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Add gcc unroll optimizations in advPosHalf and calcEnergy #13

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Add gcc unroll optimizations in advPosHalf and calcEnergy #13

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2 changes: 2 additions & 0 deletions src/Hydro.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -318,6 +318,7 @@ void Hydro::advPosHalf(
double dth = 0.5 * dt;

#pragma ivdep
#pragma GCC unroll 2
for (int p = pfirst; p < plast; ++p) {
pxp[p] = px0[p] + pu0[p] * dth;
}
Expand Down Expand Up @@ -478,6 +479,7 @@ void Hydro::calcEnergy(

const double fuzz = 1.e-99;
#pragma ivdep
#pragma GCC unroll 2
for (int z = zfirst; z < zlast; ++z) {
ze[z] = zetot[z] / (zm[z] + fuzz);
}
Expand Down