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Hi Estani, <br>
<br>
I also see some problems while trying to replicate cmip5 data from
BADC. Some files gave authorization problems (403), some are listed
in thredds but they do not exist. <br>
<br>
For example, can you access this file?<br>
<font face="Courier New, Courier, monospace"><a class="moz-txt-link-freetext" href="http://cmip-dn.badc.rl.ac.uk/thredds/fileServer/esg_dataroot/cmip5/output1/MOHC/HadGEM2-ES/rcp85/day/atmos/day/r1i1p1/v20110127/prc/prc_day_HadGEM2-ES_rcp85_r1i1p1_20301201-20351130.nc">http://cmip-dn.badc.rl.ac.uk/thredds/fileServer/esg_dataroot/cmip5/output1/MOHC/HadGEM2-ES/rcp85/day/atmos/day/r1i1p1/v20110127/prc/prc_day_HadGEM2-ES_rcp85_r1i1p1_20301201-20351130.nc</a></font><br>
<br>
I just parse everything from the thredds catalog. Here is how I am
getting files (see the script below for 12 streams). How do you use
wget?<br>
<br>
If anybody wants to try gridftp downloads, nersc has cmip3 data
published with gridftp and http urls.<br>
<br>
<br>
<font face="Courier New, Courier, monospace">wget -nv
<a class="moz-txt-link-freetext" href="http://cmip-dn.badc.rl.ac.uk/thredds/esgcet/catalog.html">http://cmip-dn.badc.rl.ac.uk/thredds/esgcet/catalog.html</a> -O- |
grep output1 | awk 'BEGIN{FS="="}{print $4}'| sed "s/'/ /g"|awk
'{print <a class="moz-txt-link-rfc2396E" href="http://cmip-dn.badc.rl.ac.uk/thredds/esgcet/">"http://cmip-dn.badc.rl.ac.uk/thredds/esgcet/"</a> $1}'| xargs
-P 12 -r -n 1 wget -nv -r --level 2
--certificate=/tmp/x509up_u48731 --private-key=/tmp/x509up_u48731
--ca-directory=~/.globus/certificates --save-cookies=cookie
--load-cookies=cookie</font><br>
<br>
<br>
<br>
<br>
<br>
<br>
On 03/03/2011 09:38 AM, Estanislao Gonzalez wrote:
<blockquote cite="mid:4D6FD21C.1020808@zmaw.de" type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
Indeed it will Rachana.<br>
<br>
I'm just performing a test (or was, as it's not working anymore
after 3TB... because of some technical difficulties :-) to see how
good/bad this is. And it was not bad at all (while it worked).<br>
<br>
I had quite some problems with guc too, so I'm just trying
different possibilities out.<br>
<br>
And I see the SSL double redirection now, nice :-)<br>
<br>
I think Stephen is already at that anyway, there were some minimal
problems with the publication.<br>
<br>
And a single wget connection is now running at 12MB/s.<br>
<br>
Thanks,<br>
Estani<br>
<br>
Am 03.03.2011 18:26, schrieb Rachana Ananthakrishnan:
<blockquote
cite="mid:4D504901-4980-4472-87E9-1C09FCCBDA48@mcs.anl.gov"
type="cite"><br>
<div>
<div>On Mar 3, 2011, at 11:23 AM, Estanislao Gonzalez wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div bgcolor="#ffffff" text="#000000"> Hi Rachana,<br>
<br>
yes the the only data that can be downloaded at the moment
is the one published at BADC and is http only... <br>
well actually that I think it again, if the user sends a
certificate it means it got redirected to an SSL end
point, right? Is he then redirected back to the original
or is the connection being made via SSL? I'm not sure
now...<br>
<br>
</div>
</blockquote>
<div><br>
</div>
Data is download via HTTP, the redirection to SSL is to verify
identity of the user with certificates. </div>
<div><br>
</div>
<div>I am reaching out to the various site administrators to
understand barriers for providing a GridFTP servers for this.
