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Fix TENO performance #807

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Merged
merged 2 commits into from
Mar 15, 2025
Merged

Fix TENO performance #807

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3187ee7
fix teno performance
ChrisZYJ Mar 11, 2025
8b8926e
Merge remote-tracking branch 'upstream/master' into fix_teno_speed
ChrisZYJ Mar 11, 2025
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8 changes: 5 additions & 3 deletions src/simulation/m_weno.fpp
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Original file line number Diff line number Diff line change
Expand Up @@ -853,9 +853,10 @@ contains
! Fu, et al. (2016)
! Fu''s code: https://dx.doi.org/10.13140/RG.2.2.36250.34247
tau = abs(beta(2) - beta(0))
alpha = (1._wp + tau/beta)**6._wp ! Equation 22 (reuse alpha as gamma; pick C=1 & q=6)
alpha = 1._wp + tau/beta ! Equation 22 (reuse alpha as gamma; pick C=1 & q=6)
alpha = (alpha*alpha*alpha)**2._wp ! Equation 22 cont. (some CPU compilers cannot optimize x**6.0)
omega = alpha/sum(alpha) ! Equation 25 (reuse omega as xi)
delta = merge(0._wp, 1._wp, omega < teno_CT) ! Equation 26
delta = merge(0._wp, 1._wp, omega < teno_CT)! Equation 26
alpha = delta*d_cbL_${XYZ}$ (:, j) ! Equation 27

end if
Expand Down Expand Up @@ -1036,7 +1037,8 @@ contains

elseif (teno) then
tau = abs(beta(4) - beta(3)) ! Note the reordering of stencils
alpha = (1._wp + tau/beta)**6._wp
alpha = 1._wp + tau/beta
alpha = (alpha*alpha*alpha)**2._wp ! some CPU compilers cannot optimize x**6.0
omega = alpha/sum(alpha)
delta = merge(0._wp, 1._wp, omega < teno_CT)
alpha = delta*d_cbL_${XYZ}$ (:, j)
Expand Down
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