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tools/cub-1.8.0/test/test_iterator.cu 25 KB
8dcb6dfcb   Yannick Estève   first commit
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  /******************************************************************************
   * Copyright (c) 2011, Duane Merrill.  All rights reserved.
   * Copyright (c) 2011-2018, NVIDIA CORPORATION.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in the
   *       documentation and/or other materials provided with the distribution.
   *     * Neither the name of the NVIDIA CORPORATION nor the
   *       names of its contributors may be used to endorse or promote products
   *       derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************/
  
  /******************************************************************************
   * Test of iterator utilities
   ******************************************************************************/
  
  // Ensure printing of CUDA runtime errors to console
  #define CUB_STDERR
  
  #include <iterator>
  #include <stdio.h>
  #include <typeinfo>
  
  #include <cub/iterator/arg_index_input_iterator.cuh>
  #include <cub/iterator/cache_modified_input_iterator.cuh>
  #include <cub/iterator/cache_modified_output_iterator.cuh>
  #include <cub/iterator/constant_input_iterator.cuh>
  #include <cub/iterator/counting_input_iterator.cuh>
  #include <cub/iterator/tex_obj_input_iterator.cuh>
  #include <cub/iterator/tex_ref_input_iterator.cuh>
  #include <cub/iterator/transform_input_iterator.cuh>
  
  #include <cub/util_type.cuh>
  #include <cub/util_allocator.cuh>
  
  #include "test_util.h"
  
  #include <thrust/device_ptr.h>
  #include <thrust/copy.h>
  
  using namespace cub;
  
  
  //---------------------------------------------------------------------
  // Globals, constants and typedefs
  //---------------------------------------------------------------------
  
  bool                    g_verbose = false;
  CachingDeviceAllocator  g_allocator(true);
  
  // Dispatch types
  enum Backend
  {
      CUB,        // CUB method
      THRUST,     // Thrust method
      CDP,        // GPU-based (dynamic parallelism) dispatch to CUB method
  };
  
  
  template <typename T>
  struct TransformOp
  {
      // Increment transform
      __host__ __device__ __forceinline__ T operator()(T input) const
      {
          T addend;
          InitValue(INTEGER_SEED, addend, 1);
          return input + addend;
      }
  };
  
  struct SelectOp
  {
      template <typename T>
      __host__ __device__ __forceinline__ bool operator()(T input)
      {
          return true;
      }
  };
  
  
  //---------------------------------------------------------------------
  // Test kernels
  //---------------------------------------------------------------------
  
  /**
   * Test random access input iterator
   */
  template <
      typename InputIteratorT,
      typename T>
  __global__ void Kernel(
      InputIteratorT    d_in,
      T                 *d_out,
      InputIteratorT    *d_itrs)
  {
      d_out[0] = *d_in;               // Value at offset 0
      d_out[1] = d_in[100];           // Value at offset 100
      d_out[2] = *(d_in + 1000);      // Value at offset 1000
      d_out[3] = *(d_in + 10000);     // Value at offset 10000
  
      d_in++;
      d_out[4] = d_in[0];             // Value at offset 1
  
      d_in += 20;
      d_out[5] = d_in[0];             // Value at offset 21
      d_itrs[0] = d_in;               // Iterator at offset 21
  
      d_in -= 10;
      d_out[6] = d_in[0];             // Value at offset 11;
  
      d_in -= 11;
      d_out[7] = d_in[0];             // Value at offset 0
      d_itrs[1] = d_in;               // Iterator at offset 0
  }
  
  
  
  //---------------------------------------------------------------------
  // Host testing subroutines
  //---------------------------------------------------------------------
  
  
  /**
   * Run iterator test on device
   */
  template <
      typename        InputIteratorT,
      typename        T,
      int             TEST_VALUES>
  void Test(
      InputIteratorT  d_in,
      T               (&h_reference)[TEST_VALUES])
  {
      // Allocate device arrays
      T                 *d_out    = NULL;
      InputIteratorT    *d_itrs   = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_out,     sizeof(T) * TEST_VALUES));
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_itrs,    sizeof(InputIteratorT) * 2));
  
      int compare;
  
