[astro] Re: [wcl] FW: corrected PPAM paper draft
Travis Desell
deselt at cs.rpi.edu
Sun Nov 8 23:29:25 EST 2009
Yeah, right now I dont think we have a way to find out how many users
are using GPUs. I know how many WUs are reported from GPUs but not
how many users.
--Travis
On Nov 8, 2009, at 11:24 PM, Anthony Waters wrote:
> This contains the updated abstract and introduction. I could not find
> any numbers for how many of our users are using GPUs.
>
> Since I have to register for classes at 8:30 am tomorrow I will have
> some time to make changes in the morning, if need be
>
> On Sun, Nov 8, 2009 at 9:37 PM, Boleslaw Szymanski
> <boleslaw.szymanski at gmail.com> wrote:
>> Anthony or Travis,
>>
>> attached are modified abstract and introduction, based on zip in
>> Anthony
>> file. Could you merged it into the current source and generate new
>> pdf?
>>
>> On Sun, Nov 8, 2009 at 6:38 PM, Malik Magdon-Ismail <magdon at cs.rpi.edu
>> >
>> wrote:
>>>
>>> Hi,
>>>
>>> I read through. It looks good. I have a very minor suggestion
>>> (unless I
>>> already missed it). In the acknowledgement we may state the number
>>> of BOINC
>>> volunteers and what fraction are GPUs. It could go in the
>>> acknowledgements
>>> or somewhere in the intro.
>>> -Malik
>>>
>>> --------------------------------------------------------------------------
>>> Have Faith in Probability
>>>
>>> Malik Magdon-Ismail
>>> Associate Professor of Computer Science
>>> Rensselaer Polytechnic Institute (RPI)
>>>
>>> Office: Rm 312 Lally mail: Rm 207, Lally Building,
>>> email: magdon at cs.rpi.edu CS Department, RPI,
>>> tel: 518-276-4857 110 8th Street,
>>> fax: 518-276-4033 Troy, NY 12180-3590.
>>> web: http://www.cs.rpi.edu/~magdon
>>> key: http://www.cs.rpi.edu/~magdon/MalikMagdon-Ismail.PublicKey.asc
>>> --------------------------------------------------------------------------
>>>
>>> On Sun, 8 Nov 2009, Anthony Waters wrote:
>>>
>>>> Updated it to be a X4 940, also changed it from Phemom to a
>>>> Phenom, I
>>>> can make changes/updates until about midnight tonight (another 5-6
>>>> hours). I have class tomorrow morning so I won't be able to change
>>>> anything tomorrow.
>>>>
>>>> On Sun, Nov 8, 2009 at 4:37 PM, Andreas Przystawik
>>>> <andreas.przystawik at uni-rostock.de> wrote:
>>>>>
>>>>> Just had a short look and one eror I missed first was the CPU we
>>>>> compare
>>>>> to. It is of course a PhenomII X4 940, not a PhenomII X2 as
>>>>> claimed several
>>>>> times in the text.
>>>>> ________________
>>>>> Andreas Przystawik
>>>>> Institut für Physik
>>>>> Universität Rostock
>>>>> 18051 Rostock
>>>>>
>>>>> Tel.: +49 381 498 6815
>>>>> Fax: +49 381 498 6802
>>>>> ________________________________________
>>>>> Von: awaters1 at gmail.com [awaters1 at gmail.com] im Auftrag von
>>>>> Anthony
>>>>> Waters [watera2 at cs.rpi.edu]
>>>>> Gesendet: Sonntag, 8. November 2009 19:46
>>>>> An: astro at cs.rpi.edu
>>>>> Cc: Andreas Przystawik; Travis Desell; David Anderson
>>>>> Betreff: Re: [astro] Re: [wcl] FW: corrected PPAM paper draft
>>>>>
>>>>> Fixed the spelling of NVIDIA to be Nvidia across the paper
>>>>>
>>>>> On Sun, Nov 8, 2009 at 1:41 PM, Anthony Waters
>>>>> <watera2 at cs.rpi.edu>
>>>>> wrote:
>>>>>>
>>>>>> I've made most of the specific comment changes to get things
>>>>>> moving,
>>>>>> considering it is due 11/9 if I remember correctly.
