[petsc-dev] [GPU] Performance of ex19
Matthew Knepley
knepley at gmail.com
Tue Aug 31 14:36:34 CDT 2010
On Tue, Aug 31, 2010 at 7:17 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
> On Aug 31, 2010, at 3:14 PM, Keita Teranishi wrote:
>
> Does this PETSc use timers from CUDA?
>
>
> No, didn't know there were timers in CUDA.
>
Yes, I use them when I really want to know how well I an utilizing the
board, vs. how
much improvement overall I can expect in the code. When compared with PETSc
timers,
they can give us an idea of the transfer overhead, which I do in my GPU FEM
code.
Matt
> We actually want to use the real world timers because each method is
> actually a call on the CPU so real world time is what matters.
>
> Barry
>
>
> ================================
> Keita Teranishi
> Scientific Library Group
> Cray, Inc.
> keita at cray.com
> ================================
>
> *From:* petsc-dev-bounces at mcs.anl.gov [mailto:
> petsc-dev-bounces at mcs.anl.gov] *On Behalf Of *Barry Smith
> *Sent:* Tuesday, August 31, 2010 2:03 PM
> *To:* For users of the development version of PETSc
> *Subject:* Re: [petsc-dev] [GPU] Performance of ex19
>
>
> Your MatMult is now slower. Are your results reproducible, if you run 5
> times how similar are them?
>
> Barry
>
> On Aug 31, 2010, at 2:57 PM, Keita Teranishi wrote:
>
>
> VecDot 2 1.0 0.0000e+00 0.0 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
> VecMDot 2024 1.0 1.1560e+00 1.0 2.54e+09 1.0 0.0e+00 0.0e+00
> 0.0e+00 18 29 0 0 0 32 29 0 0 0 2201
> VecNorm 2096 1.0 3.5999e-01 1.0 1.68e+08 1.0 0.0e+00 0.0e+00
> 0.0e+00 6 2 0 0 0 10 2 0 0 0 466
> VecScale 2092 1.0 2.1599e-01 1.0 8.37e+07 1.0 0.0e+00 0.0e+00
> 0.0e+00 3 1 0 0 0 6 1 0 0 0 387
> VecCopy 2072 1.0 5.5997e-02 1.0 0.00e+00 0.0 0.0e+00 0.0e+00
> 0.0e+00 1 0 0 0 0 2 0 0 0 0 0
> VecSet 70 1.0 8.0004e-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
> VecAXPY 108 1.0 2.7999e-02 1.0 8.64e+06 1.0 0.0e+00 0.0e+00
> 0.0e+00 0 0 0 0 0 1 0 0 0 0 309
> VecWAXPY 68 1.0 7.9999e-03 1.0 2.72e+06 1.0 0.0e+00 0.0e+00
> 0.0e+00 0 0 0 0 0 0 0 0 0 0 340
> VecMAXPY 2092 1.0 5.8399e-01 1.0 2.71e+09 1.0 0.0e+00 0.0e+00
> 0.0e+00 9 31 0 0 0 16 31 0 0 0 4634
> VecScatterBegin 5 1.0 4.0002e-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
> VecReduceArith 2 1.0 3.9999e-03 1.0 1.60e+05 1.0 0.0e+00 0.0e+00
> 0.0e+00 0 0 0 0 0 0 0 0 0 0 40
> VecReduceComm 1 1.0 0.0000e+00 0.0 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
> VecCUDACopyTo 10 1.0 3.9999e-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
> VecCUDACopyFrom 5 1.0 4.0002e-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
> SNESSolve 1 1.0 3.6119e+00 1.0 8.87e+09 1.0 0.0e+00 0.0e+00
> 0.0e+00 56100 0 0 0 100100 0 0 0 2456
> SNESLineSearch 2 1.0 4.0002e-03 1.0 5.49e+06 1.0 0.0e+00 0.0e+00
> 0.0e+00 0 0 0 0 0 0 0 0 0 0 1374
> SNESFunctionEval 3 1.0 4.0002e-03 1.0 2.52e+06 1.0 0.0e+00 0.0e+00
> 0.0e+00 0 0 0 0 0 0 0 0 0 0 630
> SNESJacobianEval 2 1.0 3.1199e-01 1.0 3.85e+07 1.0 0.0e+00 0.0e+00
> 0.0e+00 5 0 0 0 0 9 0 0 0 0 123
> KSPGMRESOrthog 2024 1.0 1.7120e+00 1.0 5.09e+09 1.0 0.0e+00 0.0e+00
> 0.0e+00 26 57 0 0 0 47 57 0 0 0 2972
> KSPSetup 2 1.0 0.0000e+00 0.0 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 2 1.0 3.2919e+00 1.0 8.83e+09 1.0 0.0e+00 0.0e+00
> 0.0e+00 51 99 0 0 0 91 99 0 0 0 2681
> PCSetUp 2 1.0 0.0000e+00 0.0 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 2024 1.0 4.7998e-02 1.0 0.00e+00 0.0 0.0e+00 0.0e+00
> 0.0e+00 1 0 0 0 0 1 0 0 0 0 0
> MatMult 2092 1.0 8.9998e-01 1.0 3.32e+09 1.0 0.0e+00 0.0e+00
> 0.0e+00 14 37 0 0 0 25 37 0 0 0 3689
> MatAssemblyBegin 2 1.0 0.0000e+00 0.0 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 2 1.0 1.2000e-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
> MatZeroEntries 2 1.0 0.0000e+00 0.0 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
> MatFDColorApply 2 1.0 3.1199e-01 1.0 3.85e+07 1.0 0.0e+00 0.0e+00
> 0.0e+00 5 0 0 0 0 9 0 0 0 0 123
> MatFDColorFunc 42 1.0 7.9999e-03 1.0 3.53e+07 1.0 0.0e+00 0.0e+00
> 0.0e+00 0 0 0 0 0 0 0 0 0 0 4410
>
>
>
>
>
--
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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