Number of threads option - not being saved after shutdown

[Paul van Schayck]

Dear all,

The option "Options -> Memory & Threads -> Parallel Threads" does not
get saved after shutdown. Starting a new instance of ImageJ will have
reset the value to the default (number of cores available). Setting
this number to 1 would be extremely useful when running ImageJ on a
cluster, where the queue manages the amount of cores available.

This happens in ImageJ 1.48v, but also in the daily build of ImageJ2 and Fiji.

Thank you,

Paul

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[Paul van Schayck]

Dear Wayne,

I'm not sure this missed your attention, or that you didn't have time
yet to reply. As this problem seems to exists in IJ1 I'm sending this
also to you directly.

Thank you,

Paul

On Mon, Jun 23, 2014 at 2:15 PM, Paul van Schayck <[hidden email]> wrote:

> Dear all,
>
> The option "Options -> Memory & Threads -> Parallel Threads" does not
> get saved after shutdown. Starting a new instance of ImageJ will have
> reset the value to the default (number of cores available). Setting
> this number to 1 would be extremely useful when running ImageJ on a
> cluster, where the queue manages the amount of cores available.
>
> This happens in ImageJ 1.48v, but also in the daily build of ImageJ2 and Fiji.
>
> Thank you,
>
> Paul

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[Michael Schmid]

Hi Paul,

not saving the "Options -> Memory & Threads -> Parallel Threads" is probably on purpose. When saving it in the Prefs and migrating everything (including the Prefs) to another computer,  you may end up with poor performance because of an improper value.
Also, it's all too easy to forget setting it properly after changing it for some tests...

If you want to have a certain non-default value, why not put it into the StartupMacros.txt?  You can do the same also for other options that you always want to initialize to the same value, e.g.:

macro "AutoRun" {
// reset options
  run("Colors...", "foreground=black background=white selection=orange");
  run("Options...", "iterations=1 pad edm=Overwrite count=1");
  run("Profile Plot Options...", "draw interpolate sub-pixel");
  run("Memory & Threads...", "parallel=1 keep run");
}


Michael
________________________________________________________________
On Jul 1, 2014, at 11:11, Paul van Schayck wrote:

> Dear Wayne,
>
> I'm not sure this missed your attention, or that you didn't have time
> yet to reply. As this problem seems to exists in IJ1 I'm sending this
> also to you directly.
>
> Thank you,
>
> Paul
>
> On Mon, Jun 23, 2014 at 2:15 PM, Paul van Schayck <[hidden email]> wrote:
>> Dear all,
>>
>> The option "Options -> Memory & Threads -> Parallel Threads" does not
>> get saved after shutdown. Starting a new instance of ImageJ will have
>> reset the value to the default (number of cores available). Setting
>> this number to 1 would be extremely useful when running ImageJ on a
>> cluster, where the queue manages the amount of cores available.
>>
>> This happens in ImageJ 1.48v, but also in the daily build of ImageJ2 and Fiji.
>>
>> Thank you,
>>
>> Paul
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

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[Paul van Schayck]

Dear Michael,

On Tue, Jul 1, 2014 at 2:05 PM, Michael Schmid <[hidden email]> wrote:

> Hi Paul,
>
> not saving the "Options -> Memory & Threads -> Parallel Threads" is probably on purpose. When saving it in the Prefs and migrating everything (including the Prefs) to another computer,  you may end up with poor performance because of an improper value.
> Also, it's all too easy to forget setting it properly after changing it for some tests...
>
> If you want to have a certain non-default value, why not put it into the StartupMacros.txt?  You can do the same also for other options that you always want to initialize to the same value, e.g.:
>
> macro "AutoRun" {
> // reset options
>   run("Colors...", "foreground=black background=white selection=orange");
>   run("Options...", "iterations=1 pad edm=Overwrite count=1");
>   run("Profile Plot Options...", "draw interpolate sub-pixel");
>   run("Memory & Threads...", "parallel=1 keep run");
> }
>

Thank you for your answer! It maybe makes sense that this option is
not saved (although more options may fall under that consideration
then). However a note about it in the dialog may be a good idea.

I feel stupid though about not thinking about the macro call in an
autorun macro. Thanks for reminding me.

Thanks,

Paul

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