      // Run unguarded kernel
      Kernel<<<1, 1>>>(d_in, d_out, d_itrs);
  
      CubDebugExit(cudaPeekAtLastError());
      CubDebugExit(cudaDeviceSynchronize());
  
      // Check results
      compare = CompareDeviceResults(h_reference, d_out, TEST_VALUES, g_verbose, g_verbose);
      printf("\tValues: %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Check iterator at offset 21
      InputIteratorT h_itr = d_in + 21;
      compare = CompareDeviceResults(&h_itr, d_itrs, 1, g_verbose, g_verbose);
      printf("\tIterators: %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Check iterator at offset 0
      compare = CompareDeviceResults(&d_in, d_itrs + 1, 1, g_verbose, g_verbose);
      printf("\tIterators: %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Cleanup
      if (d_out) CubDebugExit(g_allocator.DeviceFree(d_out));
      if (d_itrs) CubDebugExit(g_allocator.DeviceFree(d_itrs));
  }
  
  
  /**
   * Test constant iterator
   */
  template <typename T>
  void TestConstant(T base)
  {
      printf("
  Testing constant iterator on type %s (base: %lld)
  ", typeid(T).name(), (unsigned long long) (base)); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      T h_reference[8] = {base, base, base, base, base, base, base, base};
      ConstantInputIterator<T> d_itr(base);
      Test(d_itr, h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      int copy_items  = 100;
      T   *h_copy     = new T[copy_items];
      T   *d_copy     = NULL;
  
      for (int i = 0; i < copy_items; ++i)
          h_copy[i] = d_itr[i];
  
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * copy_items));
      thrust::device_ptr<T> d_copy_wrapper(d_copy);
  
      thrust::copy_if(d_itr, d_itr + copy_items, d_copy_wrapper, SelectOp());
  
      int compare = CompareDeviceResults(h_copy, d_copy, copy_items, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      if (h_copy) delete[] h_copy;
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif // THRUST_VERSION
  }
  
  
  /**
   * Test counting iterator
   */
  template <typename T>
  void TestCounting(T base)
  {
      printf("
  Testing counting iterator on type %s (base: %d) 
  ", typeid(T).name(), int(base)); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      // Initialize reference data
      T h_reference[8];
      h_reference[0] = base + 0;          // Value at offset 0
      h_reference[1] = base + 100;        // Value at offset 100
      h_reference[2] = base + 1000;       // Value at offset 1000
      h_reference[3] = base + 10000;      // Value at offset 10000
      h_reference[4] = base + 1;          // Value at offset 1
      h_reference[5] = base + 21;         // Value at offset 21
      h_reference[6] = base + 11;         // Value at offset 11
      h_reference[7] = base + 0;          // Value at offset 0;
  
      CountingInputIterator<T> d_itr(base);
      Test(d_itr, h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      unsigned long long  max_items   = ((1ull << ((sizeof(T) * 8) - 1)) - 1);
      size_t  copy_items              = (size_t) CUB_MIN(max_items - base, 100);     // potential issue with differencing overflows when T is a smaller type than can handle the offset
      T                   *h_copy     = new T[copy_items];
      T                   *d_copy     = NULL;
  
      for (unsigned long long i = 0; i < copy_items; ++i)
          h_copy[i] = d_itr[i];
  
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * copy_items));
      thrust::device_ptr<T> d_copy_wrapper(d_copy);
      thrust::copy_if(d_itr, d_itr + copy_items, d_copy_wrapper, SelectOp());
  
      int compare = CompareDeviceResults(h_copy, d_copy, copy_items, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      if (h_copy) delete[] h_copy;
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif // THRUST_VERSION
  }
  
  
  /**
   * Test modified iterator
   */
  template <typename T, typename CastT>
  void TestModified()
  {
      printf("
  Testing cache-modified iterator on type %s
  ", typeid(T).name()); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      const unsigned int TEST_VALUES = 11000;
  
      T *h_data = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
      {
          RandomBits(h_data[i]);
      }
  