It appears to me that your experiment of replicating TBs of
data would benefit from a system that is built with such use
cases as focus. </div>
<div><br>
</div>
<div>Thanks,</div>
<div>Rachana</div>
<div><br>
</div>
<div>
<blockquote type="cite">
<div bgcolor="#ffffff" text="#000000"> Thanks,<br>
Estani<br>
<br>
Am 03.03.2011 17:52, schrieb Rachana Ananthakrishnan:
<blockquote
cite="mid:0153FEE9-2276-4047-A134-9FFCF7C6723F@mcs.anl.gov"
type="cite">Estani,
<div><br>
</div>
<div>Are all these numbers using a HTTP based download?</div>
<div><br>
</div>
<div>Rachana</div>
<div><br>
</div>
<div>
<div>
<div>On Mar 3, 2011, at 5:13 AM, Estanislao Gonzalez
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div bgcolor="#ffffff" text="#000000"> Hi,<br>
<br>
by Michael suggestion I started a page in the <a
moz-do-not-send="true" href="http://esgf.org/">esgf.org</a>
wiki were we could write our measurement
regarding CMIP5 federation.<br>
It is not intended for the technical staff, so
don't complain about it being too simplified :-)<br>
On the contrary, it is intended to be a very
first and rough approximation to what's
happening in the cloud by allowing everyone in 5
sec to write a measurement down.<br>
<br>
Everyone has write access to this and if we see
the necessity we could evolve it into something
more detailed, but which will certainly leave
the lay users outside.<br>
<br>
And the link:<br>
<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://esgf.org/wiki/Cmip5Status/Datarates">http://esgf.org/wiki/Cmip5Status/Datarates</a><br>
<br>
Does someone else find this useful? Any
comments?<br>
<br>
Thanks,<br>
Estani<br>
<br>
Am 03.03.2011 09:04, schrieb Estanislao
Gonzalez:
<blockquote cite="mid:4D6F4B8A.4080509@zmaw.de"
type="cite"> Hi Karl,<br>
<br>
I'm currently testing the replication via wget
and got an average of 350 Mbps (around 40MB/s)
with 7 parallel streams in the last 14 hours.
I've already downloaded 2TB.<br>
<br>
So I guess the problem is across the Atlantic.
I'd suggest to start many more parallel
streams.<br>
<br>
In any case I think this might be caused by
some problems/congestion in intermediate
networks. The network throughput to ECMWF
*might* not be comparable because of the
network architecture, e.g. intermediate
proxies, firewalls, etc. But a 10x speed up
might be of no use anyway as downloading 1TB
in 2 Months seems hardly to be an option...<br>
<br>
When we all have the data replicated worldwide
though, it will be possible to download from
all 3 servers at the same time, which will
more than double the speed from this side of
the ocean, and will be a considerable speed up
from yours, although probably not as much
(don't nail me on this, I'll deny it
vehemently <- this is not my writing :-)<br>
<br>
Anyway, this being said, the rest should be
answered by BADC directly.<br>
<br>
Thanks,<br>
Estani<br>
<br>
Am 03.03.2011 02:26, schrieb Karl Taylor:<br>
<span style="white-space: pre;">> this
should<br>
have<br>
<br>
been sent to<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:go-essp-tech@ucar.edu">go-essp-tech@ucar.edu</a><br>
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> <br>
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> sorry about that.<br>
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> <br>
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> Karl<br>
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> <br>
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<br>
<br>
<br>
> -------- Original Message --------<br>
Subject:<br>
<br>
download rates<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
Date:<br>
<br>
<br>
<br>
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<br>
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<br>
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<br>
> Wed, 2 Mar 2011 16:43:42 -0800 From:
Karl<br>
Taylor<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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<br>
<br>
> <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:taylor13@llnl.gov"><taylor13@llnl.gov></a><br>
<br>
<br>
<br>
To: <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:esg-support@earthsystemgrid.org">esg-support@earthsystemgrid.org</a><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
Grid<br>
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<br>
<br>
> <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:esg-support@earthsystemgrid.org"><esg-support@earthsystemgrid.org></a><br>
<br>
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> <br>
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> <br>
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> <br>
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> Hi all,<br>
<br>
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> <br>
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> When I download a 25 MB CMIP5 file from<br>
BADC<br>
<br>
using the wget<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
method: *<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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> it took 35 sec to get started * then it<br>
<br>
downloaded at an<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
average rate<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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> of 1.1 MB/min<br>
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> <br>
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<br>
> When I download the same file using the<br>
point and<br>
<br>
click<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
method: * it<br>
<br>
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<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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> took 20 sec to get started * then it<br>
downloaded<br>
<br>
at an<br>
<br>
<br>
<br>
average<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
rate of<br>
