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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 DeviceRadixSort utilities
******************************************************************************/
// Ensure printing of CUDA runtime errors to console
#define CUB_STDERR
#include <stdio.h>
#include <algorithm>
#include <typeinfo>
#if (__CUDACC_VER_MAJOR__ >= 9)
#include <cuda_fp16.h>
#endif
#include <cub/util_allocator.cuh>
#include <cub/device/device_radix_sort.cuh>
#include <cub/device/device_segmented_radix_sort.cuh>
#include "test_util.h"
#include <thrust/device_ptr.h>
#include <thrust/sort.h>
#include <thrust/reverse.h>
using namespace cub;
//---------------------------------------------------------------------
// Globals, constants and typedefs
//---------------------------------------------------------------------
bool g_verbose = false;
int g_timing_iterations = 0;
int g_repeat = 0;
CachingDeviceAllocator g_allocator(true);
// Dispatch types
enum Backend
{
CUB, // CUB method (allows overwriting of input)
CUB_NO_OVERWRITE, // CUB method (disallows overwriting of input)
CUB_SEGMENTED, // CUB method (allows overwriting of input)
CUB_SEGMENTED_NO_OVERWRITE, // CUB method (disallows overwriting of input)
THRUST, // Thrust method
CDP, // GPU-based (dynamic parallelism) dispatch to CUB method
};
//---------------------------------------------------------------------
// Dispatch to different DeviceRadixSort entrypoints
//---------------------------------------------------------------------
/**
* Dispatch to CUB sorting entrypoint (specialized for ascending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<false> is_descending,
Int2Type<CUB> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
return DeviceRadixSort::SortPairs(
d_temp_storage, temp_storage_bytes,
d_keys, d_values,
num_items, begin_bit, end_bit, stream, debug_synchronous);
}
/**
* Dispatch to CUB_NO_OVERWRITE sorting entrypoint (specialized for ascending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<false> is_descending,
Int2Type<CUB_NO_OVERWRITE> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
KeyT const *const_keys_itr = d_keys.Current();
ValueT const *const_values_itr = d_values.Current();
cudaError_t retval = DeviceRadixSort::SortPairs(
d_temp_storage, temp_storage_bytes,
const_keys_itr, d_keys.Alternate(), const_values_itr, d_values.Alternate(),
num_items, begin_bit, end_bit, stream, debug_synchronous);
d_keys.selector ^= 1;
d_values.selector ^= 1;
return retval;
}
/**
* Dispatch to CUB sorting entrypoint (specialized for descending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<true> is_descending,
Int2Type<CUB> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
return DeviceRadixSort::SortPairsDescending(
d_temp_storage, temp_storage_bytes,
d_keys, d_values,
num_items, begin_bit, end_bit, stream, debug_synchronous);
}
/**
* Dispatch to CUB_NO_OVERWRITE sorting entrypoint (specialized for descending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<true> is_descending,
Int2Type<CUB_NO_OVERWRITE> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
KeyT const *const_keys_itr = d_keys.Current();
ValueT const *const_values_itr = d_values.Current();
cudaError_t retval = DeviceRadixSort::SortPairsDescending(
d_temp_storage, temp_storage_bytes,
const_keys_itr, d_keys.Alternate(), const_values_itr, d_values.Alternate(),
num_items, begin_bit, end_bit, stream, debug_synchronous);
d_keys.selector ^= 1;
d_values.selector ^= 1;
return retval;
}
//---------------------------------------------------------------------
// Dispatch to different DeviceRadixSort entrypoints
//---------------------------------------------------------------------
/**
* Dispatch to CUB_SEGMENTED sorting entrypoint (specialized for ascending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<false> is_descending,
Int2Type<CUB_SEGMENTED> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
return DeviceSegmentedRadixSort::SortPairs(
d_temp_storage, temp_storage_bytes,
d_keys, d_values,
num_items, num_segments, d_segment_offsets, d_segment_offsets + 1,
begin_bit, end_bit, stream, debug_synchronous);
}
/**
* Dispatch to CUB_SEGMENTED_NO_OVERWRITE sorting entrypoint (specialized for ascending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<false> is_descending,