      // Allocate device arrays
      T *d_data = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_data, sizeof(T) * TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_data, h_data, sizeof(T) * TEST_VALUES, cudaMemcpyHostToDevice));
  
      // Initialize reference data
      T h_reference[8];
      h_reference[0] = h_data[0];          // Value at offset 0
      h_reference[1] = h_data[100];        // Value at offset 100
      h_reference[2] = h_data[1000];       // Value at offset 1000
      h_reference[3] = h_data[10000];      // Value at offset 10000
      h_reference[4] = h_data[1];          // Value at offset 1
      h_reference[5] = h_data[21];         // Value at offset 21
      h_reference[6] = h_data[11];         // Value at offset 11
      h_reference[7] = h_data[0];          // Value at offset 0;
  
      Test(CacheModifiedInputIterator<LOAD_DEFAULT, T>((CastT*) d_data), h_reference);
      Test(CacheModifiedInputIterator<LOAD_CA, T>((CastT*) d_data), h_reference);
      Test(CacheModifiedInputIterator<LOAD_CG, T>((CastT*) d_data), h_reference);
      Test(CacheModifiedInputIterator<LOAD_CS, T>((CastT*) d_data), h_reference);
      Test(CacheModifiedInputIterator<LOAD_CV, T>((CastT*) d_data), h_reference);
      Test(CacheModifiedInputIterator<LOAD_LDG, T>((CastT*) d_data), h_reference);
      Test(CacheModifiedInputIterator<LOAD_VOLATILE, T>((CastT*) d_data), h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      T *d_copy = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * TEST_VALUES));
  
      CacheModifiedInputIterator<LOAD_CG, T> d_in_itr((CastT*) d_data);
      CacheModifiedOutputIterator<STORE_CG, T> d_out_itr((CastT*) d_copy);
  
      thrust::copy_if(d_in_itr, d_in_itr + TEST_VALUES, d_out_itr, SelectOp());
  
      int compare = CompareDeviceResults(h_data, d_copy, TEST_VALUES, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Cleanup
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif // THRUST_VERSION
  
      if (h_data) delete[] h_data;
      if (d_data) CubDebugExit(g_allocator.DeviceFree(d_data));
  }
  
  
  /**
   * Test transform iterator
   */
  template <typename T, typename CastT>
  void TestTransform()
  {
      printf("
  Testing transform iterator on type %s
  ", typeid(T).name()); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      const unsigned int TEST_VALUES = 11000;
  
      T *h_data = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
      {
          InitValue(INTEGER_SEED, h_data[i], i);
      }
  
      // Allocate device arrays
      T *d_data = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_data, sizeof(T) * TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_data, h_data, sizeof(T) * TEST_VALUES, cudaMemcpyHostToDevice));
  
      TransformOp<T> op;
  
      // Initialize reference data
      T h_reference[8];
      h_reference[0] = op(h_data[0]);          // Value at offset 0
      h_reference[1] = op(h_data[100]);        // Value at offset 100
      h_reference[2] = op(h_data[1000]);       // Value at offset 1000
      h_reference[3] = op(h_data[10000]);      // Value at offset 10000
      h_reference[4] = op(h_data[1]);          // Value at offset 1
      h_reference[5] = op(h_data[21]);         // Value at offset 21
      h_reference[6] = op(h_data[11]);         // Value at offset 11
      h_reference[7] = op(h_data[0]);          // Value at offset 0;
  
      TransformInputIterator<T, TransformOp<T>, CastT*> d_itr((CastT*) d_data, op);
      Test(d_itr, h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      T *h_copy = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
          h_copy[i] = op(h_data[i]);
  
      T *d_copy = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * TEST_VALUES));
      thrust::device_ptr<T> d_copy_wrapper(d_copy);
  
      thrust::copy_if(d_itr, d_itr + TEST_VALUES, d_copy_wrapper, SelectOp());
  
      int compare = CompareDeviceResults(h_copy, d_copy, TEST_VALUES, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Cleanup
      if (h_copy) delete[] h_copy;
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif // THRUST_VERSION
  
      if (h_data) delete[] h_data;
      if (d_data) CubDebugExit(g_allocator.DeviceFree(d_data));
  }
  
