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surround id generator of Index with an OpenMP critical to avoid id collision #131

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surround id generator of Index with an OpenMP critical to avoid id collision #131

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3ce99d0
Merge pull request #1 from ITensor/master
mengsu42 Aug 21, 2017
667ee26
surround id generator in Index with an OpenMP critical to avoid id co…
mengsu42 Aug 21, 2017
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9 changes: 7 additions & 2 deletions itensor/index.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -49,8 +49,13 @@ nameint(string const& f, int n)
Index::id_type Index::
generateID()
{
static Index::IDGenerator G;
return G();
Index::id_type r;
#pragma omp critical
{
static Index::IDGenerator G;
r = G();
}
return r;
}

Index::
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2 changes: 1 addition & 1 deletion options.mk.sample
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Expand Up @@ -7,7 +7,7 @@
##
## Set which compiler to use by defining CCCOM:
## GNU GCC compiler
CCCOM=g++ -m64 -std=c++11 -fPIC
CCCOM=g++ -m64 -std=c++11 -fPIC -fopenmp

## Clang compiler (good to use on Mac OS)
#CCCOM=clang++ -std=c++11 -fPIC
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