Int2Type<CUB_SEGMENTED_NO_OVERWRITE> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
KeyT const *const_keys_itr = d_keys.Current();
ValueT const *const_values_itr = d_values.Current();
cudaError_t retval = DeviceSegmentedRadixSort::SortPairs(
d_temp_storage, temp_storage_bytes,
const_keys_itr, d_keys.Alternate(), const_values_itr, d_values.Alternate(),
num_items, num_segments, d_segment_offsets, d_segment_offsets + 1,
begin_bit, end_bit, stream, debug_synchronous);
d_keys.selector ^= 1;
d_values.selector ^= 1;
return retval;
}
/**
* Dispatch to CUB_SEGMENTED sorting entrypoint (specialized for descending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<true> is_descending,
Int2Type<CUB_SEGMENTED> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
return DeviceSegmentedRadixSort::SortPairsDescending(
d_temp_storage, temp_storage_bytes,
d_keys, d_values,
num_items, num_segments, d_segment_offsets, d_segment_offsets + 1,
begin_bit, end_bit, stream, debug_synchronous);
}
/**
* Dispatch to CUB_SEGMENTED_NO_OVERWRITE sorting entrypoint (specialized for descending)
*/
template <typename KeyT, typename ValueT>
CUB_RUNTIME_FUNCTION
__forceinline__
cudaError_t Dispatch(
Int2Type<true> is_descending,
Int2Type<CUB_SEGMENTED_NO_OVERWRITE> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void* d_temp_storage,
size_t& temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
KeyT const *const_keys_itr = d_keys.Current();
ValueT const *const_values_itr = d_values.Current();
cudaError_t retval = DeviceSegmentedRadixSort::SortPairsDescending(
d_temp_storage, temp_storage_bytes,
const_keys_itr, d_keys.Alternate(), const_values_itr, d_values.Alternate(),
num_items, num_segments, d_segment_offsets, d_segment_offsets + 1,
begin_bit, end_bit, stream, debug_synchronous);
d_keys.selector ^= 1;
d_values.selector ^= 1;
return retval;
}
//---------------------------------------------------------------------
// Dispatch to different Thrust entrypoints
//---------------------------------------------------------------------
/**
* Dispatch keys-only to Thrust sorting entrypoint
*/
template <int IS_DESCENDING, typename KeyT>
cudaError_t Dispatch(
Int2Type<IS_DESCENDING> is_descending,
Int2Type<THRUST> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void *d_temp_storage,
size_t &temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<NullType> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
if (d_temp_storage == 0)
{
temp_storage_bytes = 1;
}
else
{
thrust::device_ptr<KeyT> d_keys_wrapper(d_keys.Current());
if (IS_DESCENDING) thrust::reverse(d_keys_wrapper, d_keys_wrapper + num_items);
thrust::sort(d_keys_wrapper, d_keys_wrapper + num_items);
if (IS_DESCENDING) thrust::reverse(d_keys_wrapper, d_keys_wrapper + num_items);
}
return cudaSuccess;
}
/**
* Dispatch key-value pairs to Thrust sorting entrypoint
*/
template <int IS_DESCENDING, typename KeyT, typename ValueT>
cudaError_t Dispatch(
Int2Type<IS_DESCENDING> is_descending,
Int2Type<THRUST> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void *d_temp_storage,
size_t &temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
if (d_temp_storage == 0)
{
temp_storage_bytes = 1;
}
else
{
thrust::device_ptr<KeyT> d_keys_wrapper(d_keys.Current());
thrust::device_ptr<ValueT> d_values_wrapper(d_values.Current());
if (IS_DESCENDING) {
thrust::reverse(d_keys_wrapper, d_keys_wrapper + num_items);
thrust::reverse(d_values_wrapper, d_values_wrapper + num_items);
}
thrust::sort_by_key(d_keys_wrapper, d_keys_wrapper + num_items, d_values_wrapper);
if (IS_DESCENDING) {
thrust::reverse(d_keys_wrapper, d_keys_wrapper + num_items);
thrust::reverse(d_values_wrapper, d_values_wrapper + num_items);
}
}
return cudaSuccess;
}
//---------------------------------------------------------------------
// CUDA Nested Parallelism Test Kernel
//---------------------------------------------------------------------
/**
* Simple wrapper kernel to invoke DeviceRadixSort
*/
template <int IS_DESCENDING, typename KeyT, typename ValueT>
__global__ void CnpDispatchKernel(
Int2Type<IS_DESCENDING> is_descending,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void *d_temp_storage,
size_t temp_storage_bytes,
DoubleBuffer<KeyT> d_keys,
DoubleBuffer<ValueT> d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
bool debug_synchronous)
