FM / tensorexpr

/usr/local/lib64/python3.6/site-packages/torch/include/torch/csrc/jit/tensorexpr/

/usr/local/lib64/python3.6/site-packages/torch/include/torch/csrc/jit/tensorexpr

Name	Size	Mode	Actions
operators/	-	0755	rm
analysis.h	5888	0644	edit dl rm
block_codegen.h	4211	0644	edit dl rm
bounds_inference.h	2230	0644	edit dl rm
bounds_overlap.h	3329	0644	edit dl rm
codegen.h	6402	0644	edit dl rm
cpp_codegen.h	2278	0644	edit dl rm
cpp_intrinsics.h	719	0644	edit dl rm
cuda_codegen.h	7782	0644	edit dl rm
cuda_random.h	2642	0644	edit dl rm
dim_arg.h	884	0644	edit dl rm
eval.h	9639	0644	edit dl rm
exceptions.h	3253	0644	edit dl rm
expr.h	11588	0644	edit dl rm
external_functions.h	1274	0644	edit dl rm
external_functions_registry.h	2343	0644	edit dl rm
fwd_decls.h	2806	0644	edit dl rm
graph_opt.h	2553	0644	edit dl rm
half_support.h	5038	0644	edit dl rm
hash_provider.h	7930	0644	edit dl rm
intrinsic_symbols.h	420	0644	edit dl rm
ir.h	22622	0644	edit dl rm
ir_cloner.h	2069	0644	edit dl rm
ir_mutator.h	2010	0644	edit dl rm
ir_printer.h	3693	0644	edit dl rm
ir_simplifier.h	15090	0644	edit dl rm
ir_verifier.h	1240	0644	edit dl rm
ir_visitor.h	1825	0644	edit dl rm
kernel.h	9210	0644	edit dl rm
llvm_codegen.h	3180	0644	edit dl rm
llvm_jit.h	1965	0644	edit dl rm
loopnest.h	21599	0644	edit dl rm
mem_dependency_checker.h	13003	0644	edit dl rm
reduction.h	6742	0644	edit dl rm
registerizer.h	12498	0644	edit dl rm
stmt.h	21138	0644	edit dl rm
tensor.h	7640	0644	edit dl rm
tensorexpr_init.h	268	0644	edit dl rm
types.h	3880	0644	edit dl rm
unique_name_manager.h	940	0644	edit dl rm
var_substitutor.h	1753	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/torch/include/torch/csrc/jit/tensorexpr/cuda_random.h (2642B)

#pragma once

namespace torch {
namespace jit {
namespace tensorexpr {

constexpr auto philox_random_string = R"(

class Philox {
public:
  __device__ inline Philox(unsigned long long seed,
                           unsigned long long subsequence,
                           unsigned long long offset) {
    key.x = (unsigned int)seed;
    key.y = (unsigned int)(seed >> 32);
    counter = make_uint4(0, 0, 0, 0);
    counter.z = (unsigned int)(subsequence);
    counter.w = (unsigned int)(subsequence >> 32);
    STATE = 0;
    incr_n(offset / 4);
  }

__device__ inline unsigned long operator()() {
    if(STATE == 0) {
      uint4 counter_ = counter;
      uint2 key_ = key;
      for(int i = 0; i < 9; i++) {
        counter_ = single_round(counter_, key_);
        key_.x += (kPhilox10A); key_.y += (kPhilox10B);
      }
      output = single_round(counter_, key_);
      incr();
    }
    unsigned long ret;
    switch(STATE) {
      case 0: ret = output.x; break;
      case 1: ret = output.y; break;
      case 2: ret = output.z; break;
      case 3: ret = output.w; break;
    }
    STATE = (STATE + 1) % 4;
    return ret;
  }

private:
  uint4 counter;
  uint4 output;
  uint2 key;
  unsigned int STATE;
  __device__ inline void incr_n(unsigned long long n) {
    unsigned int nlo = (unsigned int)(n);
    unsigned int nhi = (unsigned int)(n >> 32);
    counter.x += nlo;
    if (counter.x < nlo)
      nhi++;
    counter.y += nhi;
    if (nhi <= counter.y)
      return;
    if (++counter.z)
      return;
    ++counter.w;
  }
  __device__ inline void incr() {
    if (++counter.x)
      return;
    if (++counter.y)
      return;
    if (++counter.z)
      return;
    ++counter.w;
  }
  __device__ unsigned int mulhilo32(unsigned int a, unsigned int b,
                                    unsigned int *result_high) {
    *result_high = __umulhi(a, b);
    return a*b;
  }

__device__ inline uint4 single_round(uint4 ctr, uint2 key) {
    unsigned int hi0;
    unsigned int hi1;
    unsigned int lo0 = mulhilo32(kPhiloxSA, ctr.x, &hi0);
    unsigned int lo1 = mulhilo32(kPhiloxSB, ctr.z, &hi1);

uint4 ret = {hi1 ^ ctr.y ^ key.x, lo1, hi0 ^ ctr.w ^ key.y, lo0};
    return ret;
  }

static const unsigned long kPhilox10A = 0x9E3779B9;
  static const unsigned long kPhilox10B = 0xBB67AE85;
  static const unsigned long kPhiloxSA = 0xD2511F53;
  static const unsigned long kPhiloxSB = 0xCD9E8D57;
};

// Inverse of 2^32.
#define M_RAN_INVM32 2.3283064e-10f
__device__  __inline__ float Uint32ToFloat(unsigned int x) {
  return x * M_RAN_INVM32;
}

)";

} // namespace tensorexpr
} // namespace jit
} // namespace torch

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