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> 1.4 MB/min<br>
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> <br>
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> When I download 4 files simultaneously<br>
(in<br>
<br>
parallel) using<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
the click<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
> method, I get somewhat slower download<br>
rate per<br>
<br>
file, so<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
somewhat<br>
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<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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> less than 4 times the data transfer
rate<br>
I would<br>
<br>
have<br>
<br>
<br>
<br>
gotten<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
> downloading them in series.<br>
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> <br>
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<br>
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> Note that at 1 MB/min, I could download
1<br>
GB in<br>
<br>
about 17<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
hours or 1<br>
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> TB (i.e., about 1/1000 of the entire<br>
archive) in<br>
<br>
about 2<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
years.<br>
<br>
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> <br>
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<br>
<br>
<br>
<br>
<br>
<br>
> Any way to speed this up some? (A<br>
colleague here<br>
<br>
downloads<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
files at<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
> about 10 times this rate from ECMWF.)<br>
<br>
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> <br>
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<br>
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<br>
<br>
<br>
<br>
<br>
<br>
> Note that I haven't checked how fast<br>
download<br>
<br>
rates are<br>
<br>
<br>
<br>
from<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
nodes<br>
<br>
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<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
> published to our (PCMDI's) gateway
(since<br>
they<br>
<br>
are not yet<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
publicly<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
> available).<br>
<br>
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> <br>
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<br>
<br>
<br>
<br>
<br>
> Best regards, Karl<br>
<br>
<br>
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> <br>
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> <br>
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> <br>
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> <br>
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<br>
><br>
_______________________________________________<br>
<br>
<br>
<br>
GO-ESSP-TECH<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
mailing<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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<br>
<br>
<br>
<br>
<br>
<br>
> list <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:GO-ESSP-TECH@ucar.edu">GO-ESSP-TECH@ucar.edu</a><br>
<br>
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<br>
<br>
<br>
<br>
> <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://mailman.ucar.edu/mailman/listinfo/go-essp-tech">http://mailman.ucar.edu/mailman/listinfo/go-essp-tech</a></span><br>
<br>
<br>
-- <br>
Estanislao Gonzalez<br>
<br>
Max-Planck-Institut für Meteorologie (MPI-M)<br>
Deutsches Klimarechenzentrum (DKRZ) - German
Climate Computing Centre<br>
Room 108 - Bundesstrasse 45a, D-20146 Hamburg,
Germany<br>
<br>
Phone: +49 (40) 46 00 94-126<br>
E-Mail: <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:estanislao.gonzalez@zmaw.de">estanislao.gonzalez@zmaw.de</a>
<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Estanislao Gonzalez
Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany
Phone: +49 (40) 46 00 94-126
E-Mail: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:estanislao.gonzalez@zmaw.de">estanislao.gonzalez@zmaw.de</a> </pre>
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<div>Rachana Ananthakrishnan</div>
<div>Argonne National Lab | University
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<pre class="moz-signature" cols="72">--
Estanislao Gonzalez
Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany
Phone: +49 (40) 46 00 94-126
E-Mail: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:estanislao.gonzalez@zmaw.de">estanislao.gonzalez@zmaw.de</a> </pre>
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font-size: medium;"><span class="Apple-style-span"
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separate; color: rgb(0, 0, 0); font-family: Helvetica;
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orphans: 2; text-indent: 0px; text-transform: none;
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font-size: medium;">
<div style="word-wrap: break-word;"><span
class="Apple-style-span" style="border-collapse:
separate; color: rgb(0, 0, 0); font-family:
Helvetica; font-size: medium; font-style: normal;
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letter-spacing: normal; line-height: normal;
orphans: 2; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2;
word-spacing: 0px;">
<div style="word-wrap: break-word;">
<div>Rachana Ananthakrishnan</div>
<div>Argonne National Lab | University of
Chicago</div>
</div>
</span></div>
</span></div>
</span></span> </div>
<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Estanislao Gonzalez
Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany
Phone: +49 (40) 46 00 94-126
E-Mail: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:estanislao.gonzalez@zmaw.de">estanislao.gonzalez@zmaw.de</a> </pre>
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