{
#ifndef CUB_CDP
*d_cdp_error = cudaErrorNotSupported;
#else
*d_cdp_error = Dispatch(
is_descending, Int2Type<CUB>(), d_selector, d_temp_storage_bytes, d_cdp_error,
d_temp_storage, temp_storage_bytes, d_keys, d_values,
num_items, num_segments, d_segment_offsets,
begin_bit, end_bit, 0, debug_synchronous);
*d_temp_storage_bytes = temp_storage_bytes;
*d_selector = d_keys.selector;
#endif
}
/**
* Dispatch to CDP kernel
*/
template <int IS_DESCENDING, typename KeyT, typename ValueT>
cudaError_t Dispatch(
Int2Type<IS_DESCENDING> is_descending,
Int2Type<CDP> dispatch_to,
int *d_selector,
size_t *d_temp_storage_bytes,
cudaError_t *d_cdp_error,
void *d_temp_storage,
size_t &temp_storage_bytes,
DoubleBuffer<KeyT> &d_keys,
DoubleBuffer<ValueT> &d_values,
int num_items,
int num_segments,
const int *d_segment_offsets,
int begin_bit,
int end_bit,
cudaStream_t stream,
bool debug_synchronous)
{
// Invoke kernel to invoke device-side dispatch
CnpDispatchKernel<<<1,1>>>(
is_descending, d_selector, d_temp_storage_bytes, d_cdp_error,
d_temp_storage, temp_storage_bytes, d_keys, d_values,
num_items, num_segments, d_segment_offsets,
begin_bit, end_bit, debug_synchronous);
// Copy out selector
CubDebugExit(cudaMemcpy(&d_keys.selector, d_selector, sizeof(int) * 1, cudaMemcpyDeviceToHost));
d_values.selector = d_keys.selector;
// Copy out temp_storage_bytes
CubDebugExit(cudaMemcpy(&temp_storage_bytes, d_temp_storage_bytes, sizeof(size_t) * 1, cudaMemcpyDeviceToHost));
// Copy out error
cudaError_t retval;
CubDebugExit(cudaMemcpy(&retval, d_cdp_error, sizeof(cudaError_t) * 1, cudaMemcpyDeviceToHost));
return retval;
}
//---------------------------------------------------------------------
// Problem generation
//---------------------------------------------------------------------
/**
* Simple key-value pairing
*/
template <
typename KeyT,
typename ValueT,
bool IS_FLOAT = (Traits<KeyT>::CATEGORY == FLOATING_POINT)>
struct Pair
{
KeyT key;
ValueT value;
bool operator<(const Pair &b) const
{
return (key < b.key);
}
};
/**
* Simple key-value pairing (specialized for bool types)
*/
template <typename ValueT>
struct Pair<bool, ValueT, false>
{
bool key;
ValueT value;
bool operator<(const Pair &b) const
{
return (!key && b.key);
}
};
/**
* Simple key-value pairing (specialized for floating point types)
*/
template <typename KeyT, typename ValueT>
struct Pair<KeyT, ValueT, true>
{
KeyT key;
ValueT value;
bool operator<(const Pair &b) const
{
if (key < b.key)
return true;
if (key > b.key)
return false;
// KeyT in unsigned bits
typedef typename Traits<KeyT>::UnsignedBits UnsignedBits;
// Return true if key is negative zero and b.key is positive zero
UnsignedBits key_bits = *reinterpret_cast<UnsignedBits*>(const_cast<KeyT*>(&key));
UnsignedBits b_key_bits = *reinterpret_cast<UnsignedBits*>(const_cast<KeyT*>(&b.key));
UnsignedBits HIGH_BIT = Traits<KeyT>::HIGH_BIT;
return ((key_bits & HIGH_BIT) != 0) && ((b_key_bits & HIGH_BIT) == 0);
}
};
/**
* Initialize key data
*/
template <typename KeyT>
void InitializeKeyBits(
GenMode gen_mode,
KeyT *h_keys,
int num_items,
int entropy_reduction)
{
for (int i = 0; i < num_items; ++i)
InitValue(gen_mode, h_keys[i], i);
}
/**
* Initialize solution
*/
template <bool IS_DESCENDING, typename KeyT>
void InitializeSolution(
KeyT *h_keys,
int num_items,
int num_segments,
int *h_segment_offsets,
int begin_bit,
int end_bit,
int *&h_reference_ranks,
KeyT *&h_reference_keys)
{
typedef Pair<KeyT, int> PairT;
PairT *h_pairs = new PairT[num_items];
int num_bits = end_bit - begin_bit;
for (int i = 0; i < num_items; ++i)
{
// Mask off unwanted portions
if (num_bits < sizeof(KeyT) * 8)
{
unsigned long long base = 0;
memcpy(&base, &h_keys[i], sizeof(KeyT));
base &= ((1ull << num_bits) - 1) << begin_bit;
memcpy(&h_pairs[i].key, &base, sizeof(KeyT));
}
else
{
h_pairs[i].key = h_keys[i];
}
h_pairs[i].value = i;
}
printf("
Sorting reference solution on CPU (%d segments)...", num_segments); fflush(stdout);
for (int i = 0; i < num_segments; ++i)
{
if (IS_DESCENDING) std::reverse(h_pairs + h_segment_offsets[i], h_pairs + h_segment_offsets[i + 1]);
std::stable_sort( h_pairs + h_segment_offsets[i], h_pairs + h_segment_offsets[i + 1]);
if (IS_DESCENDING) std::reverse(h_pairs + h_segment_offsets[i], h_pairs + h_segment_offsets[i + 1]);
}
printf(" Done.