  
  /**
   * Test tex-obj texture iterator
   */
  template <typename T, typename CastT>
  void TestTexObj()
  {
      printf("
  Testing tex-obj iterator on type %s
  ", typeid(T).name()); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      const unsigned int TEST_VALUES          = 11000;
      const unsigned int DUMMY_OFFSET         = 500;
      const unsigned int DUMMY_TEST_VALUES    = TEST_VALUES - DUMMY_OFFSET;
  
      T *h_data = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
      {
          RandomBits(h_data[i]);
      }
  
      // Allocate device arrays
      T *d_data   = NULL;
      T *d_dummy  = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_data, sizeof(T) * TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_data, h_data, sizeof(T) * TEST_VALUES, cudaMemcpyHostToDevice));
  
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_dummy, sizeof(T) * DUMMY_TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_dummy, h_data + DUMMY_OFFSET, sizeof(T) * DUMMY_TEST_VALUES, cudaMemcpyHostToDevice));
  
      // Initialize reference data
      T h_reference[8];
      h_reference[0] = h_data[0];          // Value at offset 0
      h_reference[1] = h_data[100];        // Value at offset 100
      h_reference[2] = h_data[1000];       // Value at offset 1000
      h_reference[3] = h_data[10000];      // Value at offset 10000
      h_reference[4] = h_data[1];          // Value at offset 1
      h_reference[5] = h_data[21];         // Value at offset 21
      h_reference[6] = h_data[11];         // Value at offset 11
      h_reference[7] = h_data[0];          // Value at offset 0;
  
      // Create and bind obj-based test iterator
      TexObjInputIterator<T> d_obj_itr;
      CubDebugExit(d_obj_itr.BindTexture((CastT*) d_data, sizeof(T) * TEST_VALUES));
  
      Test(d_obj_itr, h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      T *d_copy = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * TEST_VALUES));
      thrust::device_ptr<T> d_copy_wrapper(d_copy);
  
      CubDebugExit(cudaMemset(d_copy, 0, sizeof(T) * TEST_VALUES));
      thrust::copy_if(d_obj_itr, d_obj_itr + TEST_VALUES, d_copy_wrapper, SelectOp());
  
      int compare = CompareDeviceResults(h_data, d_copy, TEST_VALUES, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Cleanup
      CubDebugExit(d_obj_itr.UnbindTexture());
  
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif  // THRUST_VERSION
  
      if (h_data) delete[] h_data;
      if (d_data) CubDebugExit(g_allocator.DeviceFree(d_data));
      if (d_dummy) CubDebugExit(g_allocator.DeviceFree(d_dummy));
  }
  
  
  #if CUDA_VERSION >= 5050
  
  /**
   * Test tex-ref texture iterator
   */
  template <typename T, typename CastT>
  void TestTexRef()
  {
      printf("
  Testing tex-ref iterator on type %s
  ", typeid(T).name()); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      const unsigned int TEST_VALUES          = 11000;
      const unsigned int DUMMY_OFFSET         = 500;
      const unsigned int DUMMY_TEST_VALUES    = TEST_VALUES - DUMMY_OFFSET;
  
      T *h_data = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
      {
          RandomBits(h_data[i]);
      }
  
      // Allocate device arrays
      T *d_data   = NULL;
      T *d_dummy  = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_data, sizeof(T) * TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_data, h_data, sizeof(T) * TEST_VALUES, cudaMemcpyHostToDevice));
  
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_dummy, sizeof(T) * DUMMY_TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_dummy, h_data + DUMMY_OFFSET, sizeof(T) * DUMMY_TEST_VALUES, cudaMemcpyHostToDevice));
  
      // Initialize reference data
      T h_reference[8];
      h_reference[0] = h_data[0];          // Value at offset 0
      h_reference[1] = h_data[100];        // Value at offset 100
      h_reference[2] = h_data[1000];       // Value at offset 1000
      h_reference[3] = h_data[10000];      // Value at offset 10000
      h_reference[4] = h_data[1];          // Value at offset 1
      h_reference[5] = h_data[21];         // Value at offset 21
      h_reference[6] = h_data[11];         // Value at offset 11
      h_reference[7] = h_data[0];          // Value at offset 0;
  
