On 10/11/2015 8:27 PM, Matthew Knepley wrote:
On Tue, Nov 10, 2015 at 3:27 AM, TAY wee-beng <[email protected]
<mailto:[email protected]>> wrote:
Hi,
Inside my subroutine, I need to access the DA variable
cu_types_array frequently.
So I need to call DMDAVecGetArrayF90 and DMDAVecRestoreArrayF90
before and after frequently.
Is this necessary? Can I call DMDAVecGetArrayF90 at the start and
only call DMDAVecRestoreArrayF90 towards the end, where I don't
need to modify the values of cu_types_array anymore?
Will this cause memory corruption?
You cannot use any other vector operations before you have called Restore.
Hi,
What do you mean by vector operations? I will just be doing some maths
operation to change the values in cu_types_array. Is that fine?
Also, must the array be restored using DMDAVecRestoreArrayF90
before calling DMLocalToLocalBegin,DMLocalToLocalEnd?
Yes.
Matt
--
Thank you.
Yours sincerely,
TAY wee-beng
--
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
