[alcf-discuss] Tau and C++ problem

[Nick Collier]

I'm trying to use tau on surveyor to gather some profile data on my  
app. When I use compiler-based instrumentation I get core dumps when I  
run the app. The app runs fine without any tau instrumentation and  
bgp_stack contains only tau related calls.

I'm not sure why its not working but perhaps tau is getting confused  
and doing ppc64 based instrumentation instead of bgp? My app is  
compiled via a makefile and these are the relevant tau options:

TAU_MAKEFILE = -tau_makefile=/soft/apps/tau/tau_latest/bgp/lib/ 
Makefile.tau-mpi-pdt
TAU_CC = /soft/apps/tau/tau_latest/bgp/bin/tau_cxx.sh
TAU_OPTIONS = -tau_options='-optCompInst -optTauInstr=/soft/apps/tau/ 
tau_latest/bgp/bin/tau_instrumentor -optVerbose'

I added -optTauInstr  options to make sure the bgp instrumentor is  
used, but I'm not sure if that actually applies as the tau options are  
bit obscure to me. I've tried to use PDT but it finds errors in the  
boost libraries I'm using and for the most part defaults to ordinary  
compilation. It does work without core dumping  though but the  
majority of the code is not actually instrumented.

Any suggestions would be appreciated.

Thanks,

Nick