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Added resources for Usage of Intels Thread Building Blocks

Implemented multithreading using TBB inside of GMM for usage in Sparse Matrix Multiplication against Dense Vectors
Usage: #define GMM_USE_TBB to enable TBB, additionally define GMM_USE_TBB_FOR_INNER to enable multithreading for EACH row (only feasible of the number of NNZ per Row is large - as in near dense)
tempestpy_adaptions
PBerger 12 years ago
parent
commit
5cdfba685e
  1. 13
      CMakeLists.txt
  2. 138
      resources/3rdparty/gmm-4.2/include/gmm/gmm_blas.h
  3. 280
      resources/cmake/FindTBB.cmake

13
CMakeLists.txt

@ -120,6 +120,9 @@ source_group(Sources FILES ${STORM_TEST_SOURCES})
include_directories("${PROJECT_SOURCE_DIR}")
include_directories("${PROJECT_SOURCE_DIR}/src")
# Add the resources/cmake folder to Module Search Path for FindTBB.cmake
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/resources/cmake/")
# Set required external packages
find_package(Threads REQUIRED)
find_package(Doxygen REQUIRED)
@ -127,6 +130,7 @@ set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME OFF)
find_package(Boost REQUIRED COMPONENTS program_options)
find_package(TBB)
if(Boost_FOUND)
if ((NOT Boost_LIBRARY_DIRS) OR ("${Boost_LIBRARY_DIRS}" STREQUAL ""))
@ -140,6 +144,13 @@ if(Boost_FOUND)
link_directories(${Boost_LIBRARY_DIRS})
endif(Boost_FOUND)
# Intels Thread Building Blocks
if (TBB_FOUND)
message(STATUS "Found TBB with Interface Version ${TBB_INTERFACE_VERSION}")
include_directories(${TBB_INCLUDE_DIRS})
link_directories(${TBB_LIBRARY_DIRS})
endif(TBB_FOUND)
# Add Eigen to the included directories
include_directories(${EIGEN3_INCLUDE_DIR})
@ -173,6 +184,8 @@ if (STORM_USE_COTIRE)
#cotire(storm-tests)
endif()
# Add a target to generate API documentation with Doxygen
if(DOXYGEN_FOUND)
set(CMAKE_DOXYGEN_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/doc")

138
resources/3rdparty/gmm-4.2/include/gmm/gmm_blas.h

@ -394,13 +394,79 @@ namespace gmm {
return res;
}
#ifdef GMM_USE_TBB
#include "tbb/tbb.h"
#include <iterator>
/* Official Intel Hint on blocked_range vs. linear iterators: http://software.intel.com/en-us/forums/topic/289505
*/
template <typename IT1>
class forward_range {
IT1 my_begin;
IT1 my_end;
size_t my_size;
public:
IT1 begin() const {return my_begin;}
IT1 end() const {return my_end;}
bool empty() const {return my_begin==my_end;}
bool is_divisible() const {return my_size>1;}
forward_range( IT1 first, IT1 last, size_t size ) : my_begin(first), my_end(last), my_size(size) {
assert( size==size_t(std::distance( first,last )));
}
forward_range( IT1 first, IT1 last) : my_begin(first), my_end(last) {
my_size = std::distance( first,last );
}
forward_range( forward_range& r, tbb::split ) {
size_t h = r.my_size/2;
my_end = r.my_end;
my_begin = r.my_begin;
std::advance( my_begin, h ); // Might be scaling issue
my_size = r.my_size-h;
r.my_end = my_begin;
r.my_size = h;
}
};
template <typename IT1, typename V>
class tbbHelper_vect_sp_sparse {
V const* my_v;
public:
typename strongest_numeric_type<typename std::iterator_traits<IT1>::value_type,
typename linalg_traits<V>::value_type>::T my_sum;
void operator()( const forward_range<IT1>& r ) {
V const* v = my_v;
typename strongest_numeric_type<typename std::iterator_traits<IT1>::value_type,
typename linalg_traits<V>::value_type>::T sum = my_sum;
IT1 end = r.end();
for( IT1 i=r.begin(); i!=end; ++i) {
sum += (*i) * v->at(i.index());
}
my_sum = sum;
}
tbbHelper_vect_sp_sparse( tbbHelper_vect_sp_sparse& x, tbb::split ) : my_v(x.my_v), my_sum(0) {}
void join( const tbbHelper_vect_sp_sparse& y ) {my_sum+=y.my_sum;}
tbbHelper_vect_sp_sparse(V const* v) :
my_v(v), my_sum(0)
{}
};
#endif
template <typename IT1, typename V> inline
typename strongest_numeric_type<typename std::iterator_traits<IT1>::value_type,