>>>>>>
>>>>>> On Sat, Nov 7, 2009 at 3:44 PM, Malik Magdon-Ismail <magdon at cs.rpi.edu
>>>>>> >
>>>>>> wrote:
>>>>>>>
>>>>>>> Hi Travis,
>>>>>>>
>>>>>>> Can you circulate a new version.
>>>>>>>
>>>>>>> -Malik
>>>>>>>
>>>>>>>
>>>>>>> --------------------------------------------------------------------------
>>>>>>> Have Faith in Probability
>>>>>>>
>>>>>>> Malik Magdon-Ismail
>>>>>>> Associate Professor of Computer Science
>>>>>>> Rensselaer Polytechnic Institute (RPI)
>>>>>>>
>>>>>>> Office: Rm 312 Lally mail: Rm 207, Lally Building,
>>>>>>> email: magdon at cs.rpi.edu CS Department, RPI,
>>>>>>> tel: 518-276-4857 110 8th Street,
>>>>>>> fax: 518-276-4033 Troy, NY 12180-3590.
>>>>>>> web: http://www.cs.rpi.edu/~magdon
>>>>>>> key:
>>>>>>> http://www.cs.rpi.edu/~magdon/MalikMagdon-Ismail.PublicKey.asc
>>>>>>>
>>>>>>> --------------------------------------------------------------------------
>>>>>>>
>>>>>>> On Sat, 7 Nov 2009, Carlos Varela wrote:
>>>>>>>
>>>>>>>> Travis, Andreas, et al.:
>>>>>>>>
>>>>>>>> Here are my comments on the paper at:
>>>>>>>>
>>>>>>>> http://139.30.40.11/ppam2009.pdf
>>>>>>>>
>>>>>>>> I am sending them rather than editing directly to avoid
>>>>>>>> collisions...
>>>>>>>>
>>>>>>>> GENERAL COMMENTS
>>>>>>>>
>>>>>>>> - The abstract should directly talk about the main
>>>>>>>> contributions of
>>>>>>>> the
>>>>>>>> paper (mention the four specific GPU optimizations perhaps
>>>>>>>> categorized at a
>>>>>>>> high level)... INSERT SUCH A PARAGRAPH BEFORE "A 17 times
>>>>>>>> speedup..."... and
>>>>>>>> to keep size constant, perhaps REMOVE "While traditional...
>>>>>>>> As such,"
>>>>>>>>
>>>>>>>> - If feasible, it would be interesting to quantify:
>>>>>>>> - what percentage of MilkyWay at home volunteers have GPUs,
>>>>>>>> - what is the respective processing power of the GPUs
>>>>>>>> compared to
>>>>>>>> the
>>>>>>>> CPUs in the M at h project,
>>>>>>>> - what GPU types are most commonly volunteered, how many
>>>>>>>> GPUs (and
>>>>>>>> how
>>>>>>>> many CPUs) are typical per volunteer, etc.
>>>>>>>> - what is the impact of the numerical precision on the
>>>>>>>> astroinformatics
>>>>>>>> application?
>>>>>>>> - e.g., if we use DP we converge in X iterations, if we use
>>>>>>>> SP we
>>>>>>>> converge in Y iterations (Y=infinity?), etc; indeed a graph
>>>>>>>> with
>>>>>>>> precision
>>>>>>>> in the X axis and iterations to convergence in the Y axis
>>>>>>>> could help
>>>>>>>> us
>>>>>>>> precisely quantify when it is better to tradeoff precision for
>>>>>>>> speedup.
>>>>>>>>
>>>>>>>> - Future directions would be interesting to include (further
>>>>>>>> GPU
>>>>>>>> optimizations, new GPU hardware generations, better GPGPU
>>>>>>>> language
>>>>>>>> support,
>>>>>>>> GPU on BOINC, astroinformatics application, etc...)
>>>>>>>>
>>>>>>>>
>>>>>>>> SPECIFIC COMMENTS
>>>>>>>>
>>>>>>>> Section 2:
>>>>>>>>
>>>>>>>> "Distributed Computing" --> "distributed computing"
>>>>>>>>
>>>>>>>> todays --> today's
>>>>>>>>
>>>>>>>> "around 60 times difference" --> ??? I think we want to
>>>>>>>> mention
>>>>>>>> TFlops/GPU ratio and Tflops/CPU ratio directly.
