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CUB Memory Manager + cuDNN v4 and v5 support #3919
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/****************************************************************************** | ||
* Copyright (c) 2011, Duane Merrill. All rights reserved. | ||
* Copyright (c) 2011-2015, 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. | ||
* | ||
******************************************************************************/ | ||
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/** | ||
* \file | ||
* Simple x86/x64 atomic spinlock, portable across MS Windows (cl.exe) & Linux (g++) | ||
*/ | ||
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#pragma once | ||
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#if defined(_WIN32) || defined(_WIN64) | ||
#include <intrin.h> | ||
#include <windows.h> | ||
#undef small // Windows is terrible for polluting macro namespace | ||
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/** | ||
* Compiler read/write barrier | ||
*/ | ||
#pragma intrinsic(_ReadWriteBarrier) | ||
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#endif | ||
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#include "../util_namespace.cuh" | ||
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/// Optional outer namespace(s) | ||
CUB_NS_PREFIX | ||
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/// CUB namespace | ||
namespace cub { | ||
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#if defined(_MSC_VER) | ||
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// Microsoft VC++ | ||
typedef long Spinlock; | ||
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#else | ||
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// GNU g++ | ||
typedef int Spinlock; | ||
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/** | ||
* Compiler read/write barrier | ||
*/ | ||
__forceinline__ void _ReadWriteBarrier() | ||
{ | ||
__sync_synchronize(); | ||
} | ||
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/** | ||
* Atomic exchange | ||
*/ | ||
__forceinline__ long _InterlockedExchange(volatile int * const Target, const int Value) | ||
{ | ||
// NOTE: __sync_lock_test_and_set would be an acquire barrier, so we force a full barrier | ||
_ReadWriteBarrier(); | ||
return __sync_lock_test_and_set(Target, Value); | ||
} | ||
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/** | ||
* Pause instruction to prevent excess processor bus usage | ||
*/ | ||
__forceinline__ void YieldProcessor() | ||
{ | ||
#ifndef __arm__ | ||
asm volatile("pause\n": : :"memory"); | ||
#endif // __arm__ | ||
} | ||
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#endif // defined(_MSC_VER) | ||
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/** | ||
* Return when the specified spinlock has been acquired | ||
*/ | ||
__forceinline__ void Lock(volatile Spinlock *lock) | ||
{ | ||
while (1) | ||
{ | ||
if (!_InterlockedExchange(lock, 1)) return; | ||
while (*lock) YieldProcessor(); | ||
} | ||
} | ||
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/** | ||
* Release the specified spinlock | ||
*/ | ||
__forceinline__ void Unlock(volatile Spinlock *lock) | ||
{ | ||
_ReadWriteBarrier(); | ||
*lock = 0; | ||
} | ||
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} // CUB namespace | ||
CUB_NS_POSTFIX // Optional outer namespace(s) | ||
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This can go in its own commit.
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It's actually possible if you have the right deb repo:
http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64