"); fflush(stdout);
h_reference_ranks = new int[num_items];
h_reference_keys = new KeyT[num_items];
for (int i = 0; i < num_items; ++i)
{
h_reference_ranks[i] = h_pairs[i].value;
h_reference_keys[i] = h_keys[h_pairs[i].value];
}
if (h_pairs) delete[] h_pairs;
}
//---------------------------------------------------------------------
// Test generation
//---------------------------------------------------------------------
/**
* Test DeviceRadixSort
*/
template <
Backend BACKEND,
bool IS_DESCENDING,
typename KeyT,
typename ValueT>
void Test(
KeyT *h_keys,
ValueT *h_values,
int num_items,
int num_segments,
int *h_segment_offsets,
int begin_bit,
int end_bit,
KeyT *h_reference_keys,
ValueT *h_reference_values)
{
// Key alias type
#if (__CUDACC_VER_MAJOR__ >= 9)
typedef typename If<Equals<KeyT, half_t>::VALUE, __half, KeyT>::Type KeyAliasT;
#else
typedef KeyT KeyAliasT;
#endif
const bool KEYS_ONLY = Equals<ValueT, NullType>::VALUE;
printf("%s %s cub::DeviceRadixSort %d items, %d segments, %d-byte keys (%s) %d-byte values (%s), descending %d, begin_bit %d, end_bit %d
",
(BACKEND == CUB_NO_OVERWRITE) ? "CUB_NO_OVERWRITE" : (BACKEND == CDP) ? "CDP CUB" : (BACKEND == THRUST) ? "Thrust" : "CUB",
(KEYS_ONLY) ? "keys-only" : "key-value",
num_items, num_segments,
(int) sizeof(KeyT), typeid(KeyT).name(), (KEYS_ONLY) ? 0 : (int) sizeof(ValueT), typeid(ValueT).name(),
IS_DESCENDING, begin_bit, end_bit);
fflush(stdout);
if (g_verbose)
{
printf("Input keys:
");
DisplayResults(h_keys, num_items);
printf("
");
}
// Allocate device arrays
DoubleBuffer<KeyAliasT> d_keys;
DoubleBuffer<ValueT> d_values;
int *d_selector;
int *d_segment_offsets;
size_t *d_temp_storage_bytes;
cudaError_t *d_cdp_error;
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_keys.d_buffers[0], sizeof(KeyT) * num_items));
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_keys.d_buffers[1], sizeof(KeyT) * num_items));
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_selector, sizeof(int) * 1));
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_segment_offsets, sizeof(int) * (num_segments + 1)));
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_temp_storage_bytes, sizeof(size_t) * 1));
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_cdp_error, sizeof(cudaError_t) * 1));
if (!KEYS_ONLY)
{
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_values.d_buffers[0], sizeof(ValueT) * num_items));
CubDebugExit(g_allocator.DeviceAllocate((void**)&d_values.d_buffers[1], sizeof(ValueT) * num_items));
}
// Allocate temporary storage (and make it un-aligned)
size_t temp_storage_bytes = 0;
void *d_temp_storage = NULL;
CubDebugExit(Dispatch(
Int2Type<IS_DESCENDING>(), Int2Type<BACKEND>(), d_selector, d_temp_storage_bytes, d_cdp_error,
d_temp_storage, temp_storage_bytes, d_keys, d_values,
num_items, num_segments, d_segment_offsets,
begin_bit, end_bit, 0, true));
CubDebugExit(g_allocator.DeviceAllocate(&d_temp_storage, temp_storage_bytes + 1));
void* mis_aligned_temp = static_cast<char*>(d_temp_storage) + 1;
// Initialize/clear device arrays
d_keys.selector = 0;
