On 18 April 2024 21:51:34 BST, 'Martin R' via FriCAS - computer algebra system
<fricas-devel@googlegroups.com> wrote:
>OK, I think I have to give up. The InputForm consists of 23 964 324
>atoms. I guess that there is no sensible way to transmit this, right?
In-memory - just how Maxima library interface is operating.
No need for pexpect interface then.
Create a FAS module loadable into libecl,
and, well, you have a huge increase in speed of the interface.
>
>Martin
>On Thursday 18 April 2024 at 21:50:57 UTC+2 Martin R wrote:
>
>> I have now FriCAS with ECL, but I now realize that I am doing very silly
>> things in the interface between FriCAS to sage:
>> * I do an unnecessary unparse of the InputForm (this runs forever on ECL,
>> and crashes sbcl)
>> * I throw the result away
>> * I convert the InputForm into a string using a customized printer
>> * I parse the result
>>
>> Oh dear, what did I do!
>>
>> I guess that I was scared of creating a very long history in the FriCAS
>> process if I transmit the InputForm atom by atom. I guess I should cook up
>> a simple protocol to transmit an ordered tree, maybe as a Stream.
>>
>> Martin
>> On Thursday 18 April 2024 at 21:03:34 UTC+2 Nasser M. Abbasi wrote:
>>
>>> These are useful lisp commands, I did not know about them. This is what I
>>> get for my Fricas installation
>>>
>>> FriCAS Computer Algebra System
>>> Version: FriCAS 1.3.10 built with sbcl 2.3.11
>>> Timestamp: Wed Jan 10 09:37:52 PM CST 2024
>>>
>>> (1) -> )lisp (lisp-implementation-version)
>>> Value = "2.3.11"
>>> (1) -> )lisp (sb-ext:dynamic-space-size)
>>>
>>> Value = 4294967296
>>>
>>> I am also running Fricas and sagemath on VBox under windows 10. The OS is
>>> Linux Manjaro
>>>
>>> >fricas --version
>>> FriCAS 1.3.10
>>> based on sbcl 2.3.11
>>> >sage --version
>>> SageMath version 10.3, Release Date: 2024-03-19
>>> >
>>> On Thursday, April 18, 2024 at 12:01:19 PM UTC-5 axio...@yahoo.de wrote:
>>>
>>>> Hi Waldek!
>>>>
>>>> Thanks for the rapid answer!
>>>>
>>>> I have:
>>>> )lisp (lisp-implementation-version)
>>>> 2.1.11.debian
>>>> )lisp (sb-ext:dynamic-space-size)
>>>> 1073741824
>>>> )version
>>>> FriCAS 2022-07-16 compiled at Fr 12 Aug 2022 15:17:27 CEST
>>>>
>>>> I'm currently compiling the ECL version.
>>>>
>>>> Unfortunately, because of the MacOS problem (
>>>> https://github.com/sagemath/sage/pull/37041) most sage users won't use
>>>> the newest FriCAS. So I'll first check whether that makes a difference.
>>>>
>>>> Martin
>>>>
>>>> On Thursday 18 April 2024 at 18:11:21 UTC+2 Waldek Hebisch wrote:
>>>>
>>>>> On Thu, Apr 18, 2024 at 08:45:53AM -0700, 'Martin R' via FriCAS -
>>>>> computer algebra system wrote:
>>>>> > I started to look into one of the problems
>>>>> > (https://github.com/sagemath/sage/issues/37813):
>>>>> >
>>>>> > res := integrate((x^2+1)^(1/2)/(x^2+(x+(x^2+1)^(1/2))^(1/2)), x);
>>>>> >
>>>>> > works nicely, but converting to InputForm (which I use to do the
>>>>> > translation to sage) fails. Is there a good reason for that - i.e.,
>>>>> is
>>>>> > this a bug, or just a problem with memory?
>>>>> >
>>>>> > Best wishes,
>>>>> >
>>>>> > Martin
>>>>> >
>>>>> > (2) -> inform := res :: INFORM
>>>>> >
>>>>> > Heap exhausted during garbage collection: 0 bytes available, 16
>>>>> requested.
>>>>> <snip>
>>>>> > Total bytes allocated = 1072734880
>>>>> > Dynamic-space-size bytes = 1073741824
>>>>>
>>>>> For me it works. The result is big for humans, but should be no
>>>>> problem for modern computers. I am using FriCAS trunk build
>>>>> using sbcl-1.2.4 (currently with 3Gb limit). Tried also version
>>>>> with 2Gb limit and sbcl-2.2.9 with 1Gb limit. Note
>>>>> I did:
>>>>>
>>>>> res := integrate((x^2+1)^(1/2)/(x^2+(x+(x^2+1)^(1/2))^(1/2)), x);
>>>>> ii := res::InputForm;
>>>>>
>>>>> that is I am _not_ printing resulting InputForm. But I also
>>>>> separately printed the InputForm, it works, just is slow when
>>>>> printing to terminal and useless because the result is much
>>>>> bigger than terminal scrollback buffer.
>>>>>
>>>>> --
>>>>> Waldek Hebisch
>>>>>
>>>>
>
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