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parallel solver: various changes

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- threading: adding btSequentialImpulseConstraintSolverMt
 - task scheduler: added parallelSum so that parallel solver can compute residuals
 - CommonRigidBodyMTBase: add slider for solver least squares residual and allow multithreading without needing OpenMP, TBB, or PPL
 - taskScheduler: don't wait for workers to sleep/signal at the end of each parallel block
 - parallel solver: convertContacts split into an allocContactConstraints and setupContactConstraints stage, the latter of which is done in parallel
 - parallel solver: rolling friction is now interleaved along with normal friction
 - parallel solver: batchified split impulse solving + some cleanup
 - parallel solver: sorting batches from largest to smallest
 - parallel solver: added parallel batch creation
 - parallel solver: added warmstartingWriteBackContacts func + other cleanup
 - task scheduler: truncate low bits to preserve determinism with parallelSum
 - parallel solver: reducing dynamic mem allocs and trying to parallelize more of the batch setup
 - parallel solver: parallelize updating constraint batch ids for merging
 - parallel solver: adding debug visualization
 - task scheduler: make TBB task scheduler parallelSum deterministic
 - parallel solver: split batch gen code into separate file; allow selection of batch gen method
 - task scheduler: add sleepWorkerThreadsHint() at end of simulation
 - parallel solver: added grain size per phase
 - task Scheduler: fix for strange threading issue; also no need for main thread to wait for workers to sleep
 - base constraint solver: break out joint setup into separate function for profiling/overriding
 - parallel solver: allow different batching method for contacts vs joints
 - base constraint solver: add convertJoint and convertBodies to make it possible to parallelize joint and body conversion
 - parallel solver: convert joints and bodies in parallel now
 - parallel solver: speed up batch creation with run-length encoding
 - parallel solver: batch gen: run-length expansion in parallel; collect constraint info in parallel
 - parallel solver: adding spatial grid batching method
 - parallel solver: enhancements to spatial grid batching
 - sequential solver: moving code for writing back into functions that derived classes can call
 - parallel solver: do write back of bodies and joints in parallel
 - parallel solver: removed all batching methods except for spatial grid (others were ineffective)
 - parallel solver: added 2D or 3D grid batching options; and a bit of cleanup
 - move btDefaultTaskScheduler into LinearMath project
This commit is contained in:
Lunkhound
2017-06-04 17:57:25 -07:00
parent 94bc897067
commit b8720f2161
25 changed files with 5236 additions and 767 deletions
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13
CMakeLists.txt
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@@ -28,14 +28,14 @@ OPTION(USE_GRAPHICAL_BENCHMARK "Use Graphical Benchmark" ON)
OPTION(BUILD_SHARED_LIBS "Use shared libraries" OFF)
OPTION(USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD "Use btSoftMultiBodyDynamicsWorld" ON)
OPTION(BULLET2_USE_THREAD_LOCKS "Build Bullet 2 libraries with mutex locking around certain operations (required for multi-threading)" OFF)
IF (BULLET2_USE_THREAD_LOCKS)
OPTION(BULLET2_MULTITHREADING "Build Bullet 2 libraries with mutex locking around certain operations (required for multi-threading)" OFF)
IF (BULLET2_MULTITHREADING)
OPTION(BULLET2_USE_OPEN_MP_MULTITHREADING "Build Bullet 2 with support for multi-threading with OpenMP (requires a compiler with OpenMP support)" OFF)
OPTION(BULLET2_USE_TBB_MULTITHREADING "Build Bullet 2 with support for multi-threading with Intel Threading Building Blocks (requires the TBB library to be already installed)" OFF)
IF (MSVC)
OPTION(BULLET2_USE_PPL_MULTITHREADING "Build Bullet 2 with support for multi-threading with Microsoft Parallel Patterns Library (requires MSVC compiler)" OFF)
ENDIF (MSVC)
ENDIF (BULLET2_USE_THREAD_LOCKS)
ENDIF (BULLET2_MULTITHREADING)
IF(NOT WIN32)
@@ -225,12 +225,15 @@ IF(USE_GRAPHICAL_BENCHMARK)
ADD_DEFINITIONS( -DUSE_GRAPHICAL_BENCHMARK)
ENDIF (USE_GRAPHICAL_BENCHMARK)
IF(BULLET2_USE_THREAD_LOCKS)
IF(BULLET2_MULTITHREADING)
ADD_DEFINITIONS( -DBT_THREADSAFE=1 )
IF (NOT MSVC)
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
ENDIF (NOT MSVC)
ENDIF (BULLET2_USE_THREAD_LOCKS)
IF (NOT WIN32)
LINK_LIBRARIES( pthread )
ENDIF (NOT WIN32)
ENDIF (BULLET2_MULTITHREADING)
IF (BULLET2_USE_OPEN_MP_MULTITHREADING)
ADD_DEFINITIONS("-DBT_USE_OPENMP=1")