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1004 lines
34 KiB
C++
1004 lines
34 KiB
C++
#pragma clang diagnostic ignored "-Wreserved-identifier"
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#include <memory>
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#include <cstddef>
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#include <stdexcept>
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#include <string>
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#include <random>
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#include <iostream>
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#include <iomanip>
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#include <thread>
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#include <dlfcn.h>
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#include <pcg_random.hpp>
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#include <base/defines.h>
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#include <Common/Stopwatch.h>
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#include <emmintrin.h>
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#include <immintrin.h>
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#include <boost/program_options.hpp>
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template <typename F, typename MemcpyImpl>
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void NO_INLINE loop(uint8_t * dst, uint8_t * src, size_t size, F && chunk_size_distribution, MemcpyImpl && impl)
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{
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while (size)
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{
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size_t bytes_to_copy = std::min<size_t>(size, chunk_size_distribution());
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impl(dst, src, bytes_to_copy);
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dst += bytes_to_copy;
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src += bytes_to_copy;
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size -= bytes_to_copy;
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/// Execute at least one SSE instruction as a penalty after running AVX code.
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__asm__ __volatile__ ("pxor %%xmm15, %%xmm15" ::: "xmm15");
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}
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}
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using RNG = pcg32_fast;
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template <size_t N>
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size_t generatorUniform(RNG & rng) { return rng() % N; };
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template <typename F, typename MemcpyImpl>
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uint64_t test(uint8_t * dst, uint8_t * src, size_t size, size_t iterations, size_t num_threads, F && generator, MemcpyImpl && impl, const char * name)
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{
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Stopwatch watch;
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std::vector<std::thread> threads;
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threads.reserve(num_threads);
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for (size_t thread_num = 0; thread_num < num_threads; ++thread_num)
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{
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size_t begin = size * thread_num / num_threads;
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size_t end = size * (thread_num + 1) / num_threads;
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threads.emplace_back([begin, end, iterations, &src, &dst, &generator, &impl]
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{
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for (size_t iteration = 0; iteration < iterations; ++iteration)
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{
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loop(
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iteration % 2 ? &src[begin] : &dst[begin],
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iteration % 2 ? &dst[begin] : &src[begin],
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end - begin,
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[rng = RNG(), &generator]() mutable { return generator(rng); },
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std::forward<MemcpyImpl>(impl)); /// NOLINT(bugprone-use-after-move,hicpp-invalid-access-moved)
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}
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});
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}
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for (auto & thread : threads)
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thread.join();
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uint64_t elapsed_ns = watch.elapsed();
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/// Validation
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for (size_t i = 0; i < size; ++i)
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if (dst[i] != uint8_t(i))
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throw std::logic_error("Incorrect result");
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std::cout << name;
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return elapsed_ns;
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}
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using memcpy_type = void * (*)(const void * __restrict, void * __restrict, size_t);
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static void * memcpy_erms(void * dst, const void * src, size_t size)
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{
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asm volatile (
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"rep movsb"
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: "=D"(dst), "=S"(src), "=c"(size)
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: "0"(dst), "1"(src), "2"(size)
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: "memory");
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return dst;
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}
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static void * memcpy_trivial(void * __restrict dst_, const void * __restrict src_, size_t size)
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{
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char * __restrict dst = reinterpret_cast<char * __restrict>(dst_);
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const char * __restrict src = reinterpret_cast<const char * __restrict>(src_);
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void * ret = dst;
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while (size > 0)
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{
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*dst = *src;
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++dst;
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++src;
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--size;
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}
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return ret;
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}
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extern "C" void * memcpy_jart(void * dst, const void * src, size_t size);
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extern "C" void MemCpy(void * dst, const void * src, size_t size);
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void * memcpy_fast_sse(void * dst, const void * src, size_t size);
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void * memcpy_fast_avx(void * dst, const void * src, size_t size);
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void * memcpy_tiny(void * dst, const void * src, size_t size);
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static void * memcpySSE2(void * __restrict destination, const void * __restrict source, size_t size)
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{
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unsigned char *dst = reinterpret_cast<unsigned char *>(destination);
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const unsigned char *src = reinterpret_cast<const unsigned char *>(source);
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size_t padding;
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// small memory copy
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if (size <= 16)
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return memcpy_tiny(dst, src, size);
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// align destination to 16 bytes boundary
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padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
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if (padding > 0)
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{
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__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
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_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
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dst += padding;
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src += padding;
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size -= padding;
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}
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// medium size copy
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__m128i c0;
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for (; size >= 16; size -= 16)
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{
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c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
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src += 16;
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_mm_store_si128((reinterpret_cast<__m128i*>(dst)), c0);
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dst += 16;
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}
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memcpy_tiny(dst, src, size);
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return destination;
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}
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static void * memcpySSE2Unrolled2(void * __restrict destination, const void * __restrict source, size_t size)
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{
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unsigned char *dst = reinterpret_cast<unsigned char *>(destination);