CubDebugExit(cudaMemcpy(d_keys.d_buffers[0], h_keys, sizeof(KeyT) * num_items, cudaMemcpyHostToDevice));
CubDebugExit(cudaMemset(d_keys.d_buffers[1], 0, sizeof(KeyT) * num_items));
if (!KEYS_ONLY)
{
d_values.selector = 0;
CubDebugExit(cudaMemcpy(d_values.d_buffers[0], h_values, sizeof(ValueT) * num_items, cudaMemcpyHostToDevice));
CubDebugExit(cudaMemset(d_values.d_buffers[1], 0, sizeof(ValueT) * num_items));
}
CubDebugExit(cudaMemcpy(d_segment_offsets, h_segment_offsets, sizeof(int) * (num_segments + 1), cudaMemcpyHostToDevice));
// Run warmup/correctness iteration
CubDebugExit(Dispatch(
Int2Type<IS_DESCENDING>(), Int2Type<BACKEND>(), d_selector, d_temp_storage_bytes, d_cdp_error,
mis_aligned_temp, temp_storage_bytes, d_keys, d_values,
num_items, num_segments, d_segment_offsets,
begin_bit, end_bit, 0, true));
// Flush any stdout/stderr
fflush(stdout);
fflush(stderr);
// Check for correctness (and display results, if specified)
printf("Warmup done. Checking results:
"); fflush(stdout);
int compare = CompareDeviceResults(h_reference_keys, reinterpret_cast<KeyT*>(d_keys.Current()), num_items, true, g_verbose);
printf("\t Compare keys (selector %d): %s ", d_keys.selector, compare ? "FAIL" : "PASS"); fflush(stdout);
if (!KEYS_ONLY)
{
int values_compare = CompareDeviceResults(h_reference_values, d_values.Current(), num_items, true, g_verbose);
compare |= values_compare;
printf("\t Compare values (selector %d): %s ", d_values.selector, values_compare ? "FAIL" : "PASS"); fflush(stdout);
}
if (BACKEND == CUB_NO_OVERWRITE)
{
// Check that input isn't overwritten
int input_compare = CompareDeviceResults(h_keys, reinterpret_cast<KeyT*>(d_keys.d_buffers[0]), num_items, true, g_verbose);
compare |= input_compare;
printf("\t Compare input keys: %s ", input_compare ? "FAIL" : "PASS"); fflush(stdout);
}
// Performance
if (g_timing_iterations)
printf("
Performing timing iterations:
"); fflush(stdout);
GpuTimer gpu_timer;
float elapsed_millis = 0.0f;
for (int i = 0; i < g_timing_iterations; ++i)
{
// Initialize/clear device arrays
CubDebugExit(cudaMemcpy(d_keys.d_buffers[d_keys.selector], h_keys, sizeof(KeyT) * num_items, cudaMemcpyHostToDevice));
CubDebugExit(cudaMemset(d_keys.d_buffers[d_keys.selector ^ 1], 0, sizeof(KeyT) * num_items));
if (!KEYS_ONLY)
{
CubDebugExit(cudaMemcpy(d_values.d_buffers[d_values.selector], h_values, sizeof(ValueT) * num_items, cudaMemcpyHostToDevice));
CubDebugExit(cudaMemset(d_values.d_buffers[d_values.selector ^ 1], 0, sizeof(ValueT) * num_items));
}
gpu_timer.Start();
CubDebugExit(Dispatch(
Int2Type<IS_DESCENDING>(), Int2Type<BACKEND>(), d_selector, d_temp_storage_bytes, d_cdp_error,
mis_aligned_temp, temp_storage_bytes, d_keys, d_values,
num_items, num_segments, d_segment_offsets,
begin_bit, end_bit, 0, false));
gpu_timer.Stop();
elapsed_millis += gpu_timer.ElapsedMillis();
}
// Display performance
if (g_timing_iterations > 0)
{
float avg_millis = elapsed_millis / g_timing_iterations;
float giga_rate = float(num_items) / avg_millis / 1000.0f / 1000.0f;
float giga_bandwidth = (KEYS_ONLY) ?
