_1]

Thanks, Olav & Steve,
Now the compiling is ok. But the cxperf running still has issues:

# c89 main.c /opt/cxperf/lib/cxperfmon.ia64.a
-u __cxperfStubs +DD64
# cxperf a.out
(CXperf) select all
(CXperf) collect cpu
(CXperf) run
ERROR : 9001 : Exec of a.out process fails, aborting ...
ERROR : 9001 : CXperf RTC::errexit: entry - _synthPid = 23547
exec: Permission denied
(CXperf)

the main.c is very simple:
main(){
printf("hello\n");
}

-Wangshan

[Steve Steel · Accepted solution]

Hi
You probably need to be root and are not. You have no execute permission

Look at

export ST_CXPERF_RTC=/opt/cxperf/lbin/rtc.ia64

Can your user access this

Or Try like this

The example below displays a sample wrapper script.
#!/bin/sh
PATH=$PATH:/opt/cxperf/bin
export ST_CXPERF_RTC=/opt/cxperf/lbin/rtc.ia64
export ST_CXPERF_SYNTH=/opt/cxperf/lbin/synth.ia64
/opt/cxperf/bin/cxperf.ia64 ./bsort.ia64 <select routine all
collect cpu wall_clock events
set events EXECUTION_1
set pdf bsort.$$.cxp
run
quit
EOF
In the example above, the MPI application bsort.ia64 is run by
CXperf.
If CXperf is installed at the standard location /opt/cxperf, the
exported shell variables in the example are not necessary.
When possible, use a script file. When using a script file, the CXperf
invocation appears as followed:
/opt/cxperf/bin/cxperf.ia64 ./bsort.ia64 -x cxperf
-ScriptName
The file cxperfScriptName contains the content below:
(CXperf) select routine all
(CXperf) collect cpu wall_clock events
(CXperf) set events EXECUTION_1
(CXperf) set pdf bsort.$$
(CXperf) run
(CXperf) quit


Steve Steel

[wangshan_1]

your suggestions are very helpful, thanks, Steve!
I found that in stead of using "cxperf a.out"
, "cxperf ./a.out" will work.
-Wangshan