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const unsigned char *src = reinterpret_cast<const unsigned char *>(source);
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size_t padding;
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// small memory copy
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if (size <= 32)
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return memcpy_tiny(dst, src, size);
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// align destination to 16 bytes boundary
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padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
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if (padding > 0)
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{
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__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
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_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
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dst += padding;
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src += padding;
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size -= padding;
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}
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// medium size copy
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__m128i c0;
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__m128i c1;
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for (; size >= 32; size -= 32)
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{
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c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 0);
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c1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 1);
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src += 32;
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 0), c0);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 1), c1);
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dst += 32;
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}
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memcpy_tiny(dst, src, size);
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return destination;
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}
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static void * memcpySSE2Unrolled4(void * __restrict destination, const void * __restrict source, size_t size)
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{
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unsigned char *dst = reinterpret_cast<unsigned char *>(destination);
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const unsigned char *src = reinterpret_cast<const unsigned char *>(source);
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size_t padding;
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// small memory copy
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if (size <= 64)
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return memcpy_tiny(dst, src, size);
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// align destination to 16 bytes boundary
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padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
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if (padding > 0)
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{
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__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
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_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
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dst += padding;
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src += padding;
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size -= padding;
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}
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// medium size copy
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__m128i c0;
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__m128i c1;
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__m128i c2;
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__m128i c3;
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for (; size >= 64; size -= 64)
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{
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c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 0);
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c1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 1);
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c2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 2);
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c3 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 3);
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src += 64;
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 0), c0);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 1), c1);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 2), c2);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 3), c3);
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dst += 64;
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}
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memcpy_tiny(dst, src, size);
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return destination;
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}
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static void * memcpySSE2Unrolled8(void * __restrict destination, const void * __restrict source, size_t size)
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{
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unsigned char *dst = reinterpret_cast<unsigned char *>(destination);
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const unsigned char *src = reinterpret_cast<const unsigned char *>(source);
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size_t padding;
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// small memory copy
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if (size <= 128)
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return memcpy_tiny(dst, src, size);
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// align destination to 16 bytes boundary
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padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
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if (padding > 0)
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{
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__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
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_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
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dst += padding;
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src += padding;
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size -= padding;
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}
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// medium size copy
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__m128i c0;
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__m128i c1;
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__m128i c2;
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__m128i c3;
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__m128i c4;
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__m128i c5;
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__m128i c6;
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__m128i c7;
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for (; size >= 128; size -= 128)
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{
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c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 0);
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c1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 1);
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c2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 2);
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c3 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 3);
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c4 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 4);
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c5 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 5);
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c6 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 6);
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c7 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 7);
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src += 128;
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 0), c0);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 1), c1);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 2), c2);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 3), c3);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 4), c4);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 5), c5);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 6), c6);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 7), c7);
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dst += 128;
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}
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memcpy_tiny(dst, src, size);
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return destination;
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}
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//static __attribute__((__always_inline__, __target__("sse2")))
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__attribute__((__always_inline__)) inline void
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memcpy_my_medium_sse(uint8_t * __restrict & dst, const uint8_t * __restrict & src, size_t & size)
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{
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/// Align destination to 16 bytes boundary.
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size_t padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
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if (padding > 0)
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{
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__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
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_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
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dst += padding;
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src += padding;
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size -= padding;
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}
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/// Aligned unrolled copy.
