[Halla_running] Hall A counting house computer upgrades completed

[Ole Hansen]

Hello everyone,

I just wanted to let you know that the upgrades of the Hall A counting 
house computers, announced a week ago, have been completed.

We now have four main analysis machines, aonl1-4, each with 128 threads 
and 512 GB of RAM. aonl2-4 are ca. 25% faster than aonl1. There's also a 
fifth, slower machine, aonl5, intended for auxiliary jobs.

Additionally, we have a new file server, mollerfs, whose disk, over 215 
TB, is visible under/mollerfs/work1. This is in addition to the old 
/chafs[12]/work1 disks. mollerfs is meant for MOLLER online analysis 
(prompt replay, etc.)

Feel free to start using these machines, and please let me know if you 
notice anything amiss.

Cheers,

Ole

On 12/12/25 21:17, Ole Hansen wrote:
>
> Hello everyone,
>
> sorry to spring this on you on short notice, but it's probably not a 
> big deal re ongoing work:
>
> We are planning to upgrade the hardware of the counting house machines 
> aonl2-aonl4 tomorrow afternoon, Saturday, Dec 13. The machines will be 
> down for at least a few hours, possibly into Sunday. The work disk 
> (/aonlN/work1) of each host has been backed up and will be restored 
> after the upgrade. There should be no other user data on these 
> hosts. Very brief network interruptions are possible, but unlikely. 
> We'll let you know when things are stable again.
>
> aonl1 and the DAQ and slow controls machines will stay up unless 
> something unforeseen happens.
>
> The new machines will be WAY faster than the ancient ones they 
> replace, so there's something to look forward to.
>
> We'll also get a new file server with O(200 TB) disk space. Details 
> will be shared once it is configured.
>
> Cheers,
>
> Ole
>
>
>
>
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