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/* ************************************************************************
* Copyright (C) 2018-2024 Advanced Micro Devices, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell cop-
* ies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IM-
* PLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNE-
* CTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* ************************************************************************ */
#pragma once
#include "rocblas.h"
#include "rocblas_test.hpp"
#include "singletons.hpp"
#include <cinttypes>
#define MEM_MAX_GUARD_PAD 8192
//
// Forward declaration of rocblas_init_nan
//
template <typename T>
void rocblas_init_nan(T* A, size_t N);
template <typename T>
inline rocblas_stride align_stride(rocblas_stride stride)
{
// hipMalloc aligns pointers on 256 byte boundaries (or a multiple of 256)
// this function is to align stride*sizeof(T) on 256 byte boundaries
size_t byte_alignment = 256;
if(byte_alignment % sizeof(T) == 0)
{
size_t type_alignment = byte_alignment / sizeof(T);
return ((stride - 1) / type_alignment + 1) * type_alignment;
}
else
{
return ((stride - 1) / byte_alignment + 1) * byte_alignment;
}
}
/* ============================================================================================ */
/*! \brief base-class to allocate/deallocate device memory */
template <typename T>
class d_vector
{
private:
size_t m_size;
size_t m_pad, m_guard_len;
size_t m_bytes;
static bool m_init_guard;
public:
inline size_t nmemb() const noexcept
{
return m_size;
}
public:
bool use_HMM = false;
public:
static T m_guard[MEM_MAX_GUARD_PAD];
#ifdef GOOGLE_TEST
d_vector(size_t s, bool HMM = false)
: m_size(s)
, m_pad(std::min(g_DVEC_PAD, size_t(MEM_MAX_GUARD_PAD)))
, m_guard_len(m_pad * sizeof(T))
, m_bytes((s + m_pad * 2) * sizeof(T))
, use_HMM(HMM)
{
// Initialize m_guard with random data
if(!m_init_guard)
{
rocblas_init_nan(m_guard, MEM_MAX_GUARD_PAD);
m_init_guard = true;
}
}
#else
d_vector(size_t s, bool HMM = false)
: m_size(s)
, m_pad(0) // save current pad length
, m_guard_len(0 * sizeof(T))
, m_bytes(s ? s * sizeof(T) : sizeof(T))
, use_HMM(HMM)
{
}
#endif
T* device_vector_setup()
{
T* d = nullptr;
if(use_HMM ? hipMallocManaged(&d, m_bytes) : (hipMalloc)(&d, m_bytes) != hipSuccess)
{
rocblas_cerr << "Warning: hip can't allocate " << m_bytes << " bytes ("
<< (m_bytes >> 30) << " GB)" << std::endl;
d = nullptr;
}
#ifdef GOOGLE_TEST
else
{
if(m_guard_len > 0)
{
// Copy m_guard to device memory before allocated memory
if(hipMemcpy(d, m_guard, m_guard_len, hipMemcpyDefault) != hipSuccess)
rocblas_cerr << "Error: hipMemcpy pre-guard copy failure." << std::endl;
// Point to allocated block
d += m_pad;
// Copy m_guard to device memory after allocated memory
if(hipMemcpy(d + m_size, m_guard, m_guard_len, hipMemcpyDefault) != hipSuccess)
rocblas_cerr << "Error: hipMemcpy post-guard copy failure." << std::endl;
}
}
#endif
return d;
}
void device_vector_check(T* d)
{
#ifdef GOOGLE_TEST
if(m_pad > 0)
{
std::vector<T> host(m_pad);
// Copy device memory after allocated memory to host
if(hipMemcpy(host.data(), d + m_size, m_guard_len, hipMemcpyDefault) != hipSuccess)
rocblas_cerr << "Error: hipMemcpy post-guard copy failure." << std::endl;
// Make sure no corruption has occurred
EXPECT_EQ(memcmp(host.data(), m_guard, m_guard_len), 0);
// Point to m_guard before allocated memory
d -= m_pad;
// Copy device memory after allocated memory to host
if(hipMemcpy(host.data(), d, m_guard_len, hipMemcpyDefault) != hipSuccess)
rocblas_cerr << "Error: hipMemcpy pre-guard copy failure." << std::endl;
// Make sure no corruption has occurred
EXPECT_EQ(memcmp(host.data(), m_guard, m_guard_len), 0);
}
#endif
}
void device_vector_teardown(T* d)
{
if(d != nullptr)
{
device_vector_check(d);
if(m_pad > 0)
d -= m_pad; // restore to start of alloc
// Free device memory
CHECK_HIP_ERROR((hipFree)(d));
}
}
};
template <typename T>
T d_vector<T>::m_guard[MEM_MAX_GUARD_PAD] = {};
template <typename T>
bool d_vector<T>::m_init_guard = false;
#undef MEM_MAX_GUARD_PAD
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