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__m128i c0;
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__m128i c1;
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__m128i c2;
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__m128i c3;
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__m128i c4;
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__m128i c5;
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__m128i c6;
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__m128i c7;
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while (size >= 128)
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{
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c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 0);
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c1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 1);
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c2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 2);
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c3 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 3);
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c4 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 4);
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c5 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 5);
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c6 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 6);
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c7 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 7);
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src += 128;
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 0), c0);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 1), c1);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 2), c2);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 3), c3);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 4), c4);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 5), c5);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 6), c6);
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_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 7), c7);
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dst += 128;
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size -= 128;
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}
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}
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__attribute__((__target__("avx")))
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void memcpy_my_medium_avx(uint8_t * __restrict & __restrict dst, const uint8_t * __restrict & __restrict src, size_t & __restrict size)
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{
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size_t padding = (32 - (reinterpret_cast<size_t>(dst) & 31)) & 31;
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if (padding > 0)
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{
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__m256i head = _mm256_loadu_si256(reinterpret_cast<const __m256i*>(src));
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_mm256_storeu_si256(reinterpret_cast<__m256i*>(dst), head);
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dst += padding;
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src += padding;
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size -= padding;
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}
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__m256i c0;
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__m256i c1;
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__m256i c2;
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__m256i c3;
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__m256i c4;
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__m256i c5;
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__m256i c6;
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__m256i c7;
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while (size >= 256)
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{
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c0 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 0);
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c1 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 1);
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c2 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 2);
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c3 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 3);
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c4 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 4);
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c5 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 5);
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c6 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 6);
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c7 = _mm256_loadu_si256((reinterpret_cast<const __m256i*>(src)) + 7);
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src += 256;
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 0), c0);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 1), c1);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 2), c2);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 3), c3);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 4), c4);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 5), c5);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 6), c6);
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_mm256_store_si256(((reinterpret_cast<__m256i*>(dst)) + 7), c7);
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dst += 256;
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size -= 256;
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}
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}
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bool have_avx = true;
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static uint8_t * memcpy_my(uint8_t * __restrict dst, const uint8_t * __restrict src, size_t size)
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{
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uint8_t * ret = dst;
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tail:
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if (size <= 16)
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{
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if (size >= 8)
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{
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__builtin_memcpy(dst + size - 8, src + size - 8, 8);
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__builtin_memcpy(dst, src, 8);
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}
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else if (size >= 4)
