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* Change source files from .c to .cppJonathan Peyton2016-12-141-1772/+0
| | | | | | | | Patch by Hansang Bae Differential Revision: https://reviews.llvm.org/D26688 llvm-svn: 289732
* Cleanup: memory leaks on warnings printing fixed; some memory freeing ↵Andrey Churbanov2016-11-281-1/+5
| | | | | | | | | | cleaned; poor indents and one typo fixed. Patch by Victor Campos. Differential Revision: https://reviews.llvm.org/D26786 llvm-svn: 288054
* Introduce dynamic affinity dispatch capabilitiesJonathan Peyton2016-11-141-231/+8
| | | | | | | | | | | | | | | | | | | | | | | | | This set of changes enables the affinity interface (Either the preexisting native operating system or HWLOC) to be dynamically set at runtime initialization. The point of this change is that we were seeing performance degradations when using HWLOC. This allows the user to use the old affinity mechanisms which on large machines (>64 cores) makes a large difference in initialization time. These changes mostly move affinity code under a small class hierarchy: KMPAffinity class Mask {} KMPNativeAffinity : public KMPAffinity class Mask : public KMPAffinity::Mask KMPHwlocAffinity class Mask : public KMPAffinity::Mask Since all interface functions (for both affinity and the mask implementation) are virtual, the implementation can be chosen at runtime initialization. Differential Revision: https://reviews.llvm.org/D26356 llvm-svn: 286890
* Disable monitor thread creation by default.Jonathan Peyton2016-09-271-0/+17
| | | | | | | | | | | | | This change set disables creation of the monitor thread by default. The global counter maintained by the monitor thread was replaced by logic that uses system time directly, and cyclic yielding on Linux target was also removed since there was no clear benefit of using it. Turning on KMP_USE_MONITOR variable (=1) enables creation of monitor thread again if it is really necessary for some reasons. Differential Revision: https://reviews.llvm.org/D24739 llvm-svn: 282507
* Decouple the kmp_affin_mask_t type from determining if affinity is capableJonathan Peyton2016-09-021-2/+2
| | | | | | | the __kmp_affinity_determine_capable() functions are highly operating system specific. This change has the functions use the type they expect explicitly. llvm-svn: 280538
* Teach OpenMP Library to use Hwloc on WindowsJonathan Peyton2016-06-161-9/+58
| | | | | | | | | | | | | | | | | | | This patch allows a user to enable Hwloc on windows. There are three main changes in here: 1.kmp.h - Move definitions/declarations out of KMP_OS_WINDOWS guard (our windows implementation of affinity) because they need to be defined when KMP_USE_HWLOC is on as well. 2.teach __kmp_set_system_affinity, __kmp_get_system_affinity, __kmp_get_proc_group, and __kmp_affinity_bind_thread how to use hwloc. 3.teach CMake how to include hwloc when building Windows Another minor change in here is to make sure that anything under KMP_USE_HWLOC is also guarded by KMP_AFFINITY_SUPPORTED as well. This is to prevent Mac builds from requiring anything from Hwloc. Differential Revision: http://reviews.llvm.org/D21441 llvm-svn: 272951
* Fix for pthread_setspecific (TLS and shutdown) problemJonathan Peyton2016-04-181-7/+10
| | | | | | | | | | | | | | | Some codes that use TLS fail intermittently because one thread tries to write TLS values after the TLS key has been destroyed by another thread. This happens when one thread executes library shutdown (and destroys TLS keys), while another thread starts to execute the TLS key destructor routine. Before this change, the kmp_init_runtime flag was checked before calling pthread_* TLS functions, but this flag is set to FALSE later than the destruction of the TLS keys, which leads to failure. The fix is to check kmp_init_gtid instead, as this flag is unset *before* the destruction of TLS keys. Differential Revision: http://reviews.llvm.org/D19022 llvm-svn: 266674
