From: Nala Ginrut <nalaginrut@gmail.com>
To: Jan Wedekind <jan@wedesoft.de>
Cc: Guile User <guile-user@gnu.org>
Subject: Re: AIscm array operations for Scheme
Date: Thu, 3 Aug 2017 22:53:47 +0800 [thread overview]
Message-ID: <CAPjoZofU+fePSCiD1ddqoLXHX867iWA8Qdzbqo2x=A6GOZ9+Nw@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1708030801390.8206@wedemob.home>
Looks promising! What's the plan about AIscm in the future? Is it aiming
for a library, or something research tool like Sage?
2017年8月3日 15:23,"Jan Wedekind" <jan@wedesoft.de>写道:
> Thanks.
> Currently neither. I have in mind to add some LAPACK bindings (singular
> value decomposition, eigenvalue decomposition, least squares to begin
> with). First full native floating point support needs to be implemented.
> Here is an example of a matrix vector product:
>
> (use-modules (aiscm sequence) (aiscm expression) (aiscm tensor))
> (tensor i (sum k (* (get (arr (2 3) (5 7)) i k) (get (arr 11 13) k))))
> $3 = #<sequence<int<8,unsigned>>>:
> (87 124)
>
> Floating point values currently fall back on Scheme objects:
>
> (tensor i (sum k (* (get (arr (2 3) (5 7)) i k) (get (arr 1.1 1.3)
> k))))
> $4 = #<sequence<obj>>:
> (8.7 12.4)
>
> Note that in this case the array loops are still JIT compiled. Addition
> and multiplication are handled by JIT compiling callbacks into GNU Guile
> (scm_plus, scm_product).
>
> Regards
> Jan
>
> On Thu, 3 Aug 2017, Nala Ginrut wrote:
>
> Nice work!
>> Do you use BLAS or MKL for vector operation?
>>
>>
>> 2017年8月3日 04:16,"Jan Wedekind" <jan@wedesoft.de>写道:
>>
>> Hi,
>>> I have released a new version of AIscm [1]. A Guile extension for
>>> numerical arrays and tensors. It now supports convolutions [2] and tensor
>>> operations [3]. There are packages for different versions of Debian and
>>> Ubuntu. Also thanks to Andrey Rahmatullin's sponsorship, the package is
>>> part of Debian Testing [4].
>>>
>>> Regards
>>> Jan
>>>
>>> [1] http://wedesoft.github.io/aiscm/
>>> [2] http://wedesoft.github.io/aiscm/convolution.html
>>> [3] http://wedesoft.github.io/aiscm/operation.html#tensor-operations
>>> [4] https://tracker.debian.org/pkg/aiscm
>>>
>>>
>>>
next prev parent reply other threads:[~2017-08-03 14:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-02 20:15 AIscm array operations for Scheme Jan Wedekind
2017-08-03 1:48 ` Nala Ginrut
2017-08-03 7:23 ` Jan Wedekind
2017-08-03 14:53 ` Nala Ginrut [this message]
2017-08-03 21:03 ` Jan Wedekind
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