[parsec-users] parsec-users Digest, Vol 30, Issue 4

Mu-Tien Chang mtchang at umd.edu
Fri Jul 9 12:09:20 EDT 2010


Thanks a lot, Chris. Your answer really helps.

Mu-Tien

2010/7/9 <parsec-users-request at lists.cs.princeton.edu>

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>   1. Re: data footprint of facesim, raytrace, vips (Christian Bienia)
>
>
> ---------- Forwarded message ----------
> From: "Christian Bienia" <cbienia at CS.Princeton.EDU>
> To: "'PARSEC Users'" <parsec-users at lists.cs.princeton.edu>
> Date: Thu, 8 Jul 2010 12:18:31 -0700
> Subject: Re: [parsec-users] data footprint of facesim, raytrace, vips
>
> Hi Mu-Tien,
>
>
>
> Here are the answers to your questions:
>
>
>
> 1.)    The three simulation inputs for facesim are the same because it is
> very challenging to scale the face mesh in a reasonable way.
>
> 2.)    The main way to scale the runtime of raytrace is by changing the
> resolution of the output screen. That does not require different input data.
>
> 3.)    Vips has the ability to only load the parts of an image which are
> necessary to do the computations. That way the program can work on images
> that are larger than main memory.
>
>
>
> Best,
>
> Chris
>
>
>
>
>
> *From:* parsec-users-bounces at lists.cs.princeton.edu [mailto:
> parsec-users-bounces at lists.cs.princeton.edu] *On Behalf Of *Mu-Tien Chang
> *Sent:* Wednesday, July 07, 2010 2:26 PM
> *To:* parsec-users at lists.cs.princeton.edu
> *Subject:* [parsec-users] data footprint of facesim, raytrace, vips
>
>
>
> Hi All,
>
>
>
> I just did some simulation using pin tool to get data footprint of parsec
> workloads. Generally with larger input, I get larger data footprint.
> Exceptions are facesim, raytrace, and vips. For facesim, I wonder what is
> the difference between running simsmall, simmedium, and simlarge? I diff
> these three inputs but turns out they are identical. For raytrace and vips,
> does simlarge contains lots of replicated data blocks so that data footprint
> does not appear larger?
>
>
>
> Thanks a lot,
>
>
>
> Mu-Tien
>
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