>>>>>>>>
>>>>>>>> Nvidia calls his --> Nvidia calls this
>>>>>>>>
>>>>>>>> Folding at Home GPUGRID --> Folding at Home, GPUGRID
>>>>>>>>
>>>>>>>> Both cases --> Both projects
>>>>>>>>
>>>>>>>> Section 3.1.:
>>>>>>>>
>>>>>>>> Title: "different" --> "Different"
>>>>>>>>
>>>>>>>> reproducability --> reproducibility
>>>>>>>>
>>>>>>>> manufactures --> manufacturers
>>>>>>>>
>>>>>>>> "Not until the latest...square root operations" --> REWRITE
>>>>>>>> PARAGRAPH
>>>>>>>> INTO TWO--IT IS UNCLEAR
>>>>>>>>
>>>>>>>> non-coherence --> non-adherence
>>>>>>>>
>>>>>>>> This even --> On the contrary, it
>>>>>>>>
>>>>>>>> Section 3.2.:
>>>>>>>>
>>>>>>>> memory controller --> the memory controller
>>>>>>>>
>>>>>>>> und --> and
>>>>>>>>
>>>>>>>> "As the calculations... by itself" --> REWRITE PARAGRAPH INTO
>>>>>>>> TWO---IT IS
>>>>>>>> UNCLEAR
>>>>>>>>
>>>>>>>> amount of threads --> number of threads
>>>>>>>>
>>>>>>>> in flight --> technical term: define before use (and use
>>>>>>>> italics)
>>>>>>>>
>>>>>>>> neglible --> negligible
>>>>>>>>
>>>>>>>> Combine Terms, SQRT, DIV --> Use different font types (and
>>>>>>>> not
>>>>>>>> capital
>>>>>>>> letters) for these optimization names
>>>>>>>>
>>>>>>>> figure 1 --> Figure 1
>>>>>>>>
>>>>>>>> table 1 --> Table 1
>>>>>>>>
>>>>>>>> optimal --> optimized ("optimal" is too strong a word)
>>>>>>>>
>>>>>>>> require some additional --> requires some additional
>>>>>>>>
>>>>>>>> single precision --> single-precision (also apply to
>>>>>>>> double-precision,
>>>>>>>> and throughout paper)
>>>>>>>>
>>>>>>>> severely compute bound --> significantly compute-bound (or say
>>>>>>>> "communication to computation ratio is small")
>>>>>>>>
>>>>>>>>
>>>>>>>> Section 4:
>>>>>>>>
>>>>>>>> their average --> the average
>>>>>>>>
>>>>>>>> and c) and --> and c)
>>>>>>>>
>>>>>>>>
>>>>>>>> References:
>>>>>>>>
>>>>>>>> 17) "Pracniques" ---??? Is this the right title?
>>>>>>>> ----
>>>>>>>>
>>>>>>>>
>>>>>>>> One suggestion: CCGRID 2010's papers are due on November
>>>>>>>> 13th---
>>>>>>>> isn't
>>>>>>>> this venue a better target (than PPAM) for this work? It may
>>>>>>>> have
>>>>>>>> much more
>>>>>>>> visibility in the distributed computing community... just a
>>>>>>>> thought
>>>>>>>> to
>>>>>>>> consider.
>>>>>>>>
>>>>>>>> I can make another iteration on the paper (even editing it
>>>>>>>> directly
>>>>>>>> if
>>>>>>>> given the editing token) on Monday at 12noon-3pm (NY time).
>>>>>>>>
>>>>>>>> Greetings,
>>>>>>>>
>>>>>>>> - Carlos.
>>>>>>>>
>>>>>>>> ---
>>>>>>>> Carlos A. Varela <cvarela at cs.rpi.edu>
>>>>>>>> Associate Professor
>>>>>>>> Worldwide Computing Laboratory
>>>>>>>> Department of Computer Science
>>>>>>>> Rensselaer Polytechnic Institute
>>>>>>>> 110 8th Street, Troy, NY 12180, USA
>>>>>>>> http://wcl.cs.rpi.edu/
>>>>>>>> Ph: +1 (518) 276-6912 Fax: +1 (518) 276-4033 Office:
>>>>>>>> Lally 308
>>>>>>>> ---
>>>>>>>>
>>>>>>>> On Nov 6, 2009, at 7:03 PM, Andreas Przystawik wrote:
>>>>>>>>
>>>>>>>>>> Mabye link to the pdf so people can download that easily?
