[petsc-users] Exposing further detail in -log_view for Hypre withe PETSc
Khurana, Parv
p.khurana22 at imperial.ac.uk
Wed Apr 10 08:09:53 CDT 2024
Hi Mark,
I have had a look at these, and I could only find these ones that looked relevant:
-pc_hypre_boomeramg_print_statistics: Print statistics (None)
-pc_hypre_boomeramg_print_debug: Print debug information (None)
-pc_hypre_boomeramg_print_statistics prints information about the V-cycle (number of levels, Dofs per level etc.) It also gave this information (which is something I can potentially work with?)
Proc = 0 Level = 0 Coarsen Time = 0.022089
Proc = 0 Level = 0 Build Interp Time = 0.138844
Proc = 0 Level = 0 Build Coarse Operator Time = 0.354488
Proc = 0 Level = 1 Coarsen Time = 0.009334
Proc = 0 Level = 1 Build Interp Time = 0.074119
Proc = 0 Level = 1 Build Coarse Operator Time = 0.097702
Proc = 0 Level = 2 Coarsen Time = 0.004301
Proc = 0 Level = 2 Build Interp Time = 0.035835
Proc = 0 Level = 2 Build Coarse Operator Time = 0.030501
Proc = 0 Level = 3 Coarsen Time = 0.001876
Proc = 0 Level = 3 Build Interp Time = 0.014711
Proc = 0 Level = 3 Build Coarse Operator Time = 0.008681
Proc = 0 Level = 4 Coarsen Time = 0.000557
Proc = 0 Level = 4 Build Interp Time = 0.004307
Proc = 0 Level = 4 Build Coarse Operator Time = 0.002373
Proc = 0 Level = 5 Coarsen Time = 0.000268
Proc = 0 Level = 5 Build Interp Time = 0.001061
Proc = 0 Level = 5 Build Coarse Operator Time = 0.000589
Proc = 0 Level = 6 Coarsen Time = 0.000149
Proc = 0 Level = 6 Build Interp Time = 0.000339
Proc = 0 Level = 6 Build Coarse Operator Time = 0.000206
Proc = 0 Level = 7 Coarsen Time = 0.000090
Proc = 0 Level = 7 Build Interp Time = 0.000148
Proc = 0 Level = 7 Build Coarse Operator Time = 0.000085
Proc = 0 Level = 8 Coarsen Time = 0.000054
Proc = 0 Level = 8 Build Interp Time = 0.000100
Proc = 0 Level = 8 Build Coarse Operator Time = 0.000053
I have not tried -pc_hypre_boomeramg_print_debug yet.
Think I can get the total coarsen time by summing up the time from all the levels here. I am still trying to understand how to get the time spent to solve the problem at the coarsest level.
Best
Parv
From: Mark Adams <mfadams at lbl.gov>
Sent: Wednesday, April 10, 2024 2:01 PM
To: Khurana, Parv <p.khurana22 at imperial.ac.uk>
Cc: petsc-users at mcs.anl.gov
Subject: Re: [petsc-users] Exposing further detail in -log_view for Hypre withe PETSc
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I believe there is an option to get hypre to print its performance data.
Run with -help and grep on "pc_hypre" and look for something that looks like a logging or view parameter.
Mark
On Wed, Apr 10, 2024 at 7:49 AM Khurana, Parv <p.khurana22 at imperial.ac.uk<mailto:p.khurana22 at imperial.ac.uk>> wrote:
Hello PETSc users community, Thank you in advance for your help as always. I am using BoomerAMG from Hypre via PETSc as a part of preconditioner in my software (Nektar++). I am trying to understand the time profiling information that is printed
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Hello PETSc users community,
Thank you in advance for your help as always.
I am using BoomerAMG from Hypre via PETSc as a part of preconditioner in my software (Nektar++). I am trying to understand the time profiling information that is printed using the -log_view option.
I want to understand how much time is spent in the smoothening step vs the time to solve on the coarsest grid I reach. The output that I get from -log_view (pasted below) gives me information of the KSPSolve and MatMult, but I think I need more granular time information to see a further breakdown of time spent within my routines. I would like to hear if anyone has any recommendations on obtaining this information?
Best
Parv Khurana
PETSc database options used for solve:
-ksp_monitor # (source: file)
-ksp_type preonly # (source: file)
-log_view # (source: file)
-pc_hypre_boomeramg_coarsen_type hmis # (source: file)
-pc_hypre_boomeramg_grid_sweeps_all 2 # (source: file)
-pc_hypre_boomeramg_interp_type ext+i # (source: file)
-pc_hypre_boomeramg_max_iter 1 # (source: file)
-pc_hypre_boomeramg_P_max 2 # (source: file)
-pc_hypre_boomeramg_print_debug 1 # (source: file)
-pc_hypre_boomeramg_print_statistics 1 # (source: file)
-pc_hypre_boomeramg_relax_type_all sor/jacobi # (source: file)
-pc_hypre_boomeramg_strong_threshold 0.7 # (source: file)
-pc_hypre_boomeramg_truncfactor 0.3 # (source: file)
-pc_hypre_type boomeramg # (source: file)
-pc_type hypre # (source: file)
PETSc log_view output:
------------------------------------------------------------------------------------------------------------------------
Event Count Time (sec) Flop --- Global --- --- Stage ---- Total
Max Ratio Max Ratio Max Ratio Mess AvgLen Reduct %T %F %M %L %R %T %F %M %L %R Mflop/s
------------------------------------------------------------------------------------------------------------------------
--- Event Stage 0: Main Stage
BuildTwoSided 1 1.0 9.6900e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
MatMult 14 1.0 1.6315e-01 1.0 1.65e+08 1.0 0.0e+00 0.0e+00 0.0e+00 0 86 0 0 0 0 86 0 0 0 1011
MatConvert 1 1.0 4.3092e-01 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
MatAssemblyBegin 3 1.0 3.1680e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
MatAssemblyEnd 3 1.0 9.4178e-01 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
MatGetRowIJ 2 1.0 1.1630e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
MatSetPreallCOO 1 1.0 3.2132e-01 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
MatSetValuesCOO 1 1.0 2.9956e-02 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
VecNorm 28 1.0 1.3981e-02 1.0 2.10e+07 1.0 0.0e+00 0.0e+00 0.0e+00 0 11 0 0 0 0 11 0 0 0 1499
VecSet 13 1.0 6.5185e-03 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
VecAYPX 14 1.0 7.1511e-03 1.0 5.24e+06 1.0 0.0e+00 0.0e+00 0.0e+00 0 3 0 0 0 0 3 0 0 0 733
VecAssemblyBegin 14 1.0 1.3998e-05 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
VecAssemblyEnd 14 1.0 4.2560e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
VecScatterBegin 14 1.0 8.2761e-03 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
VecScatterEnd 14 1.0 4.4665e-05 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
SFSetGraph 1 1.0 6.5993e-03 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
SFSetUp 1 1.0 7.9212e-03 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
SFPack 14 1.0 5.8690e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
SFUnpack 14 1.0 4.3370e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
KSPSetUp 1 1.0 2.4910e-06 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
KSPSolve 14 1.0 2.1922e+00 1.0 1.91e+08 1.0 0.0e+00 0.0e+00 0.0e+00 0 100 0 0 0 0 100 0 0 0 87
PCSetUp 1 1.0 1.3165e+00 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
PCApply 14 1.0 1.9990e+00 1.0 0.00e+00 0.0 0.0e+00 0.0e+00 0.0e+00 0 0 0 0 0 0 0 0 0 0 0
------------------------------------------------------------------------------------------------------------------------
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