Sek is the master of this subject but think it would be wise to clear your cache, uninstall, then reinstall to insure it installs properly. But Sek probably knows the commands to do this.

Well, under Windows atleast it's fairly easy to separate the slots-directory and the projects-directory, and it's strange if this doesn't also work under Linux...

Now, I'm not running Linux, but something like this should probably work in a command-window, to move the slots-directory.
Note, make sure BOINC is fully stopped before trying this:

mv /var/lib/boinc-client/slots /something/boinc_data/slots
mkdir /var/lib/boinc-client/slots
ln -s /something/boinc_data/slots /var/lib/boinc-client/slots 

Note, apparently the ln-command wants things backward, so instead of source -> destinatination like for moving files and so on, it's destination <- from-point.

Also, as already noted I'm not running Linux, so before someone tries this I would recommend to make a backup, or finish all work on client before trying it.


Under Windows 7, the similar would be something like this:
1: Stop BOINC.
2: Uninstall BOINC, to not run into any access-rights-problems.
3: Move slots-directory from c:\programdata\boinc\slots to example d:\boinc and in the process creating d:\boinc\slots. (again due to access-rights)
4: Open a cmd-window, with "Run as Administrator"-privileges. Type this command:

mklink /d c:\programdata\boinc\slots d:\boinc\slots

5: If no error-message, re-install BOINC & re-start BOINC.

Note, c:\programdata\boinc\slots must not be present to use mklink to create the link to another directory.

Note, if a program isn't aware the physical location is different from the supplied path, it will incorrectly detect free disk-space. Meaning, in the example, if c:\ has 0.5 GB free disk space while d:\ has 1 TB+ free disk space, it's a good chance BOINC will give a "not enouth free disk space" to download a CEP2-task demanding 1 GB+ free space.

Similarly, if c:\ has 10 GB+ free space but D:\ has only 50 MB free space, BOINC will happily allow you to download the CEP2-task, but it will crash on startup giving most likely a different error-message than "out of disk-space".

As long as both c:\ and d:\ has enough free disk space, I'm not aware of any problems doing this. Afterall, even old dos-programs never heard about "software links" or "Reparse points" will happily run error-free.

Older windows-versions like windows-2000 did not include mklink, but these versions can use linkd.exe (chances are must download it) to make "Reparse points" instead of soft-links. Not sure if Vista also included mklink.


Now, if moving slots-directory to another hd would give any speed-advantage or not is another matter, but atleast it's doable for anyone wanting to test this out. Atleast in my experience, CEP2 still crapped-out even got a two-disk RAID just for the slots-directory to play with.

If my recollection isn't too fuzzy the corruption came from some users trying to be "clever" by linking individual files, forgetting that while two files could be the same at start of task, this didn't need to be the case later in the task...

Placing the whole slots-directory another location on the other hand works with no corruption on CEP2-tasks, atleast under Windows.

While putting the slots-directory on a separate hd did shave-off the initial startup-time of CEP2-tasks with some seconds, as already mentioned this didn't fix the 6466 reasons for CEP2 to still crap-out.

Andrew, if not already aware, when a task is set up in a /slots/xx the data task files + a copy of the science application is then copied there and processed from there. BOINC does this to ensure per-task integrity, so you can have as many of the same run concurrent in their own memory segment. If understanding correctly then your noexec partition would not be an option the way BOINC works.