It does not seem to solve the problem (FriCAS just Git cloned) . I
will look at this tomorrow if necessary.
FriCAS Computer Algebra System
Version: FriCAS 2023-06-17 built with sbcl 2.3.7.debian
Timestamp: mar. 02 janv. 2024 01:06:37 CET
- Greg
Le lun. 1 janv. 2024 à 21:11, Waldek Hebisch <[email protected]> a écrit :
>
> On Mon, Jan 01, 2024 at 05:05:42PM +0100, Grégory Vanuxem wrote:
> > Hello,
> >
> > Can you explain this:
> >
> > But in the FriCAS interpreter full manual garbage collection doesn't
> > seem to work:
> >
> > Version: FriCAS 1.3.10-dev built with SBCL 2.4.0
> > Timestamp: lun. 01 janv. 2024 15:57:35 CET
> > -----------------------------------------------------------------------------
> > Issue )copyright to view copyright notices.
> > Issue )summary for a summary of useful system commands.
> > Issue )quit to leave FriCAS and return to shell.
> > -----------------------------------------------------------------------------
> >
> > (1) -> )lisp (room)
> >
> > Dynamic space usage is: 41,776,368 bytes. <===========
> > Immobile space usage is: 24,498,176 bytes (23,440 bytes overhead).
> > Read-only space usage is: 12,701,888 bytes.
> > Static space usage is: 4,464 bytes.
> > Control stack usage is: 1,984 bytes.
> > Binding stack usage is: 368 bytes.
> > Control and binding stack usage is for the current thread only.
> > Garbage collection is currently enabled.
> >
> > Breakdown for dynamic space:
> > 12,409,920 bytes for 198,346 instance objects
> > 11,857,552 bytes for 75,593 simple-vector objects
> > 9,962,192 bytes for 622,637 cons objects
> > 7,538,176 bytes for 100,409 other objects
> >
> > 41,767,840 bytes for 996,985 dynamic objects (space total)
> >
> > [snip]
> >
> > ; =================================
> > (1) -> a:=qnew(5000,5000)$Matrix(DoubleFloat);
> >
> > Type:
> > Matrix(DoubleFloat)
> > ; =================================
> >
> > (2) -> )lisp (room)
> >
> > Dynamic space usage is: 241,668,128 bytes. <============
> > Immobile space usage is: 24,572,528 bytes (27,120 bytes overhead).
> > Read-only space usage is: 12,701,888 bytes.
> > Static space usage is: 4,464 bytes.
> > Control stack usage is: 1,984 bytes.
> > Binding stack usage is: 368 bytes.
> > Control and binding stack usage is for the current thread only.
> > Garbage collection is currently enabled.
> >
> > Breakdown for dynamic space:
> > 212,269,600 bytes for 75,893 simple-vector objects <=============
> > 12,444,736 bytes for 199,037 instance objects
> > 16,711,312 bytes for 709,352 other objects
> >
> > 241,425,648 bytes for 984,282 dynamic objects (space total)
> >
> > [snip]
> >
> > ; ==============================================
> > (2) -> )cl all
> > All user variables and function definitions have been cleared.
> > (1) -> )boot $InteractiveFrame
> >
> > |$InteractiveFrame|
> > Value = ((NIL))
> > (1) -> )lisp (sb-ext:gc :full t)
> >
> > Value = NIL
> > ; ===============================================
> >
> > (1) -> )lisp (room)
> >
> > Dynamic space usage is: 241,503,344 bytes. <=================
> > Immobile space usage is: 24,572,528 bytes (27,120 bytes overhead).
> > Read-only space usage is: 12,701,888 bytes.
> > Static space usage is: 4,464 bytes.
> > Control stack usage is: 1,984 bytes.
> > Binding stack usage is: 368 bytes.
> > Control and binding stack usage is for the current thread only.
> > Garbage collection is currently enabled.
> >
> > Breakdown for dynamic space:
> > 212,252,784 bytes for 75,885 simple-vector objects <===========
> > 12,444,416 bytes for 199,039 instance objects
> > 16,707,408 bytes for 709,070 other objects
> >
> > 241,404,608 bytes for 983,994 dynamic objects (space total)
> >
> > [snip]
> >
> > (1) ->
> >
> > Any idea what happens here and if this is what is expected?
>
> FriCAS keeps current value in variables that were not cleaned.
> Only after computing new value those variables were reassigned
> and value could be garbage collected.
>
> Attached patch clears relevant variables.
>
> --
> Waldek Hebisch
>
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