giga_rate * sizeof(KeyT) * 2 :
giga_rate * (sizeof(KeyT) + sizeof(ValueT)) * 2;
printf("
%.3f elapsed ms, %.3f avg ms, %.3f billion items/s, %.3f logical GB/s", elapsed_millis, avg_millis, giga_rate, giga_bandwidth);
}
printf("
");
// Cleanup
if (d_keys.d_buffers[0]) CubDebugExit(g_allocator.DeviceFree(d_keys.d_buffers[0]));
if (d_keys.d_buffers[1]) CubDebugExit(g_allocator.DeviceFree(d_keys.d_buffers[1]));
if (d_values.d_buffers[0]) CubDebugExit(g_allocator.DeviceFree(d_values.d_buffers[0]));
if (d_values.d_buffers[1]) CubDebugExit(g_allocator.DeviceFree(d_values.d_buffers[1]));
if (d_temp_storage) CubDebugExit(g_allocator.DeviceFree(d_temp_storage));
if (d_cdp_error) CubDebugExit(g_allocator.DeviceFree(d_cdp_error));
if (d_selector) CubDebugExit(g_allocator.DeviceFree(d_selector));
if (d_segment_offsets) CubDebugExit(g_allocator.DeviceFree(d_segment_offsets));
if (d_temp_storage_bytes) CubDebugExit(g_allocator.DeviceFree(d_temp_storage_bytes));
// Correctness asserts
AssertEquals(0, compare);
}
/**
* Test backend
*/
template <bool IS_DESCENDING, typename KeyT, typename ValueT>
void TestBackend(
KeyT *h_keys,
int num_items,
int num_segments,
int *h_segment_offsets,
int begin_bit,
int end_bit,
KeyT *h_reference_keys,
int *h_reference_ranks)
{
const bool KEYS_ONLY = Equals<ValueT, NullType>::VALUE;
ValueT *h_values = NULL;
ValueT *h_reference_values = NULL;
if (!KEYS_ONLY)
{
h_values = new ValueT[num_items];
h_reference_values = new ValueT[num_items];
for (int i = 0; i < num_items; ++i)
{
InitValue(INTEGER_SEED, h_values[i], i);
InitValue(INTEGER_SEED, h_reference_values[i], h_reference_ranks[i]);
}
}
#ifdef SEGMENTED_SORT
// Test multi-segment implementations
Test<CUB_SEGMENTED, IS_DESCENDING>( h_keys, h_values, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_values);
Test<CUB_SEGMENTED_NO_OVERWRITE, IS_DESCENDING>( h_keys, h_values, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_values);
#else // SEGMENTED_SORT
if (num_segments == 1)
{
// Test single-segment implementations
Test<CUB, IS_DESCENDING>( h_keys, h_values, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_values);
Test<CUB_NO_OVERWRITE, IS_DESCENDING>( h_keys, h_values, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_values);
#ifdef CUB_CDP
Test<CDP, IS_DESCENDING>( h_keys, h_values, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_values);
#endif
}
#endif // SEGMENTED_SORT
if (h_values) delete[] h_values;
if (h_reference_values) delete[] h_reference_values;
}
/**
* Test value type
*/
template <bool IS_DESCENDING, typename KeyT>
void TestValueTypes(
KeyT *h_keys,
int num_items,
int num_segments,
int *h_segment_offsets,
int begin_bit,
int end_bit)
{
// Initialize the solution
int *h_reference_ranks = NULL;
KeyT *h_reference_keys = NULL;
InitializeSolution<IS_DESCENDING>(h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_ranks, h_reference_keys);
// Test keys-only
TestBackend<IS_DESCENDING, KeyT, NullType> (h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_ranks);
// Test with 8b value
TestBackend<IS_DESCENDING, KeyT, unsigned char> (h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_ranks);
// Test with 32b value
TestBackend<IS_DESCENDING, KeyT, unsigned int> (h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_ranks);
// Test with 64b value
TestBackend<IS_DESCENDING, KeyT, unsigned long long>(h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_ranks);
// Test with non-trivially-constructable value
TestBackend<IS_DESCENDING, KeyT, TestBar> (h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit, h_reference_keys, h_reference_ranks);
// Cleanup
if (h_reference_ranks) delete[] h_reference_ranks;
if (h_reference_keys) delete[] h_reference_keys;
}
/**
* Test ascending/descending
*/
template <typename KeyT>
void TestDirection(
KeyT *h_keys,
int num_items,
int num_segments,
int *h_segment_offsets,
int begin_bit,
int end_bit)
{
TestValueTypes<true>(h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit);
TestValueTypes<false>(h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit);
}
/**
* Test different bit ranges
*/
template <typename KeyT>
void TestBits(
KeyT *h_keys,
int num_items,
int num_segments,
int *h_segment_offsets)
{
// Don't test partial-word sorting for boolean, fp, or signed types (the bit-flipping techniques get in the way)
if ((Traits<KeyT>::CATEGORY == UNSIGNED_INTEGER) && (!Equals<KeyT, bool>::VALUE))
{
// Partial bits
int begin_bit = 1;
