On one of my hosts which is equipped with 2 CPUs Intel Xeon E5 2667 v4 (8 cores + 8 HT each), 128GB ramdisk + 128GB system RAM, ATMMLs stopped being downloaded after I had started 12 "Theory" tasks from LHC 2 days ago.
At this point, the free space on the ramdisk is 34GB (The setting for disc usage in Boinc is "leave 2GB free"), and free space on the system RAM is about 90GB (the setting for RAM in Boinc is "use max. 90%, a Theory task needs max. 1,5GB RAM).
So, there should be plenty of resources left for having an ATMML running (as it used to be the case all time long, until 2 days ago).

My question now is: does anyone know what other/extra resources requirements come with these ATMML tasks?
Or is there any other "trap" I am running into, without realizing?

P.S.: I am aware that the server status page is showing zero unsent tasks. Still, all my other hosts succeed to download a new ATMML within 1-2 hours after the previous one was uploaded. And this has been the case with this host here also - until 2 days ago.

No hints from the event log?

The only change I had to make about a month ago for some tasks was this: Disk: use at most 1000 GB

I think I tripled it.

My 2 cents.

No hints from the event log?

The only change I had to make about a month ago for some tasks was this: Disk: use at most 1000 GB

I think I tripled it.

My 2 cents.

No hints in the event log. It only says "no tasks available for ATMML" (which is, of course true for some time; but, as I said, my other hosts could download tasks after short time once the previous one got finished).

What exectly was the reason for making the change you mention?

I either got a notice that there wasn't room or I kept trying things to get a task.

My latest task only takes up about ~100 MB but it seemed like the server wasn't getting good info about my system and wasn't letting tasks in. I don't have 1000 GB available!

I either got a notice that there wasn't room or I kept trying things to get a task.

My latest task only takes up about ~100 MB but it seemed like the server wasn't getting good info about my system and wasn't letting tasks in. I don't have 1000 GB available!

thanks a lot for your hint - it worked :-)))
I changed to "don't use more than 1000GB" - and after about 10 minutes a task came in.
This setting is really strange, isn't it? My system never could use more than 1000GB anyway, as the ramdisk is only 128GB.

So, as you say: the server obviously doesn't get correct info about the host.

Great news.