portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2026-05-25 19:44:17 +01:00
Code Releases Activity

FFT: cache plans per vobj type across calls

Browse Source 
Plans are created lazily on the first FFT_dim call and reused for all
subsequent calls on the same FFT object.  PlanCreate<vobj>() can be
called explicitly to pre-warm the cache.  PlanDestroy() must be called
before switching to a different vobj type; the destructor cleans up any
live plans automatically.

Update Test_fft.cc and Test_fftf.cc to call PlanDestroy() between the
LatticeComplex and LatticeSpinMatrix sections that reuse the same FFT object.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Peter Boyle
2026-05-19 15:12:10 -04:00
parent b6abdc3845
commit 1e29c59bcc
3 changed files with 250 additions and 258 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/core/Test_fft.cc
+1
View File
@@ -113,6 +113,7 @@ int main (int argc, char ** argv)
Cref= Cref - C;
std::cout << " invertible check " << norm2(Cref)<<std::endl;
theFFT.PlanDestroy();
Stilde=S;
std::cout<<" Benchmarking FFT of LatticeSpinMatrix "<<std::endl;
theFFT.FFT_dim(Stilde,Stilde,0,FFT::forward); std::cout << theFFT.MFlops()<<" mflops "<<std::endl;