int end_bit = (sizeof(KeyT) * 8) - 1;
printf("Testing key bits [%d,%d)
", begin_bit, end_bit); fflush(stdout);
TestDirection(h_keys, num_items, num_segments, h_segment_offsets, begin_bit, end_bit);
// Across subword boundaries
int mid_bit = sizeof(KeyT) * 4;
printf("Testing key bits [%d,%d)
", mid_bit - 1, mid_bit + 1); fflush(stdout);
TestDirection(h_keys, num_items, num_segments, h_segment_offsets, mid_bit - 1, mid_bit + 1);
}
printf("Testing key bits [%d,%d)
", 0, int(sizeof(KeyT)) * 8); fflush(stdout);
TestDirection(h_keys, num_items, num_segments, h_segment_offsets, 0, sizeof(KeyT) * 8);
}
/**
* Test different segment compositions
*/
template <typename KeyT>
void TestSegments(
KeyT *h_keys,
int num_items,
int max_segments)
{
int *h_segment_offsets = new int[max_segments + 1];
#ifdef SEGMENTED_SORT
for (int num_segments = max_segments; num_segments > 1; num_segments = (num_segments + 32 - 1) / 32)
{
if (num_items / num_segments < 128 * 1000) {
// Right now we assign a single thread block to each segment, so lets keep it to under 128K items per segment
InitializeSegments(num_items, num_segments, h_segment_offsets);
TestBits(h_keys, num_items, num_segments, h_segment_offsets);
}
}
#else
// Test single segment
if (num_items < 128 * 1000) {
// Right now we assign a single thread block to each segment, so lets keep it to under 128K items per segment
InitializeSegments(num_items, 1, h_segment_offsets);
TestBits(h_keys, num_items, 1, h_segment_offsets);
}
#endif
if (h_segment_offsets) delete[] h_segment_offsets;
}
/**
* Test different (sub)lengths and number of segments
*/
template <typename KeyT>
void TestSizes(
KeyT *h_keys,
int max_items,
int max_segments)
{
for (int num_items = max_items; num_items > 1; num_items = (num_items + 32 - 1) / 32)
{
TestSegments(h_keys, num_items, max_segments);
}
TestSegments(h_keys, 1, max_segments);
TestSegments(h_keys, 0, max_segments);
}
/**
* Test key sampling distributions
*/
template <typename KeyT>
void TestGen(
int max_items,
int max_segments)
{
int ptx_version;
CubDebugExit(PtxVersion(ptx_version));
if (max_items < 0)
max_items = (ptx_version > 100) ? 9000003 : max_items = 5000003;
if (max_segments < 0)
max_segments = 5003;
KeyT *h_keys = new KeyT[max_items];
for (int entropy_reduction = 0; entropy_reduction <= 6; entropy_reduction += 3)
{
printf("
Testing random %s keys with entropy reduction factor %d
", typeid(KeyT).name(), entropy_reduction); fflush(stdout);
InitializeKeyBits(RANDOM, h_keys, max_items, entropy_reduction);
TestSizes(h_keys, max_items, max_segments);
}
printf("
Testing uniform %s keys
", typeid(KeyT).name()); fflush(stdout);
InitializeKeyBits(UNIFORM, h_keys, max_items, 0);
TestSizes(h_keys, max_items, max_segments);
printf("
Testing natural number %s keys
", typeid(KeyT).name()); fflush(stdout);
InitializeKeyBits(INTEGER_SEED, h_keys, max_items, 0);
TestSizes(h_keys, max_items, max_segments);
if (h_keys) delete[] h_keys;
}
//---------------------------------------------------------------------
// Simple test
//---------------------------------------------------------------------
template <
Backend BACKEND,
typename KeyT,
typename ValueT,
bool IS_DESCENDING>
void Test(
int num_items,
int num_segments,
GenMode gen_mode,
int entropy_reduction,
int begin_bit,
int end_bit)
{
const bool KEYS_ONLY = Equals<ValueT, NullType>::VALUE;
KeyT *h_keys = new KeyT[num_items];
int *h_reference_ranks = NULL;
KeyT *h_reference_keys = NULL;
ValueT *h_values = NULL;
ValueT *h_reference_values = NULL;
int *h_segment_offsets = new int[num_segments + 1];
if (end_bit < 0)
end_bit = sizeof(KeyT) * 8;
InitializeKeyBits(gen_mode, h_keys, num_items, entropy_reduction);
InitializeSegments(num_items, num_segments, h_segment_offsets);
InitializeSolution<IS_DESCENDING>(
h_keys, num_items, num_segments, h_segment_offsets,
begin_bit, end_bit, h_reference_ranks, h_reference_keys);
if (!KEYS_ONLY)
{
h_values = new ValueT[num_items];
h_reference_values = new ValueT[num_items];
for (int i = 0; i < num_items; ++i)
{
InitValue(INTEGER_SEED, h_values[i], i);
InitValue(INTEGER_SEED, h_reference_values[i], h_reference_ranks[i]);
}
}
if (h_reference_ranks) delete[] h_reference_ranks;
printf("
Testing bits [%d,%d) of %s keys with gen-mode %d
", begin_bit, end_bit, typeid(KeyT).name(), gen_mode); fflush(stdout);
Test<BACKEND, IS_DESCENDING>(
h_keys, h_values,
num_items, num_segments, h_segment_offsets,
begin_bit, end_bit, h_reference_keys, h_reference_values);
