1) Message boards : Number crunching : Double your task throughput on Linux (Message 4645)
Posted 21 hours ago by Profile Keith Myers
Post:
No, you can't update the glibc library via any package manager. It is tied too closely to the kernel and other libraries. The main problem is all the symbol libraries have to be updated for EVERY piece of software on the host. Just not realistically doable.

The 2.31 glibc library is totally sufficient. I have not noticed any noticeable performance gain for hosts running newer distros with higher glibc versions.

Whatever was in the 2.31 glibc library that the Universe apps liked, it still is present in later versions but they produce no significant improvements over 2.31.
2) Message boards : Number crunching : Upload of WUs failed (Message 4643)
Posted 1 day ago by Profile Keith Myers
Post:
When you are having upload issues all you have to do to see the cause is navigate to the server status page https://universeathome.pl/universe/server_status.php and look at the number workunits awaiting assimilations and workunits awaiting deletions.
If the numbers are over single or double digits, the uploads will be slow and stalled out while the server is busy accessing the database.
3) Message boards : Number crunching : Double your task throughput on Linux (Message 4642)
Posted 1 day ago by Profile Keith Myers
Post:
When comparing Mint to Ubuntu, make sure both are running a glibc library of at least 2.31.

We noticed the speedup was specific to the glibc library when running Ubuntu 18.04 with kernel 5.4 and glibc 2.29 against Ubuntu 20.04 with kernel 5.4 and glibc library 2.31. So even with the kernel versions being exactly the same, it was the glibc version that mattered that caused the significant speedup in Universe tasks.
4) Message boards : Number crunching : Double your task throughput on Linux (Message 4629)
Posted 19 days ago by Profile Keith Myers
Post:
Yes, if you compare your validated results of your wingmen running native Windows, the speedup using a Linux kernel and recent glibc library of 2.31 or better really does run that much faster.
5) Message boards : News : No tasks (Message 4620)
Posted 25 days ago by Profile Keith Myers
Post:
1. No.

2. Download the BOINC software to your computer. Join projects that interest you in mathematics, science and medicine. Process work for your projects. Gain the satisfaction that you furthered scientific research. Maybe get your name in attribution in scientific papers published by projects.
https://boinc.berkeley.edu/download_all.php
https://boinc.berkeley.edu/wiki/User_manual

3. Not that I am aware of. Not directly.
6) Message boards : News : No tasks (Message 4618)
Posted 26 days ago by Profile Keith Myers
Post:

1. Are there any perks of working here ?

They were supposed to give away a free black hole when you reached 100,000,000 credits, but I haven't seen mine yet.

Neither have I . . . :-(
7) Message boards : News : No tasks (Message 4616)
Posted 26 days ago by Profile Keith Myers
Post:
1. Put your idle, unused computer cycles to good use for distributed computing projects. Become a citizen-scientist.

2. https://universeathome.pl/universe/description.php

3. No.
8) Message boards : Number crunching : Double your task throughput on Linux (Message 4614)
Posted 28 days ago by Profile Keith Myers
Post:
Thanks Tom, every little bit helps with the team.
9) Message boards : Number crunching : Upload of WUs failed (Message 4605)
Posted 5 Jan 2021 by Profile Keith Myers
Post:
Uploads will still be congested for a while with all the host upload congestion and everyone trying to get through.

Remember the project server is a single machine. I have only a few results in backoffs on all hosts now instead of pages like last night.
10) Message boards : Number crunching : Upload of WUs failed (Message 4602)
Posted 5 Jan 2021 by Profile Keith Myers
Post:
If is not one thing . . . . . it's another.

Now all uploads are blocked because of an expired SSL security certificate today.

Please remedy ASAP.
11) Message boards : Number crunching : Strange behavior running (2) projects (Message 4598)
Posted 3 Jan 2021 by Profile Keith Myers
Post:
Regulate the pump and the fan speeds in the BIOS.

Problem solved.
12) Message boards : Number crunching : Upload of WUs failed (Message 4596)
Posted 2 Jan 2021 by Profile Keith Myers
Post:
Thanks for the acknowledgement, Krzysztof.

Know that we have seen the issue before and it resolves itself usually in a day. Just to repeat itself in another day it seems.

A new series with harder to run initial parameter sets usually slows things down for a while.
13) Message boards : Number crunching : Upload of WUs failed (Message 4594)
Posted 1 Jan 2021 by Profile Keith Myers
Post:
Today has been a real slog trying to get all the finished work uploaded. Just too many hosts trying to return fast running tasks I assume.
Can't download any of the new 350 series tasks either, just progressive backoff times.
14) Questions and Answers : Preferences : boincstats (Message 4590)
Posted 18 Dec 2020 by Profile Keith Myers
Post:
You haven't set to allow export of stats to third party sites in your Project preferences.
https://universeathome.pl/universe/prefs.php?subset=project
15) Message boards : Number crunching : MacOS compilation error (Message 4589)
Posted 16 Dec 2020 by Profile Keith Myers
Post:
Do I have to use Xcode to make app?

You can build the app outside of Xcode but as far as I know you have to compile using Xcode.


About all I can offer. I am not a developer.
16) Message boards : Number crunching : MacOS compilation error (Message 4587)
Posted 15 Dec 2020 by Profile Keith Myers
Post:
The IOkit directory is not where it should be?
https://github.com/euantorano/serial.nim/issues/13

https://garynil.tw/2017/01/298/tutorial-import-iokit-framework-into-xcode-project/
17) Message boards : Number crunching : MacOS compilation error (Message 4585)
Posted 14 Dec 2020 by Profile Keith Myers
Post:
Google search showed a lot of similar posts that Xojo newest release is needed to compile anything.

Maybe a MacOS user will jump in here to figure it out for you.
18) Message boards : Number crunching : Double your task throughput on Linux (Message 4580)
Posted 5 Dec 2020 by Profile Keith Myers
Post:
Thanks for the mini-lesson in VM's. Total VM noob here. I've never needed to run any project that required BOINC's Virtual-Box image.
Bare metal is good enough for me.
19) Message boards : Number crunching : Double your task throughput on Linux (Message 4577)
Posted 4 Dec 2020 by Profile Keith Myers
Post:
So I think you are saying the Windows native Hyper-V hypervisor is a closer to bare metal solution compared to BOINC's Virtual-Box hypervisor?
20) Message boards : Number crunching : Double your task throughput on Linux (Message 4575)
Posted 3 Dec 2020 by Profile Keith Myers
Post:
I ran a few task using the VM and Ubuntu. Times aren't as low as yours Keith but they went from 8000 - 9000 sec with Win 10 down to a more consistent 5300 sec with VM /Ubuntu.
An interesting exercise.

Yeah, I saw that. About 45 minutes faster. I don't know whether there are parameters you can set in the VM that would speed things up or not.

Also different hypervisors might have lower overhead and can run tasks closer to bare metal.


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