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MD5 errors on all downloads

MD5 errors on all downloads

Questions and Answers : Windows : MD5 errors on all downloads
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old_user625990

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Message 41633 - Posted: 13 Feb 2011, 22:37:13 UTC
Last modified: 13 Feb 2011, 22:38:07 UTC

Newly upgraded machine (Win7); reinstalled BOINC and reattached to climateprediction.net. Some 20 tasks have been downloaded in the last few days: every one was immediately rejected because the MD5 checksum was wrong. Sample:

14/02/2011 11:19:27 a.m. climateprediction.net Started download of HadISST_SI_N96_1984_12_1987_01f.gz
14/02/2011 11:19:41 a.m. climateprediction.net Finished download of HadISST_SI_N96_1984_12_1987_01f.gz
14/02/2011 11:19:41 a.m. climateprediction.net [error] MD5 check failed for HadISST_SI_N96_1984_12_1987_01f.gz
14/02/2011 11:19:41 a.m. climateprediction.net [error] expected 04a664d6cd665a78df9bc1af5f279ee8, got e3772a7460cce89d78b3ebbd78d4c7bc
14/02/2011 11:19:41 a.m. climateprediction.net [error] Checksum or signature error for HadISST_SI_N96_1984_12_1987_01f.gz

So far, I have not got any climate work that I can use, so I would welcome any suggestions. (Another BOINC project has been downloading and running work successfully the whole time.)

Paul
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peterfilla

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Message 41664 - Posted: 25 Feb 2011, 14:16:14 UTC

I get the same error on all tasks - stopped downloading !
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(Ryle)

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Message 41665 - Posted: 25 Feb 2011, 15:37:06 UTC

Same problems here, on a Vista64 and a XP32 machines. Found that it also happened on cosmology, so I suspected it had something to with using a proxy on my firewall. I set the boinc clients to not use the proxy, and i managed to download a unit from climate. Sadly my quota for today is used up, so I don't know if it is just a fluke that this one unit succeeded. (It was the xp32 machine that got it.) I will know tomorrow if there are more coming, then it will be safe to assume that the proxy somehow corrupts the units md5 checksum. (It's a linux based firewall, and i use the setting http_1_0 in cc_config).

I don't know if it helps you guys, but I thought it was worth mentioning. Will return tomorrow, if there are still problems or not.
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peterfilla

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Message 41671 - Posted: 25 Feb 2011, 17:16:43 UTC

My system is Win XP Pro 32bit, no proxy.
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Profile Thyme Lawn
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Message 41672 - Posted: 25 Feb 2011, 18:25:02 UTC
Last modified: 25 Feb 2011, 18:25:33 UTC

The CPDN download files are mirrored to 3 different servers.

I've just run a browser test on the file Paul quoted. Although I was able to download the identical file from all 3 one of them only starts the download about 1 time in 3. That might not be related to the problem, but I'll pass the details on.
"The ultimate test of a moral society is the kind of world that it leaves to its children." - Dietrich Bonhoeffer
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(Ryle)

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Message 41679 - Posted: 26 Feb 2011, 7:26:12 UTC

Thanks Thyme.

It still occurs for my pc's, but managed to get 1 unit on the vista pc. So not proxy related here.
Maybe the servers need a check up?
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Les Bayliss
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Message 41680 - Posted: 26 Feb 2011, 8:28:15 UTC - in response to Message 41679.  

As per the News thread, they're getting it on Monday.


Backups: Here
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Richard Haselgrove

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Message 41681 - Posted: 26 Feb 2011, 12:46:16 UTC

I think this is most likely to be a faulty checksum generated for the file when it was created.

Like Paul, I got a climateprediction.net [error] expected 202c65ba6685e55e6c0f237fa2558407, got 0609d7dbb9e71618fd60f27651c4e2e0

I downloaded a second copy of the file, and confirmed that both copies had an MD5 of 0609d7dbb9e71618fd60f27651c4e2e0

When I put that into client_state.xml as the 'expected' MD5 for BOINC to use, and cleaned some colateral damage, the task runs seemingly as normal.
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old_user625990

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Message 41683 - Posted: 27 Feb 2011, 20:26:09 UTC - in response to Message 41681.  

If just one or two items had been bad, I would have assumed it was a genuinely bad checksum. But I did discover that I had set the http proxy for my firewall, but not a SOCKS proxy. When I set the SOCKS proxy also, everything started working normally.
The trouble with errors like this is that one never knows if the solution was just a coincidence. Maybe the servers just started sending me good work units at that time.
Whatever the cause, I am happy now. :)

Paul
PaulVD
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JugNut

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Message 45780 - Posted: 30 Mar 2013, 7:09:01 UTC
Last modified: 30 Mar 2013, 7:21:02 UTC

Sorry wrong thread :)
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Questions and Answers : Windows : MD5 errors on all downloads

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