if (h_keys) delete[] h_keys;
if (h_reference_keys) delete[] h_reference_keys;
if (h_values) delete[] h_values;
if (h_reference_values) delete[] h_reference_values;
if (h_segment_offsets) delete[] h_segment_offsets;
}
//---------------------------------------------------------------------
// Main
//---------------------------------------------------------------------
/**
* Main
*/
int main(int argc, char** argv)
{
int bits = -1;
int num_items = -1;
int num_segments = -1;
int entropy_reduction = 0;
// Initialize command line
CommandLineArgs args(argc, argv);
g_verbose = args.CheckCmdLineFlag("v");
args.GetCmdLineArgument("n", num_items);
args.GetCmdLineArgument("s", num_segments);
args.GetCmdLineArgument("i", g_timing_iterations);
args.GetCmdLineArgument("repeat", g_repeat);
args.GetCmdLineArgument("bits", bits);
args.GetCmdLineArgument("entropy", entropy_reduction);
// Print usage
if (args.CheckCmdLineFlag("help"))
{
printf("%s "
"[--bits=<valid key bits>]"
"[--n=<input items> "
"[--s=<num segments> "
"[--i=<timing iterations> "
"[--device=<device-id>] "
"[--repeat=<repetitions of entire test suite>]"
"[--v] "
"[--entropy=<entropy-reduction factor (default 0)>]"
"
", argv[0]);
exit(0);
}
// Initialize device
CubDebugExit(args.DeviceInit());
// Get ptx version
int ptx_version;
CubDebugExit(PtxVersion(ptx_version));
#ifdef QUICKER_TEST
enum {
IS_DESCENDING = false
};
// Compile/run basic CUB test
if (num_items < 0) num_items = 48000000;
if (num_segments < 0) num_segments = 5000;
Test<CUB, unsigned char, NullType, IS_DESCENDING>(num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<CUB, unsigned char, unsigned int, IS_DESCENDING>(num_items, 1, RANDOM, entropy_reduction, 0, bits);
#if (__CUDACC_VER_MAJOR__ >= 9)
Test<CUB, half_t, NullType, IS_DESCENDING>( num_items, 1, RANDOM, entropy_reduction, 0, bits);
#endif
Test<CUB_SEGMENTED, unsigned int, NullType, IS_DESCENDING>( num_items, num_segments, RANDOM, entropy_reduction, 0, bits);
Test<CUB, unsigned int, NullType, IS_DESCENDING>( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<CUB, unsigned long long, NullType, IS_DESCENDING>( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<CUB, unsigned int, unsigned int, IS_DESCENDING>( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<CUB, unsigned long long, unsigned int, IS_DESCENDING>( num_items, 1, RANDOM, entropy_reduction, 0, bits);
#elif defined(QUICK_TEST)
// Compile/run quick tests
if (num_items < 0) num_items = 48000000;
if (num_segments < 0) num_segments = 5000;
// Compare CUB and thrust on 32b keys-only
Test<CUB, unsigned int, NullType, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<THRUST, unsigned int, NullType, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
// Compare CUB and thrust on 64b keys-only
Test<CUB, unsigned long long, NullType, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<THRUST, unsigned long long, NullType, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
// Compare CUB and thrust on 32b key-value pairs
Test<CUB, unsigned int, unsigned int, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<THRUST, unsigned int, unsigned int, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
// Compare CUB and thrust on 64b key-value pairs
Test<CUB, unsigned long long, unsigned long long, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
Test<THRUST, unsigned long long, unsigned long long, false> ( num_items, 1, RANDOM, entropy_reduction, 0, bits);
#else
// Compile/run thorough tests
for (int i = 0; i <= g_repeat; ++i)
{
TestGen<bool> (num_items, num_segments);
TestGen<char> (num_items, num_segments);
TestGen<signed char> (num_items, num_segments);
TestGen<unsigned char> (num_items, num_segments);
TestGen<short> (num_items, num_segments);
TestGen<unsigned short> (num_items, num_segments);
TestGen<int> (num_items, num_segments);
TestGen<unsigned int> (num_items, num_segments);
TestGen<long> (num_items, num_segments);
TestGen<unsigned long> (num_items, num_segments);
TestGen<long long> (num_items, num_segments);
TestGen<unsigned long long> (num_items, num_segments);
#if (__CUDACC_VER_MAJOR__ >= 9)
TestGen<half_t> (num_items, num_segments);
#endif
TestGen<float> (num_items, num_segments);
if (ptx_version > 120) // Don't check doubles on PTX120 or below because they're down-converted
TestGen<double> (num_items, num_segments);
}
#endif
return 0;
}
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