>>>>>>>>>
>>>>>>>>> That was in the first email I have sent to everyone (or isn't
>>>>>>>>> astro at cs.rpi.edu the right mailing list?) just before
>>>>>>>>> sending the
>>>>>>>>> zip file
>>>>>>>>> to you:
>>>>>>>>>
>>>>>>>>>> The new version is here: http://139.30.40.11/ppam2009.pdf
>>>>>>>>>
>>>>>>>>> Got it lost somehow? But if I look to my webserver log, at
>>>>>>>>> least one
>>>>>>>>> person downloaded it already (IP 74.76.53.44) ;)
>>>>>>>>>
>>>>>>>>> Andreas
>>>>>>>>>
>>>>>>>>> Von: Andreas Przystawik
>>>>>>>>> Gesendet: Freitag, 6. November 2009 21:19
>>>>>>>>> An: Travis Desell; astro at cs.rpi.edu; David Anderson
>>>>>>>>> Betreff: corrected PPAM paper draft
>>>>>>>>> Hello all!
>>>>>>>>>
>>>>>>>>> Looks like Travis accidentaly compiled the pdf with an early
>>>>>>>>> version
>>>>>>>>> of
>>>>>>>>> the third section. As he said he's quite busy with the last
>>>>>>>>> lines of
>>>>>>>>> his
>>>>>>>>> thesis and I have still 4 weeks left, I've taken the freedom
>>>>>>>>> to put
>>>>>>>>> the
>>>>>>>>> current version in and also correct a few small errors and
>>>>>>>>> polished
>>>>>>>>> some
>>>>>>>>> rough edges I found so far.
>>>>>>>>>
>>>>>>>>> The new version is here: http://139.30.40.11/ppam2009.pdf
>>>>>>>>>
>>>>>>>>> My main point of criticism left is that some sentences
>>>>>>>>> appear thrice
>>>>>>>>> in
>>>>>>>>> the text, first in the abstract, then in the introduction and
>>>>>>>>> finally in the
>>>>>>>>> summary again.
>>>>>>>>> ________________
>>>>>>>>> Andreas Przystawik
>>>>>>>>> Institut für Physik
>>>>>>>>> Universität Rostock
>>>>>>>>> 18051 Rostock
>>>>>>>>>
>>>>>>>>> Tel.: +49 381 498 6815
>>>>>>>>> Fax: +49 381 498 6802
>>>>>>>>> Von: Travis Desell [deselt at cs.rpi.edu]
>>>>>>>>> Gesendet: Freitag, 6. November 2009 08:56
>>>>>>>>> An: astro at cs.rpi.edu; Andreas Przystawik; David Anderson
>>>>>>>>> Betreff: PPAM paper draft
>>>>>>>>>
>>>>>>>>> I've attached a draft of the PPAM paper, please read and send
>>>>>>>>> comments as
>>>>>>>>> the deadline is november 9th.
>>>>>>>>>
>>>>>>>>> You can download it at:
>>>>>>>>>
>>>>>>>>> http://www.cs.rpi.edu/~deselt/ppam2009.pdf
>>>>>>>>>
>>>>>>>>> --Travis
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ----------------------------------------------------------------------------------------------------------
>>>>>>>>> Travis Desell
>>>>>>>>> <deselt @ cs.rpi.edu>
>>>>>>>>> 1-518-867-1054
>>>>>>>>> Worldwide Computing Laboratory ( http://wcl.cs.rpi.edu/ )
>>>>>>>>> MilkyWay at Home ( http://milkyway.cs.rpi.edu/ )
>>>>>>>>> Rensselaer Polytechnic Institute, 110 8th Street, Troy NY
>>>>>>>>> 12180, USA
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ----------------------------------------------------------------------------------------------------------
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>
>>
>>
>> --
>> Boleslaw Szymanski
>> Claire and Roland Schmitt Distinguished Professor of Computer Science
>> RPI, Troy, NY
>>
> <main.pdf><ppam2009.zip>
----------------------------------------------------------------------------------------------------------
Travis Desell
<deselt @ cs.rpi.edu>
1-518-867-1054
Worldwide Computing Laboratory ( http://wcl.cs.rpi.edu/ )
MilkyWay at Home ( http://milkyway.cs.rpi.edu/ )
Rensselaer Polytechnic Institute, 110 8th Street, Troy NY 12180, USA
----------------------------------------------------------------------------------------------------------
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