* Formatting fixesJonathan Peyton2016-01-271-18/+10
| | | | | | | Removing extraneous { } bracket sections. Unindenting blocks of code as a result. Also removing empty #ifdef KMP_STUB llvm-svn: 258986
* Fixing comments.Jonathan Peyton2016-01-271-5/+0
| | | | | | Removing references to non-existent functions, fixing typos. llvm-svn: 258985
* Removing extra empty linesJonathan Peyton2016-01-271-6/+0
| | | | llvm-svn: 258984
* Prevent monitor thread creation when KMP_BLOCKTIME="infinite"Jonathan Peyton2015-12-181-0/+9
| | | | | | | | | | | When users sets envirable KMP_BLOCKTIME to "infinite" (the time one busy-waits at barrieres, etc.), the monitor thread is not useful and can be ignored. This change prevents the creation of the monitor thread when the users sets KMP_BLOCKTIME to "infinite". Differential Revision: http://reviews.llvm.org/D15628 llvm-svn: 256061
* Fixes to wait-loop codeJonathan Peyton2015-11-091-2/+3
| | | | | | | | | | | | | 1) Add get_ptr_type() method to all wait flag types. 2) Flag in sleep_loc may change type by the time the resume is called from __kmp_null_resume_wrapper. We use get_ptr_type to obtain the real type and compare it to the casted object received. If they don't match, we know the flag has changed (already resumed and replaced by another flag). If they match, it doesn't hurt to go ahead and resume it. Differential Revision: http://reviews.llvm.org/D14458 llvm-svn: 252487
* Remove unused caller_gtid variable in both z_Linux_util.c and ↵Jonathan Peyton2015-08-261-1/+0
| | | | | | z_Windows_NT_util.c llvm-svn: 246059
* Fix some sign compare warnings.Jonathan Peyton2015-06-041-1/+1
| | | | | | | | | This change changes kmp_bstate.old_tid to sign integer instead of unsigned integer. It also defines two new macros KMP_NSEC_PER_SEC and KMP_USEC_PER_SEC which lets us take control of the sign (we want them to be longs). Also, in kmp_wait_release.h, the byteref() function's return type is changed from char to unsigned char. llvm-svn: 239057
* Change macro GUIDEDLL_EXPORTS to KMP_DYNAMIC_LIBJonathan Peyton2015-05-261-2/+2
| | | | | | | | | | A while back, Hal suggested updating the GUIDEDLL_EXPORTS macro guard to a more descriptive name. It represents a dynamic library build so KMP_DYNAMIC_LIB is a more suitable name. Differential Revision: http://reviews.llvm.org/D9899 llvm-svn: 238221
* Fix spelling errorsJonathan Peyton2015-05-221-1/+1
| | | | | | These spelling errors are in comments and some debug messages. llvm-svn: 238060
* Replace some unsafe API calls with safe alternatives on Windows, prepare ↵Andrey Churbanov2015-04-021-1/+1
| | | | | | code for similar actions on other platforms - wrap unsafe API calls into macros. llvm-svn: 233915
* cleanup: removed unused function __kmp_change_thread_affinity_maskAndrey Churbanov2015-03-101-40/+0
| | | | llvm-svn: 231778
* cleanup: usages of mask size wrapped into macrosAndrey Churbanov2015-03-101-2/+2
| | | | llvm-svn: 231775
* Pin the libiomp5.dll for the lifetime of application, Windows-specificAndrey Churbanov2015-01-291-0/+15
| | | | llvm-svn: 227469
* 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
* Adds some new Windows processor groups trace messagesAndrey Churbanov2015-01-271-1/+11
| | | | llvm-svn: 227203
* Replaces KMP_OS_WINDOWS && KMP_ARCH_X86_64 or any combination of those two ↵Andrey Churbanov2015-01-271-13/+13
| | | | | | options with the feature macro KMP_GROUP_AFFINITY. llvm-svn: 227199
* I apologise in advance for the size of this check-in. At Intel we doJim Cownie2014-10-071-123/+97
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 a problem on Windows machines with >32 processorsJim Cownie2014-09-031-1/+1
| | | | llvm-svn: 217024
* For your Christmas hacking pleasure.Jim Cownie2013-12-231-23/+5
| | | | | | | | | | | | | | | | | 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/+1993
llvm-svn: 191506
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