[Nek5000-users] Sharing parameters between processors

[nek5000-users at lists.mcs.anl.gov]

OK thanks, I will try that!

Oscar

On 01/12/2015 11:37, nek5000-users at lists.mcs.anl.gov wrote :

For that purpose you could also use a pseudo-random-numbmer generator that
produces the sae numbers on each processor (i.e. uses the same seed).

Otherwise, use what I wrote earlier, namely a bcast operation. That is one
line in the code assuming the data is produced on processor 0.

philipp

On 2015-12-01 08:38, nek5000-users at lists.mcs.anl.gov wrote:

Hi Paul,

Thanks for your quick answer! These are random numbers I use. They is
not a very large number of them, I have about 100 elements in my array.
However,I need to use the same on all my domain, but as they are random,
I can only generate them once.

Oscar

On 01/12/2015 03:47, nek5000-users at lists.mcs.anl.gov
<mailto:nek5000-users at lists.mcs.anl.gov> wrote :


Hi Oscar,

Is there a reason why your quantity is modified only on one processor,
and not on the others?

How many values are you working with?

Paul

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*Subject:* [Nek5000-users] Sharing parameters between processors

Hi Nekers,

In my current simulation, I am defining an array containing parameters
that are shared between several processors. I have tried to do this in
the usercheck subroutine, with a COMMON statement. However, the COMMON
statement enables saving the parameters between two successive calls
of the usercheck by the same processor, but does not enable to share a
variable between two processor. In other words, if I modify the
variable a on the processor 1, the variable a on the processor 2 will
not be modified, which is not what I want. Any idea on how to do that?

Thanks for your help,

Oscar Valdorez



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