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fix in number of threads calc for multigrid engine

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This commit is contained in:
Thorsten Liebig 2010-09-08 16:57:10 +02:00
parent 8d657430c0
commit e3c0805ad9
1 changed files with 2 additions and 2 deletions
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4
FDTD/operator_cylindermultigrid.cpp
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@ -127,8 +127,8 @@ void Operator_CylinderMultiGrid::Init()
void Operator_CylinderMultiGrid::CalcStartStopLines(unsigned int &numThreads, vector<unsigned int> &start, vector<unsigned int> &stop) const void Operator_CylinderMultiGrid::CalcStartStopLines(unsigned int &numThreads, vector<unsigned int> &start, vector<unsigned int> &stop) const
{ {
if (numLines[0]<numThreads) //in case more threads requested as lines in r-direction, reduce number of worker threads if ((numLines[0] - m_Split_Pos + 1)<numThreads) //in case more threads requested as lines in r-direction, reduce number of worker threads
numThreads = numLines[0]; numThreads = numLines[0] - m_Split_Pos + 1;
unsigned int linesPerThread = round((float)(numLines[0] - m_Split_Pos + 1) / (float)numThreads); unsigned int linesPerThread = round((float)(numLines[0] - m_Split_Pos + 1) / (float)numThreads);
if ((numThreads-1) * linesPerThread >= (numLines[0] - m_Split_Pos + 1)) if ((numThreads-1) * linesPerThread >= (numLines[0] - m_Split_Pos + 1))