cuda_ipc_memory.h

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#ifndef TVM_RUNTIME_DISCO_CUDA_IPC_MEMORY_H_
#define TVM_RUNTIME_DISCO_CUDA_IPC_MEMORY_H_
 
#include <tvm/runtime/c_runtime_api.h>
#include <tvm/runtime/memory/memory_manager.h>
#include <tvm/runtime/object.h>
 
#include <vector>
 
namespace tvm {
namespace runtime {
namespace cuda_ipc {
 
class CUDAIPCMemoryObj : public Object {
 public:
  int num_workers;
  int worker_id;
  std::vector<void*> remote_data;
 
  // We introduce the barrier helper data below per CUDAIPCMemory object
  // so that they can be used by custom collective operations and allow
  // fine-grained synchronization on each buffer. These barriers have
  // low overhead, and can potentially enable concurrent execution of
  // kernels in future.
  std::vector<void*> barrier_in;
  std::vector<void*> barrier_out;
  int barrier_flag;
 
  static constexpr const char* _type_key = "tvm.runtime.disco.cuda_ipc_memory";
  static constexpr const bool _type_has_method_sequal_reduce = false;
  static constexpr const bool _type_has_method_shash_reduce = false;
  TVM_DECLARE_BASE_OBJECT_INFO(CUDAIPCMemoryObj, Object);
};
 
class CUDAIPCMemory : public ObjectRef {
 public:
  TVM_DLL static memory::Allocator* GlobalAllocator();
  TVM_DLL static CUDAIPCMemory GetIPCMemoryFromDevicePtr(void* ptr);
 
  TVM_DEFINE_MUTABLE_OBJECT_REF_METHODS(CUDAIPCMemory, ObjectRef, CUDAIPCMemoryObj);
};
 
}  // namespace cuda_ipc
}  // namespace runtime
}  // namespace tvm
 
#endif  // TVM_RUNTIME_DISCO_CUDA_IPC_MEMORY_H_