typename linalg_traits<V>::value_type>::T
vect_sp_sparse_(IT1 it, IT1 ite, const V &v) {
typename strongest_numeric_type<typename std::iterator_traits<IT1>::value_type,
typename linalg_traits<V>::value_type>::T res(0);
#if defined(GMM_USE_TBB) && defined(GMM_USE_TBB_FOR_INNER)
tbbHelper_vect_sp_sparse<IT1, V> tbbHelper(&v);
tbb::parallel_reduce(forward_range<IT1>(it, ite), tbbHelper);
res = tbbHelper.my_sum;
#else
for (; it != ite; ++it) res += (*it) * v[it.index()];
#endif
return res;
}
@ -1678,15 +1744,85 @@ namespace gmm {
}
}
#ifdef GMM_USE_TBB
/* Official Intel Hint on blocked_range vs. linear iterators: http://software.intel.com/en-us/forums/topic/289505
*/
template <typename IT1, typename IT2>
class forward_range_mult {
IT1 my_begin;
IT1 my_end;
IT2 my_begin_row;
size_t my_size;
public:
IT1 begin() const {return my_begin;}
IT2 begin_row() const {return my_begin_row;}
IT1 end() const {return my_end;}
bool empty() const {return my_begin==my_end;}
bool is_divisible() const {return my_size>1;}
forward_range_mult( IT1 first, IT1 last, IT2 row_first, size_t size ) : my_begin(first), my_end(last), my_begin_row(row_first), my_size(size) {
assert( size==size_t(std::distance( first,last )));
}
forward_range_mult( IT1 first, IT1 last, IT2 row_first) : my_begin(first), my_end(last), my_begin_row(row_first) {
my_size = std::distance( first,last );
}
forward_range_mult( forward_range_mult& r, tbb::split ) {
size_t h = r.my_size/2;
my_end = r.my_end;
my_begin = r.my_begin;
my_begin_row = r.my_begin_row;
std::advance( my_begin, h ); // Might be scaling issue
std::advance( my_begin_row, h );
my_size = r.my_size-h;
r.my_end = my_begin;
r.my_size = h;
}
};
template <typename L1, typename L2, typename L3>
class tbbHelper_mult_by_row {
L2 const* my_l2;
// Typedefs for Iterator Types
typedef typename linalg_traits<L3>::iterator frm_IT1;
typedef typename linalg_traits<L1>::const_row_iterator frm_IT2;
public:
void operator()( const forward_range_mult<frm_IT1, frm_IT2>& r ) const {
L2 const& l2 = *my_l2;
frm_IT1 it = r.begin();
frm_IT1 ite = r.end();
frm_IT2 itr = r.begin_row();
for (; it != ite; ++it, ++itr) {
*it = vect_sp(linalg_traits<L1>::row(itr), l2,
typename linalg_traits<L1>::storage_type(),
typename linalg_traits<L2>::storage_type());
}
}
tbbHelper_mult_by_row(L2 const* l2) :
my_l2(l2)
{}
};
#endif
template <typename L1, typename L2, typename L3>
void mult_by_row(const L1& l1, const L2& l2, L3& l3, abstract_dense) {
typename linalg_traits<L3>::iterator it=vect_begin(l3), ite=vect_end(l3);
typename linalg_traits<L1>::const_row_iterator
itr = mat_row_const_begin(l1);
for (; it != ite; ++it, ++itr)
#ifdef GMM_USE_TBB
tbb::parallel_for(forward_range_mult<typename linalg_traits<L3>::iterator, typename linalg_traits<L1>::const_row_iterator>(it, ite, itr), tbbHelper_mult_by_row<L1, L2, L3>(&l2));
#else
for (; it != ite; ++it, ++itr)
*it = vect_sp(linalg_traits<L1>::row(itr), l2,
typename linalg_traits<L1>::storage_type(),
typename linalg_traits<L2>::storage_type());
#endif
}
template <typename L1, typename L2, typename L3>

280
resources/cmake/FindTBB.cmake

@ -0,0 +1,280 @@
# FindTBB.cmake can be found at https://code.google.com/p/findtbb/
# Written by Hannes Hofmann &lt;hannes.hofmann _at_ informatik.uni-erlangen.de&gt;
# Improvements by Gino van den Bergen &lt;gino _at_ dtecta.com&gt;,
# Florian Uhlig &lt;F.Uhlig _at_ gsi.de&gt;,
# Jiri Marsik &lt;jiri.marsik89 _at_ gmail.com&gt;
# The MIT License
#
# Copyright (c) 2011 Hannes Hofmann
#
# 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
# copies 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
# IMPLIED, 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 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# GvdB: This module uses the environment variable TBB_ARCH_PLATFORM which defines architecture and compiler.