      // Create and bind ref-based test iterator
      TexRefInputIterator<T, __LINE__> d_ref_itr;
      CubDebugExit(d_ref_itr.BindTexture((CastT*) d_data, sizeof(T) * TEST_VALUES));
  
      // Create and bind dummy iterator of same type to check with interferance
      TexRefInputIterator<T, __LINE__> d_ref_itr2;
      CubDebugExit(d_ref_itr2.BindTexture((CastT*) d_dummy, sizeof(T) * DUMMY_TEST_VALUES));
  
      Test(d_ref_itr, h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      T *d_copy = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * TEST_VALUES));
      thrust::device_ptr<T> d_copy_wrapper(d_copy);
  
      CubDebugExit(cudaMemset(d_copy, 0, sizeof(T) * TEST_VALUES));
      thrust::copy_if(d_ref_itr, d_ref_itr + TEST_VALUES, d_copy_wrapper, SelectOp());
  
      int compare = CompareDeviceResults(h_data, d_copy, TEST_VALUES, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif  // THRUST_VERSION
  
      CubDebugExit(d_ref_itr.UnbindTexture());
      CubDebugExit(d_ref_itr2.UnbindTexture());
  
      if (h_data) delete[] h_data;
      if (d_data) CubDebugExit(g_allocator.DeviceFree(d_data));
      if (d_dummy) CubDebugExit(g_allocator.DeviceFree(d_dummy));
  }
  
  
  /**
   * Test texture transform iterator
   */
  template <typename T, typename CastT>
  void TestTexTransform()
  {
      printf("
  Testing tex-transform iterator on type %s
  ", typeid(T).name()); fflush(stdout);
  
      //
      // Test iterator manipulation in kernel
      //
  
      const unsigned int TEST_VALUES = 11000;
  
      T *h_data = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
      {
          InitValue(INTEGER_SEED, h_data[i], i);
      }
  
      // Allocate device arrays
      T *d_data = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_data, sizeof(T) * TEST_VALUES));
      CubDebugExit(cudaMemcpy(d_data, h_data, sizeof(T) * TEST_VALUES, cudaMemcpyHostToDevice));
  
      TransformOp<T> op;
  
      // Initialize reference data
      T h_reference[8];
      h_reference[0] = op(h_data[0]);          // Value at offset 0
      h_reference[1] = op(h_data[100]);        // Value at offset 100
      h_reference[2] = op(h_data[1000]);       // Value at offset 1000
      h_reference[3] = op(h_data[10000]);      // Value at offset 10000
      h_reference[4] = op(h_data[1]);          // Value at offset 1
      h_reference[5] = op(h_data[21]);         // Value at offset 21
      h_reference[6] = op(h_data[11]);         // Value at offset 11
      h_reference[7] = op(h_data[0]);          // Value at offset 0;
  
      // Create and bind texture iterator
      typedef TexRefInputIterator<T, __LINE__> TextureIterator;
  
      TextureIterator d_tex_itr;
      CubDebugExit(d_tex_itr.BindTexture((CastT*) d_data, sizeof(T) * TEST_VALUES));
  
      // Create transform iterator
      TransformInputIterator<T, TransformOp<T>, TextureIterator> xform_itr(d_tex_itr, op);
  
      Test(xform_itr, h_reference);
  
  #if (THRUST_VERSION >= 100700)  // Thrust 1.7 or newer
  
      //
      // Test with thrust::copy_if()
      //
  
      T *h_copy = new T[TEST_VALUES];
      for (int i = 0; i < TEST_VALUES; ++i)
          h_copy[i] = op(h_data[i]);
  
