1) Message boards : Number crunching : Upload of WUs failed (Message 4697)
Posted 25 days ago by Profile Keith Myers
Post:
BOINC always sorts out the backed off and stalled uploads eventually. You just have to accept that the project running on a single server gets congested and slow rather often. Just be patient.
2) Message boards : Number crunching : Double or Triple your task throughput on Windows! (Message 4693)
Posted 29 days ago by Profile Keith Myers
Post:
Never tried a VM. But do run