Grid/systems at 357ede36642223f1e605bbf583e87d6e8f20bc83 - Grid

mirror of https://github.com/paboyle/Grid.git synced 2026-09-04 16:59:36 +01:00

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T

Peter Boyle 357ede3664 Improved FFT -- 1.5-2x when there are 2-6 ranks in a given axis of the cartesian communicator.

Barrel shift -> all to all (x2) and distributed FFT work fully load balanced without redundant work.
There is little more I can do now on FFT. Comms dominated and running distributed work dividing bandwidth optimal RingAllToAll

/ccs/home/paboyle/ParallelIO/systems/Frontier/tests/core/Test_fft_prop --mpi 3.6.4.4 --grid 48.48.48.96 --accelerator-threads 8 --shm 4096 --shm-mpi 1 --device-mem
32000 --log Error,Warning,Message,Performance

*************************************************
 Benchmarking FFT of LatticeFermionD on plane wave
*************************************************
Grid : Performance : 0.501524 s :  FFT took     0.001311 s (transpose P=3)
Grid : Performance : 0.501531 s :  FFT pack     5.9e-05 s
Grid : Performance : 0.501533 s :  FFT alltoall 0.000828 s
Grid : Performance : 0.501534 s :  FFT reorder  0.000204 s
Grid : Performance : 0.501535 s :  FFT kernels  1e-05 s
Grid : Performance : 0.501536 s :  FFT unpack   5e-05 s
Grid : Performance : 0.509992 s :  FFT took     0.001829 s (transpose P=6)
Grid : Performance : 0.510000 s :  FFT pack     6e-05 s
Grid : Performance : 0.510002 s :  FFT alltoall 0.001436 s
Grid : Performance : 0.510003 s :  FFT reorder  0.000202 s
Grid : Performance : 0.510005 s :  FFT kernels  9e-06 s
Grid : Performance : 0.510006 s :  FFT unpack   5.3e-05 s
Grid : Performance : 0.517690 s :  FFT took     0.001599 s (transpose P=4)
Grid : Performance : 0.517698 s :  FFT pack     6e-05 s
Grid : Performance : 0.517700 s :  FFT alltoall 0.001258 s
Grid : Performance : 0.517701 s :  FFT reorder  0.0002 s
Grid : Performance : 0.517702 s :  FFT kernels  9e-06 s
Grid : Performance : 0.517703 s :  FFT unpack   4.9e-05 s
Grid : Performance : 0.524858 s :  FFT took     0.001561 s (transpose P=4)
Grid : Performance : 0.524865 s :  FFT pack     5.8e-05 s
Grid : Performance : 0.524867 s :  FFT alltoall 0.001213 s
Grid : Performance : 0.524868 s :  FFT reorder  0.000209 s
Grid : Performance : 0.524869 s :  FFT kernels  8e-06 s
Grid : Performance : 0.524870 s :  FFT unpack   4.9e-05 s
*************************************************
 FFT of [48 48 48 96] LatticeFermionD took 0.030916 s
*************************************************

2026-09-03 17:33:32 -04:00

Aurora

Scaling perf

2026-08-13 23:46:33 -04:00

Aurora-AOT

Configure for AOT on Aurora latest software

2024-09-23 11:25:44 +00:00

Booster

Update booster compiule

2026-06-17 20:46:53 +02:00

Crusher

Dirichlet improvements that I failed to commit