High Performance Conjugate Gradient Benchmark (HPCG)

This is the README is for porting HPCG to LAIK

Build laik

Clone with "git clone --recurse-submodules ..." to also clone LAIK as submodule in subdirectory "laik/". By default, this version will be linked with HPCG. First, run "configure". MPI needs to be installed and detected for HPCG to work.

    cd laik
    ./configure
    make liblaik.so

Build hpcg with laik enabled

To link HPCG with an existing LAIK installation, set variables (see ./setup/Make.Linux_LAIK, line 94) to the path you installed LAIK into (default: base directory with the compiled LAIK sources).

To build HPCG, just run

    make arch=Linux_LAIK

Run hpcg-laik

To run hpcg with LAIK enabled

    mpirun -np 2  ./bin/xhpcg

View results

hpcg will generate a result-file hpcg*.txt and a report of the benchmark HPCG-*.txt

En-/Disabling REPARTITIONING

Go to file ./src/laik/hpcg_laik.hpp and (un)comment the definition #define REPARTITION Then run

    # -n 2: two inital processes; -s 2: add two processes
    ./resize_feature/launcher/tcp2run -n 2 -s 2 ./../bin/xhpcg

For more information, see ./resize_feature/README.md