petsc-dev-bounces at
> mcs.anl.gov]
> On Behalf Of Barry Smith
> Sent: Friday, August 27, 2010 2:15 PM
> To: For users of the development version of PETSc
> Subject: [petsc-dev] [GPU] Performance on Fermi
>
>
> PETSc-dev folks,
>
> Please prepend all messages t
On Fri, 27 Aug 2010 16:34:45 -0500, Keita Teranishi wrote:
> Jed,
>
> I usually manually edit petscconf.h and petscvariables to change the
> installation configurations for Cray XT/XE. The problem is configure
> script of PETSc picks up wrong variables and #define macros because
> the OS and lib
On Fri, 27 Aug 2010 16:18:43 -0500, Keita Teranishi wrote:
> Yes, I replaced all the compiler flags by -O3.
petsc-maint doesn't come to me, but if the snippet that Barry quoted was
from your log_summary, then PETSC_USE_DEBUG was definitely defined when
plog.c was compiled. It's really much easie
On Fri, 27 Aug 2010 16:06:30 -0500, Keita Teranishi wrote:
> Barry,
>
> The CPU timing I reported was after recompiling the code (I removed
> PETSC_USE_DEBUG and GDB macros from petscconf.h).
Unless you were manually overriding compiler flags, it still wasn't
optimized. Please just reconfigu
Inc.
>> keita at cray.com
>>
>>
>>
>> -Original Message-----
>> From: Jed Brown [mailto:five9a2 at gmail.com] On Behalf Of Jed Brown
>> Sent: Friday, August 27, 2010 4:29 PM
>> To: Keita Teranishi; For users o
>
>
> -Original Message-
> From: Jed Brown [mailto:five9a2 at gmail.com] On Behalf Of Jed Brown
> Sent: Friday, August 27, 2010 4:29 PM
> To: Keita Teranishi; For users of the development version of PETSc
> Subject: RE: [petsc-dev] [GPU] Performance on
y.com
-Original Message-
From: Jed Brown [mailto:five...@gmail.com] On Behalf Of Jed Brown
Sent: Friday, August 27, 2010 4:29 PM
To: Keita Teranishi; For users of the development version of PETSc
Subject: RE: [petsc-dev] [GPU] Performance on Fermi
On Fri, 27 Aug
, August 27, 2010 4:16 PM
To: Keita Teranishi; For users of the development version of PETSc
Subject: Re: [petsc-dev] [GPU] Performance on Fermi
On Fri, 27 Aug 2010 16:06:30 -0500, Keita Teranishi wrote:
> Barry,
>
> The CPU timing I reported was after recompiling the code (
Message-
From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-boun...@mcs.anl.gov]
On Behalf Of Barry Smith
Sent: Friday, August 27, 2010 3:37 PM
To: For users of the development version of PETSc
Subject: Re: [petsc-dev] [GPU] Performance on Fermi
tsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-bounces at
> mcs.anl.gov] On Behalf Of Keita Teranishi
> Sent: Friday, August 27, 2010 2:20 PM
> To: For users of the development version of PETSc
> Subject: Re: [petsc-dev] [GPU] Performance on Fermi
>
> Barry,
>
> Y
mcs.anl.gov [mailto:petsc-dev-boun...@mcs.anl.gov]
On Behalf Of Keita Teranishi
Sent: Friday, August 27, 2010 2:20 PM
To: For users of the development version of PETSc
Subject: Re: [petsc-dev] [GPU] Performance on Fermi
Barry,
Yes. It improves the performance dramatically, but the execution time
Message-
From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-boun...@mcs.anl.gov]
On Behalf Of Barry Smith
Sent: Friday, August 27, 2010 2:15 PM
To: For users of the development version of PETSc
Subject: [petsc-dev] [GPU] Performance on Fermi
PETSc-dev folks,
Please prepend all
PETSc-dev folks,
Please prepend all messages to petsc-dev that involve GPUs with [GPU] so
they can be easily filtered.
Keita,
To run src/ksp/ksp/examples/tutorials/ex2.c with CUDA you need the flag
-vec_type cuda
Note also that this example is fine for simple ONE pro
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