Posts by mippi

1) Message boards : Number crunching : Dell Precision T5500 dual CPU problem (Message 102178)
Posted 5 Jul 2021 by mippi
Post:
Thanks for your reply, I performed benchmark tests and I will see some results in two days. Target time in my case is 36h and I don't want to change, because I have to minimise network traffic, so at least now it has to stay as it is.
2) Message boards : Number crunching : Dell Precision T5500 dual CPU problem (Message 102168)
Posted 4 Jul 2021 by mippi
Post:
I have a Dell Precision T5500 workstation with Xeon X5690 (6 cores 12 threads). I used the computer with Rosetta for a few months achieve average points >9k. Recently I decided to buy a second CPU and upgrade RAM to 36GB. After installing the second CPU, I started processing 24 jobs at the same time, but my average points stay at nearly the same level. When I analyse points for each tasks they are more less 50% of the pervious achievements. So, it seems that I can process two times more tasks, but I spend 2x less computing power on each task. I upgraded BIOS and I tested two memory access models and it is still the same. Both CPUs work at 100% power, uptime shows >24, so from operating system point of view everything seems to be OK, but it is not. I did not change anything in the boinc/rosetta config files, because I could not find any place which I should change for dual CPI.
Has anybody found similar problem and how it was solved? Any help would be very appreciated.
3) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 100912)
Posted 31 Mar 2021 by mippi
Post:
I use a Linux workstation with 12GB memory and 12 cores. I have never seen such message before.
With 12 cores you need more than 16GB of RAM- a Single Task can require over 4GB of RAM, although 1 to 1.3GB is more common.
For a while now the memory requirements for Tasks have been very low, but we did get a batch of work that required over 1GB of RAM shortly before we ran out of work for a while there.


I have a few workstations with similar parameters and they work perfectly fine for many years, so I don't think I need 16GB memory. Moreover, Rosetta should be a project which is run in the background. So, I should not equip my computer to meet Rosetta requirements, but Rosetta should try to use my resources.
4) Message boards : Number crunching : Problems and Technical Issues with Rosetta@home (Message 100884)
Posted 30 Mar 2021 by mippi
Post:
I have the same problem: "Message from server: Rosetta needs 6675.72MB RAM but only 3432.76MB is available for use."
I use a Linux workstation with 12GB memory and 12 cores. I have never seen such message before.
5) Message boards : News : Thank you! (Message 99637)
Posted 11 Nov 2020 by mippi
Post:
It would be very useful to warn about breaks with some details including how long a break can take. Then it is better to plan use computing power for other projects. Better communication also shows respect to people who spend own time and money to help you.






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