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Kokkos_Cuda_BasicAllocators.cpp
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Kokkos_Cuda_BasicAllocators.cpp
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/*
//@HEADER
// ************************************************************************
//
// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "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 SANDIA CORPORATION OR THE
// CONTRIBUTORS 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.
//
// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
//
// ************************************************************************
//@HEADER
*/
#include <Kokkos_Macros.hpp>
/* only compile this file if CUDA is enabled for Kokkos */
#ifdef KOKKOS_HAVE_CUDA
#include <impl/Kokkos_Error.hpp>
#include <Cuda/Kokkos_Cuda_BasicAllocators.hpp>
#include <Cuda/Kokkos_Cuda_Error.hpp>
#include <sstream>
namespace
Kokkos
{
namespace
Impl
{
/*--------------------------------------------------------------------------*/
TextureAttribute
::
TextureAttribute
(
void
*
const
alloc_ptr
,
size_t
alloc_size
,
cudaChannelFormatDesc
const
&
desc
)
:
m_tex_obj
(
0
)
{
cuda_device_synchronize
();
struct
cudaResourceDesc
resDesc
;
struct
cudaTextureDesc
texDesc
;
memset
(
&
resDesc
,
0
,
sizeof
(
resDesc
)
);
memset
(
&
texDesc
,
0
,
sizeof
(
texDesc
)
);
resDesc
.
resType
=
cudaResourceTypeLinear
;
resDesc
.
res
.
linear
.
desc
=
desc
;
resDesc
.
res
.
linear
.
sizeInBytes
=
alloc_size
;
resDesc
.
res
.
linear
.
devPtr
=
alloc_ptr
;
CUDA_SAFE_CALL
(
cudaCreateTextureObject
(
&
m_tex_obj
,
&
resDesc
,
&
texDesc
,
NULL
)
);
cuda_device_synchronize
();
}
TextureAttribute
::~
TextureAttribute
()
{
if
(
m_tex_obj
)
{
cudaDestroyTextureObject
(
m_tex_obj
);
}
}
/*--------------------------------------------------------------------------*/
void
*
CudaMallocAllocator
::
allocate
(
size_t
size
)
{
void
*
ptr
=
NULL
;
CUDA_SAFE_CALL
(
cudaMalloc
(
&
ptr
,
size
)
);
return
ptr
;
}
void
CudaMallocAllocator
::
deallocate
(
void
*
ptr
,
size_t
/*size*/
)
{
try
{
CUDA_SAFE_CALL
(
cudaFree
(
ptr
)
);
}
catch
(...)
{}
}
void
*
CudaMallocAllocator
::
reallocate
(
void
*
old_ptr
,
size_t
old_size
,
size_t
new_size
)
{
void
*
ptr
=
old_ptr
;
if
(
old_size
!=
new_size
)
{
ptr
=
allocate
(
new_size
);
size_t
copy_size
=
old_size
<
new_size
?
old_size
:
new_size
;
CUDA_SAFE_CALL
(
cudaMemcpy
(
ptr
,
old_ptr
,
copy_size
,
cudaMemcpyDefault
)
);
deallocate
(
old_ptr
,
old_size
);
}
return
ptr
;
}
/*--------------------------------------------------------------------------*/
void
*
CudaUVMAllocator
::
allocate
(
size_t
size
)
{
#if defined( CUDA_VERSION ) && ( 6000 <= CUDA_VERSION )
void
*
ptr
=
NULL
;
CUDA_SAFE_CALL
(
cudaMallocManaged
(
&
ptr
,
size
,
cudaMemAttachGlobal
)
);
return
ptr
;
#else
throw_runtime_exception
(
"CUDA VERSION does not support UVM"
);
return
NULL
;
#endif
}
void
CudaUVMAllocator
::
deallocate
(
void
*
ptr
,
size_t
/*size*/
)
{
try
{
CUDA_SAFE_CALL
(
cudaFree
(
ptr
)
);
}
catch
(...)
{}
}
void
*
CudaUVMAllocator
::
reallocate
(
void
*
old_ptr
,
size_t
old_size
,
size_t
new_size
)
{
void
*
ptr
=
old_ptr
;
if
(
old_size
!=
new_size
)
{
ptr
=
allocate
(
new_size
);
size_t
copy_size
=
old_size
<
new_size
?
old_size
:
new_size
;
CUDA_SAFE_CALL
(
cudaMemcpy
(
ptr
,
old_ptr
,
copy_size
,
cudaMemcpyDefault
)
);
deallocate
(
old_ptr
,
old_size
);
}
return
ptr
;
}
/*--------------------------------------------------------------------------*/
void
*
CudaHostAllocator
::
allocate
(
size_t
size
)
{
void
*
ptr
=
NULL
;
CUDA_SAFE_CALL
(
cudaHostAlloc
(
&
ptr
,
size
,
cudaHostAllocDefault
)
);
return
ptr
;
}
void
CudaHostAllocator
::
deallocate
(
void
*
ptr
,
size_t
/*size*/
)
{
try
{
CUDA_SAFE_CALL
(
cudaFreeHost
(
ptr
)
);
}
catch
(...)
{}
}
void
*
CudaHostAllocator
::
reallocate
(
void
*
old_ptr
,
size_t
old_size
,
size_t
new_size
)
{
void
*
ptr
=
old_ptr
;
if
(
old_size
!=
new_size
)
{
ptr
=
allocate
(
new_size
);
size_t
copy_size
=
old_size
<
new_size
?
old_size
:
new_size
;
CUDA_SAFE_CALL
(
cudaMemcpy
(
ptr
,
old_ptr
,
copy_size
,
cudaMemcpyHostToHost
)
);
deallocate
(
old_ptr
,
old_size
);
}
return
ptr
;
}
/*--------------------------------------------------------------------------*/
}}
// namespace Kokkos::Impl
#endif
//KOKKOS_HAVE_CUDA
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