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{
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__builtin_memcpy(dst + size - 4, src + size - 4, 4);
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__builtin_memcpy(dst, src, 4);
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}
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else if (size >= 2)
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{
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__builtin_memcpy(dst + size - 2, src + size - 2, 2);
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__builtin_memcpy(dst, src, 2);
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}
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else if (size >= 1)
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{
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*dst = *src;
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}
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}
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else if (have_avx)
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{
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if (size <= 32)
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{
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__builtin_memcpy(dst, src, 8);
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__builtin_memcpy(dst + 8, src + 8, 8);
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dst += 16;
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src += 16;
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size -= 16;
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goto tail;
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}
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if (size <= 256)
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{
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__asm__(
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"vmovups -0x20(%[s],%[size],1), %%ymm0\n"
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"vmovups %%ymm0, -0x20(%[d],%[size],1)\n"
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: [d]"+r"(dst), [s]"+r"(src)
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: [size]"r"(size)
|
|
: "ymm0", "memory");
|
|
|
|
while (size > 32)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups %%ymm0, (%[d])\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
:
|
|
: "ymm0", "memory");
|
|
|
|
dst += 32;
|
|
src += 32;
|
|
size -= 32;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size_t padding = (32 - (reinterpret_cast<size_t>(dst) & 31)) & 31;
|
|
|
|
if (padding > 0)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups %%ymm0, (%[d])\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
:
|
|
: "ymm0", "memory");
|
|
|
|
dst += padding;
|
|
src += padding;
|
|
size -= padding;
|
|
}
|
|
|
|
while (size >= 256)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups 0x20(%[s]), %%ymm1\n"
|
|
"vmovups 0x40(%[s]), %%ymm2\n"
|
|
"vmovups 0x60(%[s]), %%ymm3\n"
|
|
"vmovups 0x80(%[s]), %%ymm4\n"
|
|
"vmovups 0xa0(%[s]), %%ymm5\n"
|
|
"vmovups 0xc0(%[s]), %%ymm6\n"
|
|
"vmovups 0xe0(%[s]), %%ymm7\n"
|
|
"add $0x100,%[s]\n"
|
|
"vmovaps %%ymm0, (%[d])\n"
|
|
"vmovaps %%ymm1, 0x20(%[d])\n"
|
|
"vmovaps %%ymm2, 0x40(%[d])\n"
|
|
"vmovaps %%ymm3, 0x60(%[d])\n"
|
|
"vmovaps %%ymm4, 0x80(%[d])\n"
|
|
"vmovaps %%ymm5, 0xa0(%[d])\n"
|
|
"vmovaps %%ymm6, 0xc0(%[d])\n"
|
|
"vmovaps %%ymm7, 0xe0(%[d])\n"
|
|
"add $0x100, %[d]\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
:
|
|
: "ymm0", "ymm1", "ymm2", "ymm3", "ymm4", "ymm5", "ymm6", "ymm7", "memory");
|
|
|
|
size -= 256;
|
|
}
|
|
|
|
goto tail;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (size <= 128)
|
|
{
|
|
_mm_storeu_si128(reinterpret_cast<__m128i *>(dst + size - 16), _mm_loadu_si128(reinterpret_cast<const __m128i *>(src + size - 16)));
|
|
|
|
while (size > 16)
|
|
{
|
|
_mm_storeu_si128(reinterpret_cast<__m128i *>(dst), _mm_loadu_si128(reinterpret_cast<const __m128i *>(src)));
|
|
dst += 16;
|
|
src += 16;
|
|
size -= 16;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/// Align destination to 16 bytes boundary.
|
|
size_t padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
|
|
|
|
if (padding > 0)
|
|
{
|
|
__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
|
|
_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
|
|
dst += padding;
|
|
src += padding;
|
|
size -= padding;
|
|
}
|
|
|
|
/// Aligned unrolled copy.
|
|
__m128i c0;
|
|
__m128i c1;
|
|
__m128i c2;
|
|
__m128i c3;
|
|
__m128i c4;
|
|
__m128i c5;
|
|
__m128i c6;
|
|
__m128i c7;
|
|
|
|
while (size >= 128)
|
|
{
|
|
c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 0);
|
|
c1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 1);
|
|
c2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 2);
|
|
c3 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 3);
|
|
c4 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 4);
|
|
c5 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 5);
|
|
c6 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 6);
|
|
c7 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 7);
|
|
src += 128;
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 0), c0);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 1), c1);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 2), c2);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 3), c3);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 4), c4);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 5), c5);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 6), c6);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 7), c7);
|
|
dst += 128;
|
|
|
|
size -= 128;
|
|
}
|
|
|
|
goto tail;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static uint8_t * memcpy_my2(uint8_t * __restrict dst, const uint8_t * __restrict src, size_t size)
|
|
{
|
|
uint8_t * ret = dst;
|
|
|
|
if (size <= 16)
|
|
{
|
|
if (size >= 8)
|
|
{
|
|
__builtin_memcpy(dst + size - 8, src + size - 8, 8);
|
|
__builtin_memcpy(dst, src, 8);
|
|
}
|
|
else if (size >= 4)
|
|
{
|
|
__builtin_memcpy(dst + size - 4, src + size - 4, 4);
|
|
__builtin_memcpy(dst, src, 4);
|
|
}
|
|
else if (size >= 2)
|
|
{
|
|
__builtin_memcpy(dst + size - 2, src + size - 2, 2);
|
|
__builtin_memcpy(dst, src, 2);
|
|
}
|
|
else if (size >= 1)
|
|
{
|
|
*dst = *src;
|
|
}
|
|
}
|
|
else if (size <= 128)
|
|
{
|
|
_mm_storeu_si128(reinterpret_cast<__m128i *>(dst + size - 16), _mm_loadu_si128(reinterpret_cast<const __m128i *>(src + size - 16)));
|
|
|
|
while (size > 16)
|
|
{
|
|
_mm_storeu_si128(reinterpret_cast<__m128i *>(dst), _mm_loadu_si128(reinterpret_cast<const __m128i *>(src)));
|
|
dst += 16;
|
|
src += 16;
|
|
size -= 16;
|
|
}
|
|
}
|
|
else if (size < 30000 || !have_avx)
|
|
{
|
|
/// Align destination to 16 bytes boundary.
