On Wed, Jul 22, 2009 at 12:26 AM, Barry Smithbsmith at mcs.anl.gov wrote:
Can we at least agree on the simple rules below:
1) KSPSetFromOptions() requires a previous call to KSPSetOperators()
2) SNESSetFromOptions() requires a previous call to:
?a) SNESSetFunction(), and also
On Jul 22, 2009, at 9:39 AM, Lisandro Dalcin wrote:
On Wed, Jul 22, 2009 at 12:26 AM, Barry Smithbsmith at mcs.anl.gov
wrote:
Can we at least agree on the simple rules below:
1) KSPSetFromOptions() requires a previous call to KSPSetOperators()
2) SNESSetFromOptions() requires a
PM CDT
To: For users of the development version of PETSc petsc-dev at mcs.anl.gov
Subject: Re: SNESSetUp() and matrix-free options
Lisandro,
The checking of the options can be moved to SNESSetFromOptions()
that then set some flag in the snes object;
but the actual action
of the development version of PETSc petsc-dev at mcs.anl.gov
Subject: Re: SNESSetUp() and matrix-free options
?Lisandro,
? ?The checking of the options can be moved to SNESSetFromOptions() that
then set some flag in the snes object;
but the actual action of MatCreateSNESMF() etc must continue to take
that does not follow the rules.
Begin forwarded message:
From: Barry Smith bsmith at mcs.anl.gov
Date: May 6, 2009 3:25:43 PM CDT
To: For users of the development version of PETSc petsc-dev at mcs.anl.gov
Subject: Re: SNESSetUp() and matrix-free options
Lisandro,
The checking
not follow the rules.
Begin forwarded message:
From: Barry Smith bsmith at mcs.anl.gov
Date: May 6, 2009 3:25:43 PM CDT
To: For users of the development version of PETSc
petsc-dev at mcs.anl.gov
Subject: Re: SNESSetUp() and matrix-free options
?Lisandro,
? The checking of the options can
forwarded message:
From: Barry Smith bsmith at mcs.anl.gov
Date: May 6, 2009 3:25:43 PM CDT
To: For users of the development version of PETSc
petsc-dev at mcs.anl.gov
Subject: Re: SNESSetUp() and matrix-free options
Lisandro,
The checking of the options can be moved
On Fri, May 8, 2009 at 3:55 PM, Barry Smith bsmith at mcs.anl.gov wrote:
?Quick look is ok for me.
Just a note, to put it clear. With my patch, passing both -snes_mf
-snes_mf_operator is valid, and equivalent to just passing
-snes_mf_operator ...
?Barry
On May 8, 2009, at 1:39 PM,
Quick look is ok for me.
Barry
On May 8, 2009, at 1:39 PM, Lisandro Dalcin wrote:
Well, it was not so easy to change the options name...
We would need to update docs, tests, tutorial examples, and at this
point it is not clear if we could agree on better options names...
I'm now
On Thu, May 7, 2009 at 5:14 PM, Barry Smith bsmith at mcs.anl.gov wrote:
3) I would like to add a call to set matrix-free programatically...
something like SNESSetUseMFFD(snes,...). Any signature suggetions
regarding my previous discussions about the many options?
? No need to add this. One
One could have -snes_mf override -snes_mf_operator that would make
sense.
There is no hierarchy of options (first, last, in files etc) in
order to keep the model
simple.
It is always possible someone has two options that conflict with
each other in the
options database. This is
I don't have a problem with (somehow) merging the two options, but
I don't see it
as a big improvement.
-snes_mf -snes_mf_type both or operator
instead of -snes_mf or -snes_mf_operator
I don't see this as a big improvement.
Barry
On May 7, 2009, at 3:47 PM, Jed Brown wrote:
On Thu, May 7, 2009 at 6:14 PM, Jed Brown jed at 59a2.org wrote:
Barry Smith wrote:
? ?I understand this. I just don't view this as a big deal worth
changing the code over.
I agree. ?My comment was that *if* the options were to be changed, as
Lisandro was suggesting, then it would be better
How about?
-snes_mf (means what it currently means)
-snes_mf operator (means what -snes_mf_operator means)
Barry
On May 7, 2009, at 6:03 PM, Lisandro Dalcin wrote:
On Thu, May 7, 2009 at 6:14 PM, Jed Brown jed at 59a2.org wrote:
Barry Smith wrote:
I understand this. I
Currently, -snes_mf* options are handled in SNESSetUp()... I think all
you will agree that the proper place for them is
SNESSetFromOptions()... However, perhaps I'm missing something and
things are like that for some reason... In that case I would like to
know the reason and perhaps I could fix
Lisandro,
The checking of the options can be moved to SNESSetFromOptions()
that then set some flag in the snes object;
but the actual action of MatCreateSNESMF() etc must continue to take
place in the setup.
Feel free to change if you like,
Barry
On May 6, 2009, at
On May 6, 2009, at 3:37 PM, Lisandro Dalcin wrote:
On Wed, May 6, 2009 at 5:25 PM, Barry Smith bsmith at mcs.anl.gov
wrote:
Lisandro,
The checking of the options can be moved to
SNESSetFromOptions() that
then set some flag in the snes object;
but the actual action of
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