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better condition for excluding arrays from parallelization

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This commit is contained in:
mkoch
2023-09-27 20:27:03 +03:00
parent bd17dde9b0
commit 83f5fee8cd
1 changed files with 51 additions and 8 deletions
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59
sapfor/experts/Sapfor_2017/_src/GraphCall/select_array_conf.cpp
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@@ -92,6 +92,48 @@ static void preventLoopsFromParallelizations(LoopGraph* loop, const set<DIST::Ar
}
}
struct DimConf
{
vector<pair<int, int>> dims;
DimConf(DIST::Array* a) : dims(a->GetSizes()) { }
friend bool operator<(const DimConf& l, const DimConf& r) { return l.dims < r.dims; }
};
static map<DimConf, map<FuncInfo*, set<DIST::Array*>>>::const_iterator
pickBest(const map<DimConf, map<FuncInfo*, set<DIST::Array*>>>& arrs)
{
const int undefined = -1;
int max_elems = undefined;
auto best_it = arrs.begin();
for (auto it = arrs.begin(); it != arrs.end(); it++)
{
int elems = 1;
for (const auto& p : it->first.dims)
{
if(p.first >= 0 && p.second >= p.first)
{
elems *= p.second - p.first;
}
else
{
elems = undefined;
break;
}
}
if (elems > max_elems)
{
max_elems = elems;
best_it = it;
}
}
return best_it;
}
void SelectArrayConfForParallelization(SgProject* proj, map<string, vector<FuncInfo*>>& funcByFile,
const map<string, vector<LoopGraph*>>& loopGraph, map<std::string, vector<Directive*>>& createdDirectives,
map<string, vector<Messages>>& allMessages, const map<DIST::Array*, set<DIST::Array*>>& arrayLinksByFuncCalls,
@@ -103,7 +145,7 @@ void SelectArrayConfForParallelization(SgProject* proj, map<string, vector<FuncI
funcByName[byFunc->funcName] = byFunc;
// array(real ref) dims func array in func
map<DIST::Array*, map<int, map<FuncInfo*, set<DIST::Array*>>>> usedArrays;
map<DIST::Array*, map<DimConf, map<FuncInfo*, set<DIST::Array*>>>> usedArrays;
for (const auto& byFile : loopGraph)
{
@@ -154,7 +196,7 @@ void SelectArrayConfForParallelization(SgProject* proj, map<string, vector<FuncI
int num_of_dims = arr->GetDimSize();
for(DIST::Array* ref : realRefs)
usedArrays[ref][num_of_dims][byFunc.first].insert(arr);
usedArrays[ref][DimConf(arr)][byFunc.first].insert(arr);
}
}
}
@@ -166,14 +208,15 @@ void SelectArrayConfForParallelization(SgProject* proj, map<string, vector<FuncI
DIST::Array* realRef = byRealRef.first;
auto& refferedDims = byRealRef.second;
// prevent from parallelization all arrays wich refers realRef and has smaller number of dims
auto bySmallerDimSize = refferedDims.rbegin();
if(bySmallerDimSize != refferedDims.rend())
// prevent from parallelization all configurations except best one
auto best_conf_it = pickBest(refferedDims);
for (auto by_worse_dim_conf_it = refferedDims.begin(); by_worse_dim_conf_it != refferedDims.end(); by_worse_dim_conf_it++)
{
bySmallerDimSize++;
for (; bySmallerDimSize != refferedDims.rend(); bySmallerDimSize++)
if(by_worse_dim_conf_it != best_conf_it)
{
for (const auto& byFunc : bySmallerDimSize->second)
for (const auto& byFunc : by_worse_dim_conf_it->second)
{
FuncInfo* f = byFunc.first;
auto& to_prevent = byFunc.second;