# e.g. "ia32/vc8" or "em64t/cc4.1.0_libc2.4_kernel2.6.16.21"
# TBB_ARCH_PLATFORM is set by the build script tbbvars[.bat|.sh|.csh], which can be found
# in the TBB installation directory (TBB_INSTALL_DIR).
#
# GvdB: Mac OS X distribution places libraries directly in lib directory.
#
# For backwards compatibility, you may explicitely set the CMake variables TBB_ARCHITECTURE and TBB_COMPILER.
# TBB_ARCHITECTURE [ ia32 | em64t | itanium ]
# which architecture to use
# TBB_COMPILER e.g. vc9 or cc3.2.3_libc2.3.2_kernel2.4.21 or cc4.0.1_os10.4.9
# which compiler to use (detected automatically on Windows)
# This module respects
# TBB_INSTALL_DIR or $ENV{TBB21_INSTALL_DIR} or $ENV{TBB_INSTALL_DIR}
# This module defines
# TBB_INCLUDE_DIRS, where to find task_scheduler_init.h, etc.
# TBB_LIBRARY_DIRS, where to find libtbb, libtbbmalloc
# TBB_DEBUG_LIBRARY_DIRS, where to find libtbb_debug, libtbbmalloc_debug
# TBB_INSTALL_DIR, the base TBB install directory
# TBB_LIBRARIES, the libraries to link against to use TBB.
# TBB_DEBUG_LIBRARIES, the libraries to link against to use TBB with debug symbols.
# TBB_FOUND, If false, don't try to use TBB.
# TBB_INTERFACE_VERSION, as defined in tbb/tbb_stddef.h
if (WIN32)
# has em64t/vc8 em64t/vc9
# has ia32/vc7.1 ia32/vc8 ia32/vc9
set(_TBB_DEFAULT_INSTALL_DIR "C:/Program Files/Intel/TBB" "C:/Program Files (x86)/Intel/TBB" "C:/Program Files (x86)/Intel/Composer XE 2013/tbb")
set(_TBB_LIB_NAME "tbb")
set(_TBB_LIB_MALLOC_NAME "${_TBB_LIB_NAME}malloc")
set(_TBB_LIB_DEBUG_NAME "${_TBB_LIB_NAME}_debug")
set(_TBB_LIB_MALLOC_DEBUG_NAME "${_TBB_LIB_MALLOC_NAME}_debug")
if (MSVC71)
set (_TBB_COMPILER "vc7.1")
endif(MSVC71)
if (MSVC80)
set(_TBB_COMPILER "vc8")
endif(MSVC80)
if (MSVC90)
set(_TBB_COMPILER "vc9")
endif(MSVC90)
if(MSVC10)
set(_TBB_COMPILER "vc10")
endif(MSVC10)
if(MSVC11)
set(_TBB_COMPILER "vc11")
endif(MSVC11)
# Todo: add other Windows compilers such as ICL.
set(_TBB_ARCHITECTURE ${TBB_ARCHITECTURE})
endif (WIN32)
if (UNIX)
if (APPLE)
# MAC
set(_TBB_DEFAULT_INSTALL_DIR "/Library/Frameworks/Intel_TBB.framework/Versions")
# libs: libtbb.dylib, libtbbmalloc.dylib, *_debug
set(_TBB_LIB_NAME "tbb")
set(_TBB_LIB_MALLOC_NAME "${_TBB_LIB_NAME}malloc")
set(_TBB_LIB_DEBUG_NAME "${_TBB_LIB_NAME}_debug")
set(_TBB_LIB_MALLOC_DEBUG_NAME "${_TBB_LIB_MALLOC_NAME}_debug")