|
|
size_t padding = (16 - (reinterpret_cast<size_t>(dst) & 15)) & 15;
|
|
|
|
if (padding > 0)
|
|
{
|
|
__m128i head = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src));
|
|
_mm_storeu_si128(reinterpret_cast<__m128i*>(dst), head);
|
|
dst += padding;
|
|
src += padding;
|
|
size -= padding;
|
|
}
|
|
|
|
/// Aligned unrolled copy.
|
|
__m128i c0;
|
|
__m128i c1;
|
|
__m128i c2;
|
|
__m128i c3;
|
|
__m128i c4;
|
|
__m128i c5;
|
|
__m128i c6;
|
|
__m128i c7;
|
|
|
|
while (size >= 128)
|
|
{
|
|
c0 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 0);
|
|
c1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 1);
|
|
c2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 2);
|
|
c3 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 3);
|
|
c4 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 4);
|
|
c5 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 5);
|
|
c6 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 6);
|
|
c7 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(src) + 7);
|
|
src += 128;
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 0), c0);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 1), c1);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 2), c2);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 3), c3);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 4), c4);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 5), c5);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 6), c6);
|
|
_mm_store_si128((reinterpret_cast<__m128i*>(dst) + 7), c7);
|
|
dst += 128;
|
|
|
|
size -= 128;
|
|
}
|
|
|
|
_mm_storeu_si128(reinterpret_cast<__m128i *>(dst + size - 16), _mm_loadu_si128(reinterpret_cast<const __m128i *>(src + size - 16)));
|
|
|
|
while (size > 16)
|
|
{
|
|
_mm_storeu_si128(reinterpret_cast<__m128i *>(dst), _mm_loadu_si128(reinterpret_cast<const __m128i *>(src)));
|
|
dst += 16;
|
|
src += 16;
|
|
size -= 16;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size_t padding = (32 - (reinterpret_cast<size_t>(dst) & 31)) & 31;
|
|
|
|
if (padding > 0)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups %%ymm0, (%[d])\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
:
|
|
: "ymm0", "memory");
|
|
|
|
dst += padding;
|
|
src += padding;
|
|
size -= padding;
|
|
}
|
|
|
|
while (size >= 512) /// NOLINT
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups 0x20(%[s]), %%ymm1\n"
|
|
"vmovups 0x40(%[s]), %%ymm2\n"
|
|
"vmovups 0x60(%[s]), %%ymm3\n"
|
|
"vmovups 0x80(%[s]), %%ymm4\n"
|
|
"vmovups 0xa0(%[s]), %%ymm5\n"
|
|
"vmovups 0xc0(%[s]), %%ymm6\n"
|
|
"vmovups 0xe0(%[s]), %%ymm7\n"
|
|
"vmovups 0x100(%[s]), %%ymm8\n"
|
|
"vmovups 0x120(%[s]), %%ymm9\n"
|
|
"vmovups 0x140(%[s]), %%ymm10\n"
|
|
"vmovups 0x160(%[s]), %%ymm11\n"
|
|
"vmovups 0x180(%[s]), %%ymm12\n"
|
|
"vmovups 0x1a0(%[s]), %%ymm13\n"
|
|
"vmovups 0x1c0(%[s]), %%ymm14\n"
|
|
"vmovups 0x1e0(%[s]), %%ymm15\n"
|
|
"add $0x200, %[s]\n"
|
|
"sub $0x200, %[size]\n"
|
|
"vmovaps %%ymm0, (%[d])\n"
|
|
"vmovaps %%ymm1, 0x20(%[d])\n"
