ipu_config.json

{
    "recompute_checkpoint_every_layer": true,
    "optimizer_state_offchip": true,
    "replicated_tensor_sharding": true,
    "enable_half_partials": true,

    "replication_factor": 1,
    "gradient_accumulation_steps": 512,
    "device_iterations": 1,
    "executable_cache_dir": "./exe_cache",

    "inference_device_iterations": 4,
    "inference_replication_factor": 1,
    "ipus_per_replica": 4,
    "layers_per_ipu": [0, 4, 4, 4],
    "matmul_proportion": [0.25, 0.25, 0.25, 0.25]
  }