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* Tidy statistics collectionJonathan Peyton2015-08-111-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This removes some statistics counters and timers which were not used, adds new counters and timers for some language features that were not monitored previously and separates the counters and timers into those which are of interest for investigating user code and those which are only of interest to the developer of the runtime itself. The runtime developer statistics are now ony collected if the additional #define KMP_DEVELOPER_STATS is set. Additional user statistics which are now collected include: * Count of nested parallelism (omp parallel inside a parallel region) * Count of omp distribute occurrences * Count of omp teams occurrences * Counts of task related statistics (taskyield, task execution, task cancellation, task steal) * Values passed to omp_set_numtheads * Time spent in omp single and omp master None of this affects code compiled without stats gathering enabled, which is the normal library build mode. This also fixes the CMake build by linking to the standard c++ library when building the stats library as it is a requirement. The normal library does not have this requirement and its link phase is left alone. Differential Revision: http://reviews.llvm.org/D11759 llvm-svn: 244677
* Remove use of assignment to multiple struct fields using .fieldname (OMPT)Jonathan Peyton2015-06-291-6/+4
| | | | | | | | | | | Remove use of assignment to multiple struct fields using .fieldname syntax. This doesn't work with gcc 4.8 and earlier. Replace with elementwise field assignments. Patch by John Mellor-Crummey Differential Revision: http://reviews.llvm.org/D10798 llvm-svn: 240972
* Remove unused variable warnings by deletion.Jonathan Peyton2015-06-081-2/+1
| | | | | | | | | | As an ongoing effort to sanitize the openmp code, these changes delete variables that aren't used at all. http://lists.cs.uiuc.edu/pipermail/openmp-dev/2015-June/000701.html Patch by Jack Howarth llvm-svn: 239334
* Remove unused variable warnings by fooling compiler.Jonathan Peyton2015-06-081-6/+16
| | | | | | | | | | Some variables are convenient to keep around even if they aren't really used in a release build. This is often seen in DEBUG guarded code where the variable is only used in a DEBUG build. Patch by Jack Howarth llvm-svn: 239326
* Remove conditional parameters from KA_TRACE macro.Jonathan Peyton2015-06-031-3/+6
| | | | | | | | | It's undefined behavior to have arguments to macros be conditionally preprocessed. http://lists.cs.uiuc.edu/pipermail/openmp-dev/2015-June/000669.html Patch by Jack Howarth and Jonathan Peyton llvm-svn: 238950
* Fix spelling errorsJonathan Peyton2015-05-221-2/+2
| | | | | | These spelling errors are in comments and some debug messages. llvm-svn: 238060
* One line fix - bug with final clause of task constructJonathan Peyton2015-05-211-1/+1
| | | | | | Should be looking at parent_task->td_flags.final instead of the recently allocated task. llvm-svn: 237959
* D9306 omp 4.1 async offload support (partial): code changesAndrey Churbanov2015-05-071-17/+335
| | | | llvm-svn: 236753
* These are the actual changes in the runtime to issue OMPT-related functions. ↵Andrey Churbanov2015-04-291-0/+70
| | | | | | All of them are surrounded by #if OMPT_SUPPORT and can be disabled (which is the default). llvm-svn: 236122
* This patch contains the new files for OMPT and the needed changes to the ↵Andrey Churbanov2015-04-291-0/+24
| | | | | | build infrastructure llvm-svn: 236117
* Replace some unsafe API calls with safe alternatives on Windows, prepare ↵Andrey Churbanov2015-04-021-2/+3
| | | | | | code for similar actions on other platforms - wrap unsafe API calls into macros. llvm-svn: 233915
* The usage of tt_state flag is replaced by an array of two task_team pointers.Andrey Churbanov2015-02-101-58/+33
| | | | llvm-svn: 228718
* Comments only: removing the Revision and Date svn variables from the top of ↵Andrey Churbanov2015-01-271-2/+0
| | | | | | all the source files. llvm-svn: 227207
* added support for PPC architectures (version 3): initial patch provided by ↵Andrey Churbanov2015-01-191-1/+1
| | | | | | Carlo Bertolli, latest version from Johnny Peyton llvm-svn: 226479
* Two fixes sent by C.Bergstrom: MB() does real synch for ARM; _Quad is not ↵Andrey Churbanov2015-01-191-1/+1
| | | | | | used when not available. llvm-svn: 226464