# default flavor on apple: ia32/cc4.0.1_os10.4.9
# Jiri: There is no reason to presume there is only one flavor and
# that user's setting of variables should be ignored.
if(NOT TBB_COMPILER)
set(_TBB_COMPILER "cc4.0.1_os10.4.9")
elseif (NOT TBB_COMPILER)
set(_TBB_COMPILER ${TBB_COMPILER})
endif(NOT TBB_COMPILER)
if(NOT TBB_ARCHITECTURE)
set(_TBB_ARCHITECTURE "ia32")
elseif(NOT TBB_ARCHITECTURE)
set(_TBB_ARCHITECTURE ${TBB_ARCHITECTURE})
endif(NOT TBB_ARCHITECTURE)
else (APPLE)
# LINUX
set(_TBB_DEFAULT_INSTALL_DIR "/opt/intel/tbb" "/usr/local/include" "/usr/include")
set(_TBB_LIB_NAME "tbb")
set(_TBB_LIB_MALLOC_NAME "${_TBB_LIB_NAME}malloc")
set(_TBB_LIB_DEBUG_NAME "${_TBB_LIB_NAME}_debug")
set(_TBB_LIB_MALLOC_DEBUG_NAME "${_TBB_LIB_MALLOC_NAME}_debug")
# has em64t/cc3.2.3_libc2.3.2_kernel2.4.21 em64t/cc3.3.3_libc2.3.3_kernel2.6.5 em64t/cc3.4.3_libc2.3.4_kernel2.6.9 em64t/cc4.1.0_libc2.4_kernel2.6.16.21
# has ia32/*
# has itanium/*
set(_TBB_COMPILER ${TBB_COMPILER})
set(_TBB_ARCHITECTURE ${TBB_ARCHITECTURE})
endif (APPLE)
endif (UNIX)
if (CMAKE_SYSTEM MATCHES "SunOS.*")
# SUN
# not yet supported
# has em64t/cc3.4.3_kernel5.10
# has ia32/*
endif (CMAKE_SYSTEM MATCHES "SunOS.*")
#-- Clear the public variables
set (TBB_FOUND "NO")
#-- Find TBB install dir and set ${_TBB_INSTALL_DIR} and cached ${TBB_INSTALL_DIR}
# first: use CMake variable TBB_INSTALL_DIR
if (TBB_INSTALL_DIR)
set (_TBB_INSTALL_DIR ${TBB_INSTALL_DIR})
endif (TBB_INSTALL_DIR)
# second: use environment variable
if (NOT _TBB_INSTALL_DIR)
if (NOT "$ENV{TBB_INSTALL_DIR}" STREQUAL "")
set (_TBB_INSTALL_DIR $ENV{TBB_INSTALL_DIR})
endif (NOT "$ENV{TBB_INSTALL_DIR}" STREQUAL "")
# Intel recommends setting TBB21_INSTALL_DIR
if (NOT "$ENV{TBB21_INSTALL_DIR}" STREQUAL "")
set (_TBB_INSTALL_DIR $ENV{TBB21_INSTALL_DIR})
endif (NOT "$ENV{TBB21_INSTALL_DIR}" STREQUAL "")
if (NOT "$ENV{TBB22_INSTALL_DIR}" STREQUAL "")
set (_TBB_INSTALL_DIR $ENV{TBB22_INSTALL_DIR})
endif (NOT "$ENV{TBB22_INSTALL_DIR}" STREQUAL "")
if (NOT "$ENV{TBB30_INSTALL_DIR}" STREQUAL "")
set (_TBB_INSTALL_DIR $ENV{TBB30_INSTALL_DIR})
endif (NOT "$ENV{TBB30_INSTALL_DIR}" STREQUAL "")
endif (NOT _TBB_INSTALL_DIR)
# third: try to find path automatically
if (NOT _TBB_INSTALL_DIR)
if (_TBB_DEFAULT_INSTALL_DIR)
set (_TBB_INSTALL_DIR ${_TBB_DEFAULT_INSTALL_DIR})
endif (_TBB_DEFAULT_INSTALL_DIR)
endif (NOT _TBB_INSTALL_DIR)
# sanity check
if (NOT _TBB_INSTALL_DIR)
message ("ERROR: Unable to find Intel TBB install directory. ${_TBB_INSTALL_DIR}")
else (NOT _TBB_INSTALL_DIR)