|
|
"vmovaps %%ymm2, 0x40(%[d])\n"
|
|
"vmovaps %%ymm3, 0x60(%[d])\n"
|
|
"vmovaps %%ymm4, 0x80(%[d])\n"
|
|
"vmovaps %%ymm5, 0xa0(%[d])\n"
|
|
"vmovaps %%ymm6, 0xc0(%[d])\n"
|
|
"vmovaps %%ymm7, 0xe0(%[d])\n"
|
|
"vmovaps %%ymm8, 0x100(%[d])\n"
|
|
"vmovaps %%ymm9, 0x120(%[d])\n"
|
|
"vmovaps %%ymm10, 0x140(%[d])\n"
|
|
"vmovaps %%ymm11, 0x160(%[d])\n"
|
|
"vmovaps %%ymm12, 0x180(%[d])\n"
|
|
"vmovaps %%ymm13, 0x1a0(%[d])\n"
|
|
"vmovaps %%ymm14, 0x1c0(%[d])\n"
|
|
"vmovaps %%ymm15, 0x1e0(%[d])\n"
|
|
"add $0x200, %[d]\n"
|
|
: [d]"+r"(dst), [s]"+r"(src), [size]"+r"(size)
|
|
:
|
|
: "ymm0", "ymm1", "ymm2", "ymm3", "ymm4", "ymm5", "ymm6", "ymm7",
|
|
"ymm8", "ymm9", "ymm10", "ymm11", "ymm12", "ymm13", "ymm14", "ymm15",
|
|
"memory");
|
|
}
|
|
|
|
/*while (size >= 256)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups 0x20(%[s]), %%ymm1\n"
|
|
"vmovups 0x40(%[s]), %%ymm2\n"
|
|
"vmovups 0x60(%[s]), %%ymm3\n"
|
|
"vmovups 0x80(%[s]), %%ymm4\n"
|
|
"vmovups 0xa0(%[s]), %%ymm5\n"
|
|
"vmovups 0xc0(%[s]), %%ymm6\n"
|
|
"vmovups 0xe0(%[s]), %%ymm7\n"
|
|
"add $0x100,%[s]\n"
|
|
"vmovaps %%ymm0, (%[d])\n"
|
|
"vmovaps %%ymm1, 0x20(%[d])\n"
|
|
"vmovaps %%ymm2, 0x40(%[d])\n"
|
|
"vmovaps %%ymm3, 0x60(%[d])\n"
|
|
"vmovaps %%ymm4, 0x80(%[d])\n"
|
|
"vmovaps %%ymm5, 0xa0(%[d])\n"
|
|
"vmovaps %%ymm6, 0xc0(%[d])\n"
|
|
"vmovaps %%ymm7, 0xe0(%[d])\n"
|
|
"add $0x100, %[d]\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
:
|
|
: "ymm0", "ymm1", "ymm2", "ymm3", "ymm4", "ymm5", "ymm6", "ymm7", "memory");
|
|
|
|
size -= 256;
|
|
}*/
|
|
|
|
/*while (size > 128)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups 0x20(%[s]), %%ymm1\n"
|
|
"vmovups 0x40(%[s]), %%ymm2\n"
|
|
"vmovups 0x60(%[s]), %%ymm3\n"
|
|
"add $0x80, %[s]\n"
|
|
"sub $0x80, %[size]\n"
|
|
"vmovaps %%ymm0, (%[d])\n"
|
|
"vmovaps %%ymm1, 0x20(%[d])\n"
|
|
"vmovaps %%ymm2, 0x40(%[d])\n"
|
|
"vmovaps %%ymm3, 0x60(%[d])\n"
|
|
"add $0x80, %[d]\n"
|
|
: [d]"+r"(dst), [s]"+r"(src), [size]"+r"(size)
|
|
:
|
|
: "ymm0", "ymm1", "ymm2", "ymm3", "memory");
|
|
}*/
|
|
|
|
__asm__(
|
|
"vmovups -0x20(%[s],%[size],1), %%ymm0\n"
|
|
"vmovups %%ymm0, -0x20(%[d],%[size],1)\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
: [size]"r"(size)
|
|
: "ymm0", "memory");
|
|
|
|
while (size > 32)
|
|
{
|
|
__asm__(
|
|
"vmovups (%[s]), %%ymm0\n"
|
|
"vmovups %%ymm0, (%[d])\n"
|
|
: [d]"+r"(dst), [s]"+r"(src)
|
|
:
|
|
: "ymm0", "memory");
|
|
|
|
dst += 32;
|
|
src += 32;
|
|
size -= 32;
|
|
}
|
|
|
|
__asm__ __volatile__ ("vzeroupper"
|
|
::: "ymm0", "ymm1", "ymm2", "ymm3", "ymm4", "ymm5", "ymm6", "ymm7",
|
|
"ymm8", "ymm9", "ymm10", "ymm11", "ymm12", "ymm13", "ymm14", "ymm15");
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
extern "C" void * __memcpy_erms(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_sse2_unaligned(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_ssse3(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_ssse3_back(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_avx_unaligned(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_avx_unaligned_erms(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_avx512_unaligned(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_avx512_unaligned_erms(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
