IpuLinkConfiguration.hpp

// Copyright (c) 2020 Graphcore Ltd. All rights reserved.
 
#ifndef poplar_IpuLinkConfiguration_hpp
#define poplar_IpuLinkConfiguration_hpp
 
#include <iostream>
 
namespace poplar {
enum class IpuLinkConfiguration {
  Default,       // Fully connects up to 16 IPUs in a ladder.
  SlidingWindow, // Connects IPUs so that they can only communicate with a
                 // number of neighbours above and below.
  BarleyTwist,   // Same as Sliding window with the addition of the IPUs forming
                 // a ring.
};
 
std::ostream &operator<<(std::ostream &os, IpuLinkConfiguration ic);
 
} // end namespace poplar
 
#endif // poplar_IpuLinkConfiguration_hpp