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minor fixes to issues detected on fugaku installation #484

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minor fixes to issues detected on fugaku installation #484

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2 changes: 1 addition & 1 deletion include/libcloudph++/common/ice_nucleation.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ namespace libcloudphxx

if (INP_type == INP_t::mineral && A > real_t(1e-20))
{
return (real_t(273.15) + (real_t(8.934) - log(- log(real_t(1.) - rand) / A) ) / real_t(0.517)) * si::kelvin;
return real_t(real_t(273.15) + (real_t(8.934) - log(- log(real_t(1.) - rand) / A) ) / real_t(0.517)) * si::kelvin;
}
Comment on lines 36 to 38
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Copilot AI Mar 26, 2026

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This return statement appears to be missing a closing ) for the outer real_t( cast, which will fail to compile. Even with the parenthesis fixed, casting the unit-bearing expression to real_t would be incorrect here since the function returns quantity<si::temperature, real_t>; the previous form (scalar) * si::kelvin is the appropriate pattern.

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else
{
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10 changes: 7 additions & 3 deletions src/impl/condensation/perparticle/perparticle_nomixing_adaptive_sstp_cond.ipp
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Expand Up @@ -46,6 +46,10 @@ namespace libcloudphxx
tpl_t tpl
) //noexcept
{
#if !defined(__NVCC__)
using std::abs;
#endif

// copy values into local variables
// variables that are not modified
const real_t sstp_dlt_rv = thrust::get<5>(thrust::get<0>(tpl));
Expand Down Expand Up @@ -160,9 +164,9 @@ namespace libcloudphxx

if(sstp_cond_try > 1) // check for convergence
{
if((cuda::std::abs(drw2_new * 2 - drw2) <= sstp_cond_adapt_drw2_eps * rw2) // drw2 relative to rw2 converged
&& cuda::std::abs(drw2 < sstp_cond_adapt_drw2_max * rw2)) // otherwise for small droplets (near activation?) drw2_new == 2*drw already for 2 substeps, but we ativate too many droplets
// if(cuda::std::abs(drw2_new * 2 - drw2) <= tol * drw2) // drw2 converged
if((abs(drw2_new * 2 - drw2) <= sstp_cond_adapt_drw2_eps * rw2) // drw2 relative to rw2 converged
&& abs(drw2 < sstp_cond_adapt_drw2_max * rw2)) // otherwise for small droplets (near activation?) drw2_new == 2*drw already for 2 substeps, but we ativate too many droplets
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The second convergence condition applies abs() to the result of a comparison (drw2 < sstp_cond_adapt_drw2_max * rw2), so it effectively becomes abs(bool) (0/1) rather than bounding the magnitude of drw2. This likely breaks the intended safeguard for small droplets; consider comparing abs(drw2) (or abs(drw2_new) as appropriate) against sstp_cond_adapt_drw2_max * rw2 instead.

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&& abs(drw2 < sstp_cond_adapt_drw2_max * rw2)) // otherwise for small droplets (near activation?) drw2_new == 2*drw already for 2 substeps, but we ativate too many droplets
&& (abs(drw2_new) < sstp_cond_adapt_drw2_max * rw2)) // otherwise for small droplets (near activation?) drw2_new == 2*drw already for 2 substeps, but we ativate too many droplets

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// if(abs(drw2_new * 2 - drw2) <= tol * drw2) // drw2 converged
{
sstp_cond = sstp_cond_try / 2;
_apply_noncond_perparticle_sstp_delta(-delta_fraction_applied); // revert last addition to get to a state after one step of converged number
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