* I apologise in advance for the size of this check-in. At Intel we doJim Cownie2014-10-071-101/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | understand that this is not friendly, and are working to change our internal code-development to make it easier to make development features available more frequently and in finer (more functional) chunks. Unfortunately we haven't got that in place yet, and unpicking this into multiple separate check-ins would be non-trivial, so please bear with me on this one. We should be better in the future. Apologies over, what do we have here? GGC 4.9 compatibility -------------------- * We have implemented the new entrypoints used by code compiled by GCC 4.9 to implement the same functionality in gcc 4.8. Therefore code compiled with gcc 4.9 that used to work will continue to do so. However, there are some other new entrypoints (associated with task cancellation) which are not implemented. Therefore user code compiled by gcc 4.9 that uses these new features will not link against the LLVM runtime. (It remains unclear how to handle those entrypoints, since the GCC interface has potentially unpleasant performance implications for join barriers even when cancellation is not used) --- new parallel entry points --- new entry points that aren't OpenMP 4.0 related These are implemented fully :- GOMP_parallel_loop_dynamic() GOMP_parallel_loop_guided() GOMP_parallel_loop_runtime() GOMP_parallel_loop_static() GOMP_parallel_sections() GOMP_parallel() --- cancellation entry points --- Currently, these only give a runtime error if OMP_CANCELLATION is true because our plain barriers don't check for cancellation while waiting GOMP_barrier_cancel() GOMP_cancel() GOMP_cancellation_point() GOMP_loop_end_cancel() GOMP_sections_end_cancel() --- taskgroup entry points --- These are implemented fully. GOMP_taskgroup_start() GOMP_taskgroup_end() --- target entry points --- These are empty (as they are in libgomp) GOMP_target() GOMP_target_data() GOMP_target_end_data() GOMP_target_update() GOMP_teams() Improvements in Barriers and Fork/Join -------------------------------------- * Barrier and fork/join code is now in its own file (which makes it easier to understand and modify). * Wait/release code is now templated and in its own file; suspend/resume code is also templated * There's a new, hierarchical, barrier, which exploits the cache-hierarchy of the Intel(r) Xeon Phi(tm) coprocessor to improve fork/join and barrier performance. ***BEWARE*** the new source files have *not* been added to the legacy Cmake build system. If you want to use that fixes wil be required. Statistics Collection Code -------------------------- * New code has been added to collect application statistics (if this is enabled at library compile time; by default it is not). The statistics code itself is generally useful, the lightweight timing code uses the X86 rdtsc instruction, so will require changes for other architectures. The intent of this code is not for users to tune their codes but rather 1) For timing code-paths inside the runtime 2) For gathering general properties of OpenMP codes to focus attention on which OpenMP features are most used. Nested Hot Teams ---------------- * The runtime now maintains more state to reduce the overhead of creating and destroying inner parallel teams. This improves the performance of code that repeatedly uses nested parallelism with the same resource allocation. Set the new KMP_HOT_TEAMS_MAX_LEVEL envirable to a depth to enable this (and, of course, OMP_NESTED=true to enable nested parallelism at all). Improved Intel(r) VTune(Tm) Amplifier support --------------------------------------------- * The runtime provides additional information to Vtune via the itt_notify interface to allow it to display better OpenMP specific analyses of load-imbalance. Support for OpenMP Composite Statements --------------------------------------- * Implement new entrypoints required by some of the OpenMP 4.1 composite statements. Improved ifdefs --------------- * More separation of concepts ("Does this platform do X?") from platforms ("Are we compiling for platform Y?"), which should simplify future porting. ScaleMP* contribution --------------------- Stack padding to improve the performance in their environment where cross-node coherency is managed at the page level. Redesign of wait and release code --------------------------------- The code is simplified and performance improved. Bug Fixes --------- *Fixes for Windows multiple processor groups. *Fix Fortran module build on Linux: offload attribute added. *Fix entry names for distribute-parallel-loop construct to be consistent with the compiler codegen. *Fix an inconsistent error message for KMP_PLACE_THREADS environment variable. llvm-svn: 219214
* Fix typosAlp Toker2014-02-241-1/+1
| | | | llvm-svn: 202018
* For your Christmas hacking pleasure.Jim Cownie2013-12-231-42/+72
| | | | | | | | | | | | | | | | | This release use aligns with Intel(r) Composer XE 2013 SP1 Product Update 2 New features * The library can now be built with clang (though wiht some limitations since clang does not support 128 bit floats) * Support for Vtune analysis of load imbalance * Code contribution from Steven Noonan to build the runtime for ARM* architecture processors * First implementation of runtime API for OpenMP cancellation Bug Fixes * Fixed hang on Windows (only) when using KMP_BLOCKTIME=0 llvm-svn: 197914
* First attempt to import OpenMP runtimeJim Cownie2013-09-271-0/+2383
llvm-svn: 191506
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