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Poplar

README.md

Getting Started with Poplar

SDK Overview

There are two ways to run examples.

  1. IPU model (Simulator)
  2. On IPU Hardware

Setup Poplar SDK

  • Poplar SDK should be enabled by default, if its not, enable it.

    > source /software/graphcore/poplar_sdk/3.3.0/enable
> popc --version
POPLAR version 3.3.0 (de1f8de2a7)
clang version 16.0.0 (2fce0648f3c328b23a6cbc664fc0dd0630122212)

  • Go to directory with GEMV code.

    cd examples/tutorials/tutorials/poplar/tut5_matrix_vector/complete

Run with IPU Model

  • Compile tut5_complete.cpp with the provided Makefile

    make tut5

  • Run executable on the CPU.

    ./tut5 1000 100
    Sample Output 
        ./tut5 1000 100
    Multiplying matrix of size 1000x100 by vector of size 100
    Creating new graph object and compiling vertex program additions
    Constructing full compute graph and control program
    Running graph program to multiply matrix by vector
    Multiplication result OK

Run on IPU

  • Compile tut5_ipu_hardware_complete.cpp with the provided Makefile

    make tut5_ipu

  • Run executable on IPU using scheduler.

    srun --ipus=1 ./tut5_ipu 10000 1000 --device ipu
    Sample Output 
        srun --ipus=1 ./tut5_ipu 1000 100
    srun: job 26636 queued and waiting for resources
    srun: job 26636 has been allocated resources
    Multiplying matrix of size 1000x100 by vector of size 100
    Trying to attach to IPU
    Attached to IPU 0
    Creating environment (compiling vertex programs)
    Constructing compute graph and control program
    Running graph program to multiply matrix by vector
    Multiplication result OK

Next Steps

Follow Poplar Tutorial for optimized implementation of GEMV.

Useful Resources