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Welcome to the Grid wiki!

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UDEL Hackathon

• Running on Metis

• How to build Grid

git clone https://github.com/chulwoo1/Grid  
cd Grid  
aclocal  
autoheader  
automake -f --add-missing  
autoconf  
cd ..  
mkdir build  
cd build  
../Grid/configure CXX=pgc++ \
CXXFLAGS="-DBOOST_RANLUX -I$BOOST_ROOT/include --c++11 -w -O3 -Mnounroll" \
LDFLAGS="-L$BOOST_ROOT/lib -lboost_random -lboost_system" \
--enable-precision=single --enable-simd=DEBUG  
make

• To build with OpenACC pragmas

../Grid/configure CXX=pgc++ \
CXXFLAGS="-acc -Minfo=accel -DBOOST_RANLUX -I$BOOST_ROOT/include --c++11 -O3 -Mnounroll" \
LDFLAGS="-L$BOOST_ROOT/lib -lboost_random -lboost_system" \
--enable-precision=single --enable-simd=DEBUG  

**Alternative for generating Grid configure

automake --add-missing
autoreconf -f

• How to generate a call graph with gprof and gprof2dot
  1. compile and link the library and main program with an additional -pg option
  2. run the program as usual. A file gmon.out will be written
  3. parse the file using “gprof” to see the call graphs
  4. gprof -p > flat.out will generate the flat call graph output
  5. visualize the call graph with a python script gprof2dot: gprof | gprof2dot > call-graph.dot
  6. convert the dot file into different formats: dot -Tpdf call-graph.dot > call-graph.pdf

Single node CPU Benchmarking

• Ivy bridge
• Haswell
• KNC
• KNL if someone gets me access!

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Thread Scaling

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MPI scaling

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Some compiler comparisons

• clang++
• clang-omp++
• icpc
• icpc -fopenmp

NOTIFICATIONS:

PGI_ACC_NOTIFY=3 ./Test_cayley_even_odd 2>&1 | tee run