Lots of Download errors...

FalconFly
FalconFly
Joined: 16 Feb 05
Posts: 191
Credit: 15650710
RAC: 0
Topic 191748

Ever since the new Client Versions are released it seems that the Server for Germany/Europe is acting up (like once in the old days) and causes tons of WorkUnit Download errors.

Many WorkUnits eventually get through but it's still causing wasted bandwidth...

What gives ?

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 4273
Credit: 245206226
RAC: 13295

Lots of Download errors...

The AEI download mirror has been taken offline (see Server Status Page) on Friday for a closer analysis of the problem, so the files should be downloaded from other mirrors by the clients now (automatically). I personally doubt that it has anything to do with the Apps. The problem might, however, have been triggered by the increased traffic from work being done faster now. I know that Steffen & David are working on this.

BM

BM

Annika
Annika
Joined: 8 Aug 06
Posts: 720
Credit: 494410
RAC: 0

Just out of interest: How do

Just out of interest: How do I know which mirror I get my WUs from? Does the hostname in the messages tab tell me?

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 4273
Credit: 245206226
RAC: 13295

I've not noticed that a

I've not noticed that a client writes the complete download URL in the messages - maybe there isn't such a client or maybe I didn't notice (yet).

The list of download locations for a file can be seen in the sched_reply_einstein.phys.uwm.edu.xml file in the BOINC directory.
Here is an example for the "earth" file section from my sched_reply:
[pre]
earth_05_09
http://einstein.aei.mpg.de/download/3e9/earth_05_09
http://einstein.astro.gla.ac.uk/download/3e9/earth_05_09
http://morel.mit.edu/download/3e9/earth_05_09
http://einstein.aset.psu.edu/download/3e9/earth_05_09
http://einstein.phys.uwm.edu/download/3e9/earth_05_09
http://einstein.aei.mpg.de/download/3e9/earth_05_09
http://einstein.astro.gla.ac.uk/download/3e9/earth_05_09
http://morel.mit.edu/download/3e9/earth_05_09
http://einstein.aset.psu.edu/download/3e9/earth_05_09
http://einstein.phys.uwm.edu/download/3e9/earth_05_09
cdc8b8d950d01580fc1c8929be9e58fb
[/pre]
This tells the client to try the download servers at AEI, Glasgow, MIT, PSU, and UWM in this order. The list will be cycled if you are in a different timezone closer to another server.

BM

BM

Annika
Annika
Joined: 8 Aug 06
Posts: 720
Credit: 494410
RAC: 0

Thanks a lot. That would mean

Thanks a lot. That would mean I'm getting most of my files from AEI, since I live in Germany... luckily I didn't get any download errors.

DubbleU
DubbleU
Joined: 9 Feb 05
Posts: 6
Credit: 57440
RAC: 0

No download errors here

No download errors here (living in Germany as well). But perhaps having not nearly as many machines as FalconFly has plays a small part in this ;)

MW

.

FalconFly
FalconFly
Joined: 16 Feb 05
Posts: 191
Credit: 15650710
RAC: 0

Hm, I've been thinking about

Message 44804 in response to message 44803

Hm, I've been thinking about that as well. Odd thing is, that my Network (so far) always managed to squeeze online as 'a pack' and not causing Download errors. Don't know why only EAH is affected, but it resembles the old error seen once about a year ago.

Back then, it was a faulty mirror as well, but as soon as it was shutdown, everything was running smooth immediately. Now, I'm still seeing the errors (although the faulty mirror apparently isn't used or it's fixed)

Udo
Udo
Joined: 19 May 05
Posts: 203
Credit: 8945570
RAC: 0

I got following

I got following messages:

Quote:


5.2.13
WU download error: couldn't get input files:

l1_0190.0_S5R1
-119
MD5 check failed

The error started on saturday 25.8.2006 (18:30 UTC) until 26.8.2006 (01:30 UTC) and reoccured from 13:30 UTC until 14:10 UTC yesterday (monday 28.8.2006).
My server currently works on short WUs (3100sec computation) and has a 'connect every' value of 0.01 days -> each WU is downloaded just when it is needed.

Udo

Udo

Ingleside
Ingleside
Joined: 23 Jan 05
Posts: 33
Credit: 82104476
RAC: 1

RE: Ever since the new

Quote:

Ever since the new Client Versions are released it seems that the Server for Germany/Europe is acting up (like once in the old days) and causes tons of WorkUnit Download errors.

Many WorkUnits eventually get through but it's still causing wasted bandwidth...

What gives ?

Are you by chance running BOINC-v5.2.xx and is behind a proxy? If so, it's a good chance you've hit one of the download-bugs in older BOINC-clients, to fix upgrade to v5.4.9 or later.

Even if you're not behind a proxy, you can still be hit by the download-bug, that was finally fixed in v5.3.15. Oh, and v4.45 had another download-bug, in case anyone else is having a problem...

"I make so many mistakes. But then just think of all the mistakes I don't make, although I might."

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 4273
Credit: 245206226
RAC: 13295

There was indeed a problem

There was indeed a problem with the AEI mirror that has been found and (hopefully) fixed.

Enjoy!

BM

BM

Martin P.
Martin P.
Joined: 17 Feb 05
Posts: 162
Credit: 40156217
RAC: 0

The interesting part in this

The interesting part in this is the fact that I get the download errors only on my Windows machine. The Macs download WUs without problems.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.