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[stats] add stats-gathering for static_steal scheduling method 

Add counter to count number of static_steal for loops
Add counter for number of chunks executed per static_steal for loop
Add counter for number of chunks stolen per static_steal for loop

llvm-svn: 295461
This commit is contained in:
Jonathan Peyton 2017-02-17 17:06:16 +00:00
parent f2a345c8ee
commit 12ecbb35eb
2 changed files with 8 additions and 0 deletions
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5
openmp/runtime/src/kmp_dispatch.cpp
View File

@ -826,6 +826,7 @@ __kmp_dispatch_init(
ntc = (tc % chunk ? 1 : 0) + tc / chunk;
if ( nproc > 1 && ntc >= nproc ) {
KMP_COUNT_BLOCK(OMP_FOR_static_steal);
T id = __kmp_tid_from_gtid(gtid);
T small_chunk, extras;
@ -1637,8 +1638,10 @@ __kmp_dispatch_next(
}
// stealing succeded, reduce victim's ub by 1/4 of undone chunks or by 1
if( remaining > 3 ) {
KMP_COUNT_VALUE(FOR_static_steal_stolen, remaining>>2);
init = ( victim->u.p.ub -= (remaining>>2) ); // steal 1/4 of remaining
} else {
KMP_COUNT_VALUE(FOR_static_steal_stolen, 1);
init = ( victim->u.p.ub -= 1 ); // steal 1 chunk of 2 or 3 remaining
}
__kmp_release_lock(lck, gtid);
@ -1739,6 +1742,7 @@ __kmp_dispatch_next(
*VOLATILE_CAST(kmp_int64 *)&vold.b,
*VOLATILE_CAST(kmp_int64 *)&vnew.b ) ) {
// stealing succedded
KMP_COUNT_VALUE(FOR_static_steal_stolen, vold.p.ub-vnew.p.ub);
status = 1;
while_index = 0;
// now update own count and ub
@ -1765,6 +1769,7 @@ __kmp_dispatch_next(
init *= chunk;
limit = chunk + init - 1;
incr = pr->u.p.st;
KMP_COUNT_VALUE(FOR_static_steal_chunks, 1);
KMP_DEBUG_ASSERT(init <= trip);
if ( (last = (limit >= trip)) != 0 )

3
openmp/runtime/src/kmp_stats.h
View File

@ -89,6 +89,7 @@ enum stats_state_e {
macro (OMP_PARALLEL, stats_flags_e::onlyInMaster | stats_flags_e::noTotal, arg) \
macro (OMP_NESTED_PARALLEL, 0, arg) \
macro (OMP_FOR_static, 0, arg) \
macro (OMP_FOR_static_steal, 0, arg) \
macro (OMP_FOR_dynamic, 0, arg) \
macro (OMP_DISTRIBUTE, 0, arg) \
macro (OMP_BARRIER, 0, arg) \
@ -146,6 +147,8 @@ enum stats_state_e {
macro (OMP_PARALLEL_args, stats_flags_e::noUnits | stats_flags_e::noTotal, arg) \
macro (FOR_static_iterations, stats_flags_e::noUnits | stats_flags_e::noTotal, arg) \
macro (FOR_dynamic_iterations,stats_flags_e::noUnits | stats_flags_e::noTotal, arg) \
macro (FOR_static_steal_stolen,stats_flags_e::noUnits | stats_flags_e::noTotal, arg) \
macro (FOR_static_steal_chunks,stats_flags_e::noUnits | stats_flags_e::noTotal, arg) \
KMP_FOREACH_DEVELOPER_TIMER(macro, arg)