      T *d_copy = NULL;
      CubDebugExit(g_allocator.DeviceAllocate((void**)&d_copy, sizeof(T) * TEST_VALUES));
      thrust::device_ptr<T> d_copy_wrapper(d_copy);
  
      thrust::copy_if(xform_itr, xform_itr + TEST_VALUES, d_copy_wrapper, SelectOp());
  
      int compare = CompareDeviceResults(h_copy, d_copy, TEST_VALUES, g_verbose, g_verbose);
      printf("\tthrust::copy_if(): %s
  ", (compare) ? "FAIL" : "PASS");
      AssertEquals(0, compare);
  
      // Cleanup
      if (h_copy) delete[] h_copy;
      if (d_copy) CubDebugExit(g_allocator.DeviceFree(d_copy));
  
  #endif  // THRUST_VERSION
  
      CubDebugExit(d_tex_itr.UnbindTexture());
      if (h_data) delete[] h_data;
      if (d_data) CubDebugExit(g_allocator.DeviceFree(d_data));
  }
  
  #endif  // CUDA_VERSION
  
  
  
  
  /**
   * Run non-integer tests
   */
  template <typename T, typename CastT>
  void Test(Int2Type<false> is_integer)
  {
      TestModified<T, CastT>();
      TestTransform<T, CastT>();
  
  #if CUB_CDP
      // Test tex-obj iterators if CUDA dynamic parallelism enabled
      TestTexObj<T, CastT>(type_string);
  #endif  // CUB_CDP
  
  #if CUDA_VERSION >= 5050
      // Test tex-ref iterators for CUDA 5.5
      TestTexRef<T, CastT>();
      TestTexTransform<T, CastT>();
  #endif  // CUDA_VERSION
  }
  
  /**
   * Run integer tests
   */
  template <typename T, typename CastT>
  void Test(Int2Type<true> is_integer)
  {
      TestConstant<T>(0);
      TestConstant<T>(99);
  
      TestCounting<T>(0);
      TestCounting<T>(99);
  
      // Run non-integer tests
      Test<T, CastT>(Int2Type<false>());
  }
  
  /**
   * Run tests
   */
  template <typename T>
  void Test()
  {
      enum {
          IS_INTEGER = (Traits<T>::CATEGORY == SIGNED_INTEGER) || (Traits<T>::CATEGORY == UNSIGNED_INTEGER)
      };
  
      // Test non-const type
      Test<T, T>(Int2Type<IS_INTEGER>());
  
      // Test non-const type
      Test<T, const T>(Int2Type<IS_INTEGER>());
  }
  
  
  /**
   * Main
   */
  int main(int argc, char** argv)
  {
      // Initialize command line
      CommandLineArgs args(argc, argv);
      g_verbose = args.CheckCmdLineFlag("v");
  
      // Print usage
      if (args.CheckCmdLineFlag("help"))
      {
          printf("%s "
              "[--device=<device-id>] "
              "[--v] "
              "
  ", argv[0]);
          exit(0);
      }
  
      // Initialize device
      CubDebugExit(args.DeviceInit());
  
      // Get ptx version
      int ptx_version;
      CubDebugExit(PtxVersion(ptx_version));
  
      // Evaluate different data types
      Test<char>();
      Test<short>();
      Test<int>();
      Test<long>();
      Test<long long>();
      Test<float>();
      if (ptx_version > 120)                          // Don't check doubles on PTX120 or below because they're down-converted
          Test<double>();
  
      Test<char2>();
      Test<short2>();
      Test<int2>();
      Test<long2>();
      Test<longlong2>();
      Test<float2>();
      if (ptx_version > 120)                          // Don't check doubles on PTX120 or below because they're down-converted
          Test<double2>();
  
      Test<char3>();
      Test<short3>();
      Test<int3>();
      Test<long3>();
      Test<longlong3>();
      Test<float3>();
      if (ptx_version > 120)                          // Don't check doubles on PTX120 or below because they're down-converted
          Test<double3>();
  
      Test<char4>();
      Test<short4>();
      Test<int4>();
      Test<long4>();
      Test<longlong4>();
      Test<float4>();
      if (ptx_version > 120)                          // Don't check doubles on PTX120 or below because they're down-converted
          Test<double4>();
  
      Test<TestFoo>();
      Test<TestBar>();
  
      printf("
  Test complete
  "); fflush(stdout);
  
      return 0;
  }