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Re: Quit and Restart kernel quickly?

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  • Subject: [mg127305] Re: Quit and Restart kernel quickly?
  • From: Ralph Dratman <ralph.dratman at>
  • Date: Sun, 15 Jul 2012 04:27:27 -0400 (EDT)
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As a possible supplement or alternative to CleanSlate, I use the
following code near the top of a notebook:

(* Limit a memory-consuming option. *)
$HistoryLength = 0;
(* The following interrupts on any message! *)
messageHandler = If[Last[#], Interrupt[]] & ;
Internal`AddHandler["Message", messageHandler];
If[True,(* Bring back in all the saved results from the fully \
evaluated file, that is, a prior evaluation of this file. *)
 (* The code that performs the \
save is at the bottom of this file. *)
 theSavedResultsFileName =
  StringReplace[NotebookFileName[], ".nb" -> ".mx"];
Interrupt[];(* Pause after reloading symbols. *)

Then somewhere below that, usually near the bottom of the notebook, I add:

Interrupt[];(* Pause before saving symbols. *)
(* The following saves ALL globals -- not necessary. *)
saveName =
 StringReplace[NotebookFileName[], ".nb" -> ".mx"]
DumpSave[saveName, "Global`"];

Saving all the globals is not always the best way to do this. Rather,
replace "Global`" with a specific list of symbols whose value you want
restored from the prior session. Good candidates are variables that
take a long time to calculate.


On Sat, Jul 14, 2012 at 1:32 AM, Bill Rowe <readnews at> wrote:
> On 7/13/12 at 2:54 AM, mstankus at wrote:
>>Is there a way to quit and restart the kernel quickly? I would like
>>to do this without having to use the menu twice.
> Evaluating Quit[] will stop the kernel. Restarting the kernel
> can be done by evaluating pretty much anything else.
> Note, if your purpose in quitting the kernel is to reset your
> session to its initial state, take a look at the package
> Utilitcries`CleanSlate`. After this package is loaded you can
> evaluate CleanSlate[] to reset your session to the state that
> existed at the time the CleanSlate package was loaded.
> Using CleanSlate to reset your session can be faster than
> quitting and restarting the kernel particularly if you have
> added several things in the init.m file the kernel executes as
> it starts. Additionally, CleanSlate offers finer control on
> resetting things. For example you could do
> several computations
> <<Utilities`CleanSlate`
> more computations
> CleanSlate[]
> This would reset your session state so that variables assigned
> values, functions etc created during the "several computations"
> are left intact while those created during "more computations"
> are removed. In contrast, quitting the kernel would remove everything.

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