extern "C" void * __memcpy_avx512_no_vzeroupper(void * __restrict destination, const void * __restrict source, size_t size); /// NOLINT
|
|
|
|
|
|
#define VARIANT(N, NAME) \
|
|
if (memcpy_variant == (N)) \
|
|
return test(dst, src, size, iterations, num_threads, std::forward<F>(generator), NAME, #NAME);
|
|
|
|
template <typename F>
|
|
uint64_t dispatchMemcpyVariants(size_t memcpy_variant, uint8_t * dst, uint8_t * src, size_t size, size_t iterations, size_t num_threads, F && generator)
|
|
{
|
|
memcpy_type memcpy_libc_old = reinterpret_cast<memcpy_type>(dlsym(RTLD_NEXT, "memcpy"));
|
|
|
|
VARIANT(1, memcpy)
|
|
VARIANT(2, memcpy_trivial)
|
|
VARIANT(3, memcpy_libc_old)
|
|
VARIANT(4, memcpy_erms)
|
|
VARIANT(5, MemCpy)
|
|
VARIANT(6, memcpySSE2)
|
|
VARIANT(7, memcpySSE2Unrolled2)
|
|
VARIANT(8, memcpySSE2Unrolled4)
|
|
VARIANT(9, memcpySSE2Unrolled8)
|
|
VARIANT(10, memcpy_fast_sse)
|
|
VARIANT(11, memcpy_fast_avx)
|
|
VARIANT(12, memcpy_my)
|
|
VARIANT(13, memcpy_my2)
|
|
|
|
VARIANT(21, __memcpy_erms)
|
|
VARIANT(22, __memcpy_sse2_unaligned)
|
|
VARIANT(23, __memcpy_ssse3)
|
|
VARIANT(24, __memcpy_ssse3_back)
|
|
VARIANT(25, __memcpy_avx_unaligned)
|
|
VARIANT(26, __memcpy_avx_unaligned_erms)
|
|
VARIANT(27, __memcpy_avx512_unaligned)
|
|
VARIANT(28, __memcpy_avx512_unaligned_erms)
|
|
VARIANT(29, __memcpy_avx512_no_vzeroupper)
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint64_t dispatchVariants(
|
|
size_t memcpy_variant, size_t generator_variant, uint8_t * dst, uint8_t * src, size_t size, size_t iterations, size_t num_threads)
|
|
{
|
|
if (generator_variant == 1)
|
|
return dispatchMemcpyVariants(memcpy_variant, dst, src, size, iterations, num_threads, generatorUniform<16>);
|
|
if (generator_variant == 2)
|
|
return dispatchMemcpyVariants(memcpy_variant, dst, src, size, iterations, num_threads, generatorUniform<256>);
|
|
if (generator_variant == 3)
|
|
return dispatchMemcpyVariants(memcpy_variant, dst, src, size, iterations, num_threads, generatorUniform<4096>);
|
|
if (generator_variant == 4)
|
|
return dispatchMemcpyVariants(memcpy_variant, dst, src, size, iterations, num_threads, generatorUniform<65536>);
|
|
if (generator_variant == 5)
|
|
return dispatchMemcpyVariants(memcpy_variant, dst, src, size, iterations, num_threads, generatorUniform<1048576>);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int main(int argc, char ** argv)
|
|
{
|
|
boost::program_options::options_description desc("Allowed options");
|
|
desc.add_options()("help,h", "produce help message")
|
|
("size", boost::program_options::value<size_t>()->default_value(1000000), "Bytes to copy on every iteration")
|
|
("iterations", boost::program_options::value<size_t>(), "Number of iterations")
|
|
