Steel Bank Common Lisp

On 5 April 2012 18:28, Eugene Tyurin <eugene@...> wrote:

> Is it possible to increase heap while using --script option?

Yes and no.

Strictly speaking, you can combine --dynamic-space-size with --script,
but on most operating systems shebang lines can only use a single
argument, so you can't do so in an actual #! script...

Some workarounds:

* Build SBCL with a bigger default dynamic space. (See INSTALL for details.)

* Save an SBCL executable with a bigger dynamic space:

    sbcl --dynamic-space-size 4Gb --no-userinit --no-sysinit

    (save-lisp-and-die "sbcl-big" :executable t :save-runtime-options t)

* Use trampoline script:

  sbcl4gb:

  #!/bin/sh
  exec sbcl --dynamic-space-size 4Gb $@

  Your script:

  $!/bin/sbcl4gb --script
  ...

> Recently my SBCL scripts started getting "Heap exhausted, game over" errors.

This is probably due to shrinking of the default dynamic space in last
November: the old default spaces were so big that it was relatively
easy to have a rogue SBCL process exceeding the physical memory and
have the whole system slow down due thrashing, or have the OOM killer
hit.

Cheers,

 -- Nikodemus

Nikodemus Siivola <nikodemus@...> writes:

> On 5 April 2012 18:28, Eugene Tyurin <eugene@...> wrote:
>
>> Is it possible to increase heap while using --script option?
>
> Yes and no.
>
> Strictly speaking, you can combine --dynamic-space-size with --script,
> but on most operating systems shebang lines can only use a single
> argument, so you can't do so in an actual #! script...
>
> Some workarounds:
>
> * Build SBCL with a bigger default dynamic space. (See INSTALL for details.)
>
> * Save an SBCL executable with a bigger dynamic space:
>
>     sbcl --dynamic-space-size 4Gb --no-userinit --no-sysinit
>
>     (save-lisp-and-die "sbcl-big" :executable t :save-runtime-options t)
>
> * Use trampoline script:
>
>   sbcl4gb:
>
>   #!/bin/sh
>   exec sbcl --dynamic-space-size 4Gb $@
>
>   Your script:
>
>   $!/bin/sbcl4gb --script
>   ...

JFYI, this doesn't work. Interpreter has to be binary.


-- 
HE CE3OH...

On 6 April 2012 23:27, Aleksej Saushev <asau@...> wrote:

>> * Use trampoline script:

> JFYI, this doesn't work. Interpreter has to be binary.

My bad, I completely forgot that -- the trick is to use eg.
/usr/bin/env as a middleman:

> cat sbcl-tramp
#!/bin/sh
exec sbcl --dynamic-space-size 4Gb --script $@
[nikodemus@...:~]
> cat foo
#!/usr/bin/env sbcl-tramp
(write-line "OK")
[nikodemus@...:~]
> ./foo
OK

Cheers,

 -- Nikodemus

On 04/06/2012 03:27 PM, Aleksej Saushev wrote:
> Nikodemus Siivola<nikodemus@...>  writes:
>
>> * Use trampoline script:
>>
>>    sbcl4gb:
>>
>>    #!/bin/sh
>>    exec sbcl --dynamic-space-size 4Gb $@
>>
>>    Your script:
>>
>>    $!/bin/sbcl4gb --script
>>    ...
> JFYI, this doesn't work. Interpreter has to be binary.

Actually, it does - just with a twist.

#!/bin/sh
/usr/bin/sbcl --dynamic-space-size 4096 --script myscript.lisp $*
##

sbcl is smart enough to ignore the first shebang line in myscript.lisp 
even when it's invoked like the above. *posix-argv* come across just 
file as well.

-- Eugene.

On Fri, 2012-04-06 at 15:55 -0500, Eugene Tyurin wrote:
> 
> On 04/06/2012 03:27 PM, Aleksej Saushev wrote:
> > Nikodemus Siivola<nikodemus@...>  writes:
> >
> >> * Use trampoline script:
> >>
> >>    sbcl4gb:
> >>
> >>    #!/bin/sh
> >>    exec sbcl --dynamic-space-size 4Gb $@
> >>
> >>    Your script:
> >>
> >>    $!/bin/sbcl4gb --script
> >>    ...
> > JFYI, this doesn't work. Interpreter has to be binary.
> 
> Actually, it does - just with a twist.
> 
> #!/bin/sh
> /usr/bin/sbcl --dynamic-space-size 4096 --script myscript.lisp $*
> ##

Unless you know what you're doing, always use "$@" instead of unquoted
$@ or $*, otherwise bad things will happen if one of the arguments
contains spaces

-- 
Stelian Ionescu a.k.a. fe[nl]ix
Quidquid latine dictum sit, altum videtur.
http://common-lisp.net/project/iolib

Eugene Tyurin <eugene@...> writes:

> On 04/06/2012 03:27 PM, Aleksej Saushev wrote:
>> Nikodemus Siivola<nikodemus@...>  writes:
>>
>>> * Use trampoline script:
>>>
>>>    sbcl4gb:
>>>
>>>    #!/bin/sh
>>>    exec sbcl --dynamic-space-size 4Gb $@
>>>
>>>    Your script:
>>>
>>>    $!/bin/sbcl4gb --script
>>>    ...
>> JFYI, this doesn't work. Interpreter has to be binary.
>
> Actually, it does - just with a twist.
>
> #!/bin/sh
> /usr/bin/sbcl --dynamic-space-size 4096 --script myscript.lisp $*
> ##

This is exactly what I told, interpreter has to be binary, like /bin/sh,
script doesn't work.

> sbcl is smart enough to ignore the first shebang line in myscript.lisp 
> even when it's invoked like the above. *posix-argv* come across just 
> file as well.

By the way, the idiom is using ${1:+"$@"} in such cases, $@ will bring you
unpleasant surprise one day.


-- 
HE CE3OH...