How to make stored expression to be active again?

[FeelUsM]

I want to write code that will save intermediate results in file, like this:

G G = expr;
#do iter = 1,10
some calculation
.store
save <out`iter'.sav>;
.sort
??? restore ???
#enddo
.end

Or how to do such calculations properly?

[tueda]

Perhaps, something like this?

S x;
.global
G G = x;
.sort
#do iter = 1, 10
* some calculation
  id x = x + 1;
  P;
  .store
* save the stored expression
  Save out`iter'.sav;
* prepare for the next iteration
  G Gtmp = G;
  .sort
  Delete storage;  * this clears all stored expressions
  Drop Gtmp;
  G G = Gtmp;
#enddo
.end

Saved expressions can be used in a different program:

Load out5.sav;  * pick up one of the save files
L F = G;
* some calculation
id x = x^2;
P;
.end

[FeelUsM]

Unfortunately each module that contain Local/Global G = Gtmp; expression executes in 1 (one) thread. So I need to separate this expression in separate module:

Global G = Gtmp;
.sort

But sorting large expressions in one thread needs very much time (more than do calculation and sorting with many threads).

Is there any way to copy expression without sorting?

[vermaseren]

Is looked into. Probably a special case for this can be created.