("threads", boost::program_options::value<size_t>()->default_value(1), "Number of copying threads")
|
|
("distribution", boost::program_options::value<size_t>()->default_value(4), "Distribution of chunk sizes to perform copy")
|
|
("variant", boost::program_options::value<size_t>(), "Variant of memcpy implementation")
|
|
("tsv", "Print result in tab-separated format")
|
|
;
|
|
|
|
boost::program_options::variables_map options;
|
|
boost::program_options::store(boost::program_options::parse_command_line(argc, argv, desc), options);
|
|
|
|
if (options.count("help") || !options.count("variant"))
|
|
{
|
|
std::cout << R"(Usage:
|
|
|
|
for size in 4096 16384 50000 65536 100000 1000000 10000000 100000000; do
|
|
for threads in 1 2 4 $(($(nproc) / 2)) $(nproc); do
|
|
for distribution in 1 2 3 4 5; do
|
|
for variant in {1..13} {21..29}; do
|
|
for i in {1..10}; do
|
|
./memcpy-bench --tsv --size $size --variant $variant --threads $threads --distribution $distribution;
|
|
done;
|
|
done;
|
|
done;
|
|
done;
|
|
done | tee result.tsv
|
|
|
|
clickhouse-local --structure '
|
|
name String,
|
|
size UInt64,
|
|
iterations UInt64,
|
|
threads UInt16,
|
|
generator UInt8,
|
|
memcpy UInt8,
|
|
elapsed UInt64
|
|
' --query "
|
|
SELECT
|
|
size, name,
|
|
avg(1000 * elapsed / size / iterations) AS s,
|
|
count() AS c
|
|
FROM table
|
|
GROUP BY size, name
|
|
ORDER BY size ASC, s DESC
|
|
" --output-format PrettyCompact < result.tsv
|
|
|
|
)" << std::endl;
|
|
std::cout << desc << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
size_t size = options["size"].as<size_t>();
|
|
size_t num_threads = options["threads"].as<size_t>();
|
|
size_t memcpy_variant = options["variant"].as<size_t>();
|
|
size_t generator_variant = options["distribution"].as<size_t>();
|
|
|
|
size_t iterations;
|
|
if (options.count("iterations"))
|
|
{
|
|
iterations = options["iterations"].as<size_t>();
|
|
}
|
|
else
|
|
{
|
|
iterations = 10000000000ULL / size;
|
|
|
|
if (generator_variant == 1)
|
|
iterations /= 10;
|
|
}
|
|
|
|
std::unique_ptr<uint8_t[]> src(new uint8_t[size]);
|
|
std::unique_ptr<uint8_t[]> dst(new uint8_t[size]);
|
|
|
|
/// Fill src with some pattern for validation.
|
|
for (size_t i = 0; i < size; ++i)
|
|
src[i] = i;
|
|
|
|
/// Fill dst to avoid page faults.
|
|
memset(dst.get(), 0, size);
|
|
|
|
uint64_t elapsed_ns = dispatchVariants(memcpy_variant, generator_variant, dst.get(), src.get(), size, iterations, num_threads);
|
|
|
|
std::cout << std::fixed << std::setprecision(3);
|
|
|
|
if (options.count("tsv"))
|
|
{
|
|
std::cout
|
|
<< '\t' << size
|
|
<< '\t' << iterations
|
|
<< '\t' << num_threads
|
|
<< '\t' << generator_variant
|
|
<< '\t' << memcpy_variant
|
|
<< '\t' << elapsed_ns
|
|
<< '\n';
|
|
}
|
|
else
|
|
{
|
|
std::cout << ": " << num_threads << " threads, " << "size: " << size << ", distribution " << generator_variant
|
|
<< ", processed in " << (elapsed_ns / 1e9) << " sec, " << (size * iterations * 1.0 / elapsed_ns) << " GB/sec\n";
|
|
}
|
|
|
|
return 0;
|
|
}
|