[petsc-dev] Problem with petsc-dev

[Barry Smith]

  Keita,

    Make sure you ALWAYS use the flag -cuda_synchronize when you run with -log_summary

    Otherwise you get misleading numbers. (Which I am guessing you got).

     Barry



On Aug 27, 2010, at 1:28 PM, Keita Teranishi wrote:

> Barry,
> 
> I already see a big difference in MatMult routine of ksp/ksp/examples/tutorials/ex2.c, and I am very happy to try that example program.
> 
> Thanks,
> ================================
>  Keita Teranishi
>  Scientific Library Group
>  Cray, Inc.
>  keita at cray.com
> ================================
> 
> 
> -----Original Message-----
> From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-bounces at mcs.anl.gov] On Behalf Of Barry Smith
> Sent: Friday, August 27, 2010 1:13 PM
> To: For users of the development version of PETSc
> Subject: Re: [petsc-dev] Problem with petsc-dev
> 
> 
>   You can run, for example, src/snes/examples/tutorials ex19 with the options -pc_type jacobi -dmmg_nlevels 5  -da_vec_type cuda -da_mat_type aijcuda  and run without those last two options to NOT use the GPU and compare the results with -log_summary. We'd be interesting in seeing those numbers also.
> 
>   Barry
> 
> On Aug 27, 2010, at 1:07 PM, Keita Teranishi wrote:
> 
>> Satish,
>> 
>> Now I got the latest copy using mercurial.  Thanks!
>> I am going to check the performance with Fermi.  Is there any command line option available to swith CUSP? Or do I have to apply MatConvet() with PETSc function calls?
>> 
>> Thanks,
>> ================================
>> Keita Teranishi
>> Scientific Library Group
>> Cray, Inc.
>> keita at cray.com
>> ================================
>> 
>> 
>> -----Original Message-----
>> From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-bounces at mcs.anl.gov] On Behalf Of Satish Balay
>> Sent: Friday, August 27, 2010 11:14 AM
>> To: For users of the development version of PETSc
>> Subject: Re: [petsc-dev] Problem with petsc-dev
>> 
>> On Fri, 27 Aug 2010, Keita Teranishi wrote:
>> 
>>> Satish,
>>> 
>>> Thanks.  I do not see any mercurial package for SUSE, let me try if it works.
>> 
>> source install of mercruial is pretty easy
>> 
>> cd mercurial
>> python setup.py install --prefix=/foo/bar
>> 
>> [instructions say - use PYTHONPATH - but I like to hardcode it in 'hg'
>> script] i.e edit /foo/bar/bin/hg and add the following at the very
>> begining [where mercurial uses a different value of pythonXX -
>> depending on the python version on your machine]
>> 
>> import sys
>> sys.path.insert(0,'/foo/bar/lib/pythonXX/site-packages/')
>> 
>> Satish
>