[Computer-go] Computer-go Digest, Vol 41, Issue 21

Kevin Zhou kvzrock at gmail.com
Sun Jun 16 17:48:47 PDT 2013


How to get Rank Authorization for Bots to play ranked games on KGS?

Regards,

Kevin


On Sat, Jun 15, 2013 at 7:00 AM, <computer-go-request at dvandva.org> wrote:

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> Today's Topics:
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>    1. Re: AVX2 effect on go programs? (terry mcintyre)
>    2. Run Pachi on AWS EC2 Cluster (Kevin Zhou)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 14 Jun 2013 05:59:18 -0700 (PDT)
> From: terry mcintyre <terrymcintyre at yahoo.com>
> To: "computer-go at dvandva.org" <computer-go at dvandva.org>
> Subject: Re: [Computer-go] AVX2 effect on go programs?
> Message-ID:
>         <1371214758.92125.YahooMailNeo at web163505.mail.gq1.yahoo.com>
> Content-Type: text/plain; charset="utf-8"
>
> That doesn't seem to be quite right. From Intel's site:?
>
> http://software.intel.com/sites/products/documentation/studio/composer/en-us/2011Update/compiler_c/optaps/common/optaps_vec_par.htm
>
> For integer loops, the 128-bit Intel? Streaming SIMD Extensions (Intel?
> SSE) provide SIMD instructions for most arithmetic and logical operators on
> 32-bit, 16-bit, and 8-bit integer data types, with limited support for the
> 64-bit integer data type.
> Vectorization may proceed if the final precision of integer wrap-around
> arithmetic is preserved. A 32-bit shift-right operator, for instance, is
> not vectorized in 16-bit mode if the final stored value is a 16-bit
> integer. Also, note that because the Intel? SSE instruction sets are not
> fully orthogonal (shifts on byte operands, for instance, are not
> supported), not all integer operations can actually be vectorized.
> OTOH, AVX2 - Integer data types expanded to 256-bit SIMD.
>
>
> There are also some new gather operations and filtering abilities, etc,
> which might be useful. Odds are, they'll require some hand-written
> assembler.?
>
> Terry McIntyre <terrymcintyre at yahoo.com>
>
> Unix/Linux Systems Administration
> Taking time to do it right saves having to do it twice.
>
>
> >________________________________
> > From: Detlef Schmicker <ds2 at physik.de>
> >To: computer-go at dvandva.org
> >Sent: Thursday, June 13, 2013 2:56 PM
> >Subject: [Computer-go] AVX2 effect on go programs?
> >
> >
> >I wonder if anybody already compiled a mc go program for the haswell cpu
> >with auto-vectorization and avx2 enabled?
> >
> >If I understood correctly it is the first intel cpu which can vectorize
> >integer operations, and go programs have a lot of them.
> >
> >Detlef
> >
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> ------------------------------
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> Message: 2
> Date: Fri, 14 Jun 2013 23:52:52 -0500
> From: Kevin Zhou <kvzrock at gmail.com>
> To: computer-go at dvandva.org
> Subject: [Computer-go] Run Pachi on AWS EC2 Cluster
> Message-ID:
>         <
> CACCjcoozHcwMjCT7sHfehz0EEY4ghppbULO3BV0fg+0vq66GFQ at mail.gmail.com>
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>
> Is it possible to run Pachi's distributed engine on AWS EC2 Cluster?
>
> Regards,
>
> Kevin
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