# finally: set the cached CMake variable TBB_INSTALL_DIR
if (NOT TBB_INSTALL_DIR)
mark_as_advanced(TBB_INSTALL_DIR)
endif (NOT TBB_INSTALL_DIR)
#-- A macro to rewrite the paths of the library. This is necessary, because
# find_library() always found the em64t/vc9 version of the TBB libs
macro(TBB_CORRECT_LIB_DIR var_name)
# if (NOT "${_TBB_ARCHITECTURE}" STREQUAL "em64t")
string(REPLACE em64t "${_TBB_ARCHITECTURE}" ${var_name} ${${var_name}})
# endif (NOT "${_TBB_ARCHITECTURE}" STREQUAL "em64t")
string(REPLACE ia32 "${_TBB_ARCHITECTURE}" ${var_name} ${${var_name}})
string(REPLACE vc7.1 "${_TBB_COMPILER}" ${var_name} ${${var_name}})
string(REPLACE vc8 "${_TBB_COMPILER}" ${var_name} ${${var_name}})
string(REPLACE vc9 "${_TBB_COMPILER}" ${var_name} ${${var_name}})
string(REPLACE vc10 "${_TBB_COMPILER}" ${var_name} ${${var_name}})
string(REPLACE vc11 "${_TBB_COMPILER}" ${var_name} ${${var_name}})
endmacro(TBB_CORRECT_LIB_DIR var_content)
#-- Look for include directory and set ${TBB_INCLUDE_DIR}
set (TBB_INC_SEARCH_DIR ${_TBB_INSTALL_DIR}/include)
# Jiri: tbbvars now sets the CPATH environment variable to the directory
# containing the headers.
find_path(TBB_INCLUDE_DIR tbb/tbb_stddef.h PATHS "${TBB_INC_SEARCH_DIR}" ENV CPATH)
mark_as_advanced(TBB_INCLUDE_DIR)
#-- Look for libraries
# GvdB: $ENV{TBB_ARCH_PLATFORM} is set by the build script tbbvars[.bat|.sh|.csh]
if (NOT $ENV{TBB_ARCH_PLATFORM} STREQUAL "")
set (_TBB_LIBRARY_DIR
${_TBB_INSTALL_DIR}/lib/$ENV{TBB_ARCH_PLATFORM}
${_TBB_INSTALL_DIR}/$ENV{TBB_ARCH_PLATFORM}/lib
)
endif (NOT $ENV{TBB_ARCH_PLATFORM} STREQUAL "")
# Jiri: This block isn't mutually exclusive with the previous one
# (hence no else), instead I test if the user really specified
# the variables in question.
if ((NOT ${TBB_ARCHITECTURE} STREQUAL "") AND (NOT ${TBB_COMPILER} STREQUAL ""))
# HH: deprecated
message(STATUS "[Warning] FindTBB.cmake: The use of TBB_ARCHITECTURE and TBB_COMPILER is deprecated and may not be supported in future versions. Please set \$ENV{TBB_ARCH_PLATFORM} (using tbbvars.[bat|csh|sh]).")
# Jiri: It doesn't hurt to look in more places, so I store the hints from
# ENV{TBB_ARCH_PLATFORM} and the TBB_ARCHITECTURE and TBB_COMPILER
# variables and search them both.
set (_TBB_LIBRARY_DIR "${_TBB_INSTALL_DIR}/${_TBB_ARCHITECTURE}/${_TBB_COMPILER}/lib" ${_TBB_LIBRARY_DIR})
endif ((NOT ${TBB_ARCHITECTURE} STREQUAL "") AND (NOT ${TBB_COMPILER} STREQUAL ""))
# GvdB: Mac OS X distribution places libraries directly in lib directory.
list(APPEND _TBB_LIBRARY_DIR ${_TBB_INSTALL_DIR}/lib)
# Jiri: No reason not to check the default paths. From recent versions,
# tbbvars has started exporting the LIBRARY_PATH and LD_LIBRARY_PATH
# variables, which now point to the directories of the lib files.
# It all makes more sense to use the ${_TBB_LIBRARY_DIR} as a HINTS
# argument instead of the implicit PATHS as it isn't hard-coded
# but computed by system introspection. Searching the LIBRARY_PATH
# and LD_LIBRARY_PATH environment variables is now even more important
# that tbbvars doesn't export TBB_ARCH_PLATFORM and it facilitates
# the use of TBB built from sources.
find_library(TBB_LIBRARY ${_TBB_LIB_NAME} HINTS ${_TBB_LIBRARY_DIR}
PATHS ENV LIBRARY_PATH ENV LD_LIBRARY_PATH)
find_library(TBB_MALLOC_LIBRARY ${_TBB_LIB_MALLOC_NAME} HINTS ${_TBB_LIBRARY_DIR}
PATHS ENV LIBRARY_PATH ENV LD_LIBRARY_PATH)
#Extract path from TBB_LIBRARY name
get_filename_component(TBB_LIBRARY_DIR ${TBB_LIBRARY} PATH)
#TBB_CORRECT_LIB_DIR(TBB_LIBRARY)
#TBB_CORRECT_LIB_DIR(TBB_MALLOC_LIBRARY)
mark_as_advanced(TBB_LIBRARY TBB_MALLOC_LIBRARY)
#-- Look for debug libraries
# Jiri: Changed the same way as for the release libraries.
find_library(TBB_LIBRARY_DEBUG ${_TBB_LIB_DEBUG_NAME} HINTS ${_TBB_LIBRARY_DIR}
PATHS ENV LIBRARY_PATH ENV LD_LIBRARY_PATH)
find_library(TBB_MALLOC_LIBRARY_DEBUG ${_TBB_LIB_MALLOC_DEBUG_NAME} HINTS ${_TBB_LIBRARY_DIR}
PATHS ENV LIBRARY_PATH ENV LD_LIBRARY_PATH)
# Jiri: Self-built TBB stores the debug libraries in a separate directory.
# Extract path from TBB_LIBRARY_DEBUG name
get_filename_component(TBB_LIBRARY_DEBUG_DIR ${TBB_LIBRARY_DEBUG} PATH)
#TBB_CORRECT_LIB_DIR(TBB_LIBRARY_DEBUG)
#TBB_CORRECT_LIB_DIR(TBB_MALLOC_LIBRARY_DEBUG)
mark_as_advanced(TBB_LIBRARY_DEBUG TBB_MALLOC_LIBRARY_DEBUG)
if (TBB_INCLUDE_DIR)
if (TBB_LIBRARY)
set (TBB_FOUND "YES")
set (TBB_LIBRARIES ${TBB_LIBRARY} ${TBB_MALLOC_LIBRARY} ${TBB_LIBRARIES})
set (TBB_DEBUG_LIBRARIES ${TBB_LIBRARY_DEBUG} ${TBB_MALLOC_LIBRARY_DEBUG} ${TBB_DEBUG_LIBRARIES})
set (TBB_INCLUDE_DIRS ${TBB_INCLUDE_DIR} CACHE PATH "TBB include directory" FORCE)
set (TBB_LIBRARY_DIRS ${TBB_LIBRARY_DIR} CACHE PATH "TBB library directory" FORCE)
# Jiri: Self-built TBB stores the debug libraries in a separate directory.
set (TBB_DEBUG_LIBRARY_DIRS ${TBB_LIBRARY_DEBUG_DIR} CACHE PATH "TBB debug library directory" FORCE)
mark_as_advanced(TBB_INCLUDE_DIRS TBB_LIBRARY_DIRS TBB_DEBUG_LIBRARY_DIRS TBB_LIBRARIES TBB_DEBUG_LIBRARIES)
message(STATUS "Found Intel TBB")
endif (TBB_LIBRARY)
endif (TBB_INCLUDE_DIR)
if (NOT TBB_FOUND)
message("ERROR: Intel TBB NOT found!")
message(STATUS "Looked for Threading Building Blocks in ${_TBB_INSTALL_DIR}")
# do only throw fatal, if this pkg is REQUIRED
if (TBB_FIND_REQUIRED)
message(FATAL_ERROR "Could NOT find TBB library.")
endif (TBB_FIND_REQUIRED)
endif (NOT TBB_FOUND)
endif (NOT _TBB_INSTALL_DIR)
if (TBB_FOUND)
set(TBB_INTERFACE_VERSION 0)
FILE(READ "${TBB_INCLUDE_DIRS}/tbb/tbb_stddef.h" _TBB_VERSION_CONTENTS)
STRING(REGEX REPLACE ".*#define TBB_INTERFACE_VERSION ([0-9]+).*" "\\1" TBB_INTERFACE_VERSION "${_TBB_VERSION_CONTENTS}")
set(TBB_INTERFACE_VERSION "${TBB_INTERFACE_VERSION}")
endif (TBB_FOUND)
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