Difference between revisions of "MADNESS"
| Line 60: | Line 60: | ||
|150% | |150% | ||
|- | |- | ||
| − | | -optHeaderInst and selective instrumentation | + | | -optHeaderInst and selective instrumentation (auto) |
|??? | |??? | ||
| − | | | + | |685s |
| − | | | + | |4.7% |
|} | |} | ||
Revision as of 23:40, 28 July 2009
To build MADNESS with TAU for profiling/tracing, some modifications need to be made to the code for parsing purposes. Additionally, a modification was made to fix a bug in MADNESS.
- To begin, get the source from svn:
svn co -r1177 http://m-a-d-n-e-s-s.googlecode.com/svn/local/trunk madness
- Next, patch it with the following patch:
- Build TAU with -pthread support.
- Next, make sure you have built your own blas and lapack (system installed ones will rarely work). Also, install google perftools. Configure as follow:
MPICC=tau_cc.sh MPICXX=tau_cxx.sh ../configure --prefix=$HOME/apps/madness/install-tau LIBS="-L/usr/local/packages/lapack -llapack -lblas \ -lgfortran -L/usr/local/packages/google-perftools-1.3/lib -ltcmalloc_minimal" --disable-dependency-tracking
- Build the code
make
- Run the code
export MADNESS_ROOT=$HOME/apps/madness/install-tau
export MAD_NTHREAD=7
export MRA_DATA_DIR=${MADNESS_ROOT}/share
export TAU_VERBOSE=1
export TAU_METRICS=LINUX_TIMERS
time mpiexec -n 1 ${MADNESS_ROOT}/bin/moldft
- Examine results...
Overhead of Instrumentation Methods
Of the available instrumentation options, the only viable solution we found was to use header instrumentation with a selective instrumentation file (automatically generated).
| Method | Number of Profiled Events | Runtime (seconds) | Overhead (%) |
|---|---|---|---|
| Uninstrumented | 654s | ||
| Regular Source Instrumentation | 183 | 748s | 14.4% |
| Compiler-based Instrumentation | 1321 | 19625s | 2901% |
| Source Instrumentation with headers (-optHeaderInst) | 806 | 1628s | 150% |
| -optHeaderInst and selective instrumentation (auto) | ??? | 685s | 4.7% |
