{
    "embedding_serialization_factor": 5,
    "recompute_checkpoint_every_layer": true,                                                                                    
    "optimizer_state_offchip": true,
    "replicated_tensor_sharding": true,
    "enable_half_first_order_momentum": true,                                                                                    
    "enable_half_partials": true,                                                                                                
  
    "device_iterations": 1,                                                                                                      
    "inference_device_iterations": 6,
    "replication_factor": {"pod4": 1, "pod8": 2, "pod16": 4, "pod32": 8, "pod64": 16, "default": 1},
    "inference_replication_factor": {"pod4": 1, "pod8": 2, "pod16": 4, "pod32": 8, "pod64": 16, "default": 1},
    "gradient_accumulation_steps": 512,
    "executable_cache_dir": "./exe_cache",
  
    "ipus_per_replica": 4,
    "layers_per_ipu": [0, 4, 4, 4],
    "matmul_proportion": [0.25, 0.25, 0.25, 0.25]
}