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Tests

Tests for FlagCX are maintained in test/perf.

cd test/perf
make [USE_NVIDIA | USE_ILUVATAR_COREX | USE_CAMBRICON | USE_METAX | USE_MUSA | USE_KUNLUNXIN | USE_DU | USE_ASCEND | USE_TSM]=1
mpirun --allow-run-as-root -np 8 ./test_allreduce -b 128K -e 4G -f 2

Note that the default MPI install path is set to /usr/local/mpi, you may specify the MPI path with:

make MPI_HOME=<MPI path>

All tests support the same set of arguments:

  • Sizes to scan

    • -b <min> minimum size in bytes to start with. Default: 1M.
    • -e <max> maximum size in bytes to end at. Default: 1G.
    • -f <increment factor> multiplication factor between sizes. Default: 2.

  • Performance

    • -w, <warmup iterations > number of warmup iterations (not timed). Default: 5.
    • -n, <iterations > number of iterations. Default: 20.

  • Test operation

    • -R, <0/1> enable local buffer registration on send/recv buffers. Default: 0.
    • -s, <OCT/DEC/HEX> specify MPI communication split mode. Default: 0

  • Utils

    • -p, <0/1> print buffer info. Default: 0.
    • -h print help message. Default: disabled.