I need help in retrieving the sah_v7_opt svn repository. I can't retrieve it via the command line svn checkout command:

keith@Serenity:~$ svn checkout https://setisvn.ssl.berkeley.edu/trac/browser/branches/sah_v7_opt
svn: E170013: Unable to connect to a repository at URL 'https://setisvn.ssl.berkeley.edu/trac/browser/branches/sah_v7_opt'
svn: E130005: XML Parsing failed: Unexpected root element 'html'

Nor via the browser interface by using the get zip archive function on the branch web page:

Oops…
Trac detected an internal error:
TimeoutError: Unable to get database connection within 0 seconds. (OperationalError: unable to open database file)
There was an internal error in Trac. It is recommended that you notify your local Trac administrator with the information needed to reproduce the issue.

To that end, you could  a ticket.

The action that triggered the error was:

GET: /changeset/4031/branches/sah_v7_opt

I created a ticket but have not received any response yet.

I was able to reach

https://setisvn.ssl.berkeley.edu/trac/browser/branches/sah_v7_opt

without problems, and it displays as 'source:branches/sah_v7_opt@4031' - confirming checking 4031 is the current head.

Note that I am currently accessing the http:// insecure version (I had to persuade my browser to bypass the security check). The checkout command might work better with http, too, despite what the porting page says.

I tried the insecure version with checkout too.http://setisvn.ssl.berkeley.edu/trac/browser/branches/sah_v7_opt and get the same exact result.

How did you get a browser to accept http:// instead of https:// ??
I've tried both of the available browsers Chrome 73 and Firefox 66. Neither of them will allow me to enter just the unsecure version of the URL and always autocorrect it to https. Even though I tell the browser I am willing to enter a unsecure site.

Can you access it via the command line with svn checkout?

This is the result with the insecure URL:

svn checkout http://setisvn.ssl.berkeley.edu/trac/browser/branches/sah_v7_opt
svn: E170011: Repository moved temporarily to 'https://setisvn.ssl.berkeley.edu/trac/browser/branches/sah_v7_opt'

I'm using Windows Chrome, and following the 'Web interface' link on the 'porting' page gives me this warning:

Your connection is not private

Attackers might be trying to steal your information from setisvn.ssl.berkeley.edu (for example, passwords, messages or credit cards). Learn more

NET::ERR_CERT_AUTHORITY_INVALID

But there is an 'advanced' button, offering

This server could not prove that it is setisvn.ssl.berkeley.edu; its security certificate is not trusted by your computer's operating system. This may be caused by a misconfiguration or an attacker intercepting your connection.

and the option to proceed anyway. I proceeded, because I know that I'm not about to upload my credit crad details into any repository, SETI or otherwise.

Can you access it via the command line with svn checkout?

Again, because I run Windows, I'm using Tortoise SVN GUI. I used the 'update' command from my previous working copy 15 minutes ago, and it's still running.

But I've already got a new branch C:\Sources\setisvn\branches\sah_v7_opt\PetriR_0.97 - it's going through other admin stuff currently, rather than source code.

Why has Petri got folders full of server stuff like assimilator / db / splitter / validate in a v7_opt branch?

SVN update finally completed while I was busy in a meeting. Looks like I have the whole of C:\Sources\setisvn\branches\sah_v7_opt, showing a clean checkout (there are errors in other parts of the tree, which needn't concern us here).

The upload of Petri's code was r4000, by Raistmer on 06 February 2019 - no updates since then.

38MB compressed, if you want it.

I can view those pages without any issues. I just can't retrieve or download anything on those pages. The only way I can see for downloading any part of the svn repository is from the "Download in other formats:
Zip Archive" link on the bottom of any page. Using that link only gets the errors I posted previously. I don't see any other mechanism for downloading the branches on those pages unless I am completely blind. I even looked at the page source in developer mode looking for a download link and found none.

I posted the errors when I try to use the svn checkout command from the command line Terminal in the previous messages. That doesn't work either.

I need the sah_v7_opt directory so I can compile the science gpu apps for aarch64 platform.

Since I am unable to retrieve anything from the svn repository, I will take you up on your offer.

[Edit] OK. Finally figured out the correct URL to access the branches via checkout. The web interface still does not work but I just retrieved the seti_boinc and sah_v7_opt repositories via command line with svn checkout.

Thanks Richard for the offer. Not necessary now.