[FLASH-USERS] Disable particles

[pchang]

Hi Petros,
Thank you.
I will try to increase my ed_maxRayCount runtime parameter. But how 
about pt_maxPerProc? I set it in flash.par and found it is listed under 
"Ignored Parameters". I believe it is because I don't have the unit 
(particle unit?). Do I need to include that? or do I just increase my 
ed_maxRayCount and ignore pt_maxPerProc?

Po-Yu

On 11/18/2014 4:04 PM, Petros Tzeferacos wrote:
> Hi Po-Yu,
>
> the error message you are having is misleading.
>
> As Norbert mentioned, the particles used by the laser unit are a 
> different beast altogether but share some of the infrastructure. To 
> allow for more rays you need to increase your ed_maxRayCount runtime 
> parameter in the flash.par, making sure that the total number of rays 
> you are launching does not exceed this number.
>
> I'll update the error message to reflect this.
>
> Best,
> -- Petros
>
>
> On Tue, Nov 18, 2014 at 2:36 PM, Norbert Flocke 
> <flocke at flash.uchicago.edu <mailto:flocke at flash.uchicago.edu>> wrote:
>
>     Hi Po-Yu,
>
>     The +laser setup uses -without-unit=Particles, which means that
>     the Particles unit is dissabled. What the laser uses is the
>     Grid/GridParticles
>     routines to 'handle' particles. The rays from the laser are treated
>     as particles when moving them through the grid. So the particles
>     unit is
>     different from the actual tools (sitting in the Grid unit) that
>     are used to move the particles (in your case the rays) through the
>     grid.
>
>     Best regards,
>     Norbert
>
>
>
>     On Tue, 18 Nov 2014, pchang wrote:
>
>         Hi John,
>         Yes. That's what I did also. More precisely, I tried two ways:
>         (1)have useParticles = .false.  in flash.par (2) have setup
>         variable +laser which automatically set -without-unit=Particles.
>         I think in the log file, it shows "useParticles=F" just to
>         show the run time setting. So I believe the particle unit has
>         been disable. And that's why it doesn't make sense to me when
>         I have an error about particle number when I don't have the unit
>
>         Best,
>
>         Po-Yu
>
>         On 11/18/2014 3:17 PM, John ZuHone wrote:
>
>             Hi Po-Yu,
>
>             Silly question, but in the flash.par, you set
>
>             useParticles = .false.
>
>             not
>
>             useParticles=F
>
>             correct?
>
>             Best,
>
>             John
>
>                 On Nov 18, 2014, at 3:13 PM, pchang
>                 <pchang at lle.rochester.edu
>                 <mailto:pchang at lle.rochester.edu>> wrote:
>
>                 Hi all,
>                 I am doing simulation for imploding cylindrical target
>                 using lasers. I am using the hydrodynamics units and
>                 don't use the particles unit. In the list of
>                 RuntimeParameters in the log file, I also have
>                 useparticles=F. So, I believe I don't have the
>                 particles unit in the simulations. It works fine when
>                 I have less than two laser beams. However, when I
>                 added more beams, the simulation stopped and gave an
>                 error:
>
>                 Overflow! Mesh PE           9 , gettingFrom    2 ,
>                 recvCount 8068 , max particles       10000
>                 DRIVER_ABORT: [gr_ptMove]: Insufficient space in
>                 particles communication buffer: increase pt_maxPerProc
>
>                 So, my questions are:
>
>                 (1) I thought the particle unit was not used. Why did
>                 it consider the number of max particles.
>                 (2) If I have to have the particle unit, when can I
>                 increase pt_maxPerProc ? in the flash.par? or as setup
>                 variable?
>
>                 Thank you,
>
>                 Po-Yu
>
>
>                 -- 
>                 Po-Yu Chang
>                 Postdoc
>                 Fusion Science Center,
>                 Laboratory for Laser Energetics
>                 University of Rochester
>                 250 East River Road
>                 Rochester, New York 14623
>                 Phone: (585) 273-5179 <tel:%28585%29%20273-5179>
>                 FAX: (585) 275-5960 <tel:%28585%29%20275-5960>
>                 pchang at lle.rochester.edu <mailto:pchang at lle.rochester.edu>
>
>
>
>
>         -- 
>         Po-Yu Chang
>         Postdoc
>         Fusion Science Center,
>         Laboratory for Laser Energetics
>         University of Rochester
>         250 East River Road
>         Rochester, New York 14623
>         Phone: (585) 273-5179 <tel:%28585%29%20273-5179>
>         FAX: (585) 275-5960 <tel:%28585%29%20275-5960>
>         pchang at lle.rochester.edu <mailto:pchang at lle.rochester.edu>
>
>
>
>
> -- 
> /* ************************************************* *
>      Petros Tzeferacos, PhD
>
>      Research Scientist,
>      Associate Director & Code Group Leader,
>      Flash Center for Computational Science,
>      Department of Astronomy & Astrophysics,
>      University of Chicago.
>      5747 S. Ellis Ave, Jones Lab. room 317
>      Chicago, IL 60637
>      Tel. 773-834-3236
> petros.tzeferacos at flash.uchicago.edu 
> <mailto:petros.tzeferacos at flash.uchicago.edu>
>  * ************************************************* */


-- 
Po-Yu Chang
Postdoc
Fusion Science Center,
Laboratory for Laser Energetics
University of Rochester
250 East River Road
Rochester, New York 14623
Phone: (585) 273-5179
FAX: (585) 275-5960
pchang at lle.rochester.edu

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