Impala Documentation

double Impala::Application::GetAverage ( Matrix::Mat * distanceMatrix )

the average is broadcasted over all nodes

Definition at line 355 of file mainPrecomputeKernelMatrix.cpp.

References Impala::Core::Array::Array2dTem< StorT, elemSize, ArithT >::H(), Impala::Core::Array::PixSum(), and Impala::Core::Array::Array2dTem< StorT, elemSize, ArithT >::W().

Referenced by mainPrecomputeKernelMatrix().

00356 {
00357     double average;
00358     average = Array::PixSum(distanceMatrix);
00359     average = Link::Mpi::AllReduceSum(average);
00360     int pixcount = distanceMatrix->W() * distanceMatrix->H();
00361     pixcount = Link::Mpi::AllReduceSum(pixcount);
00362     average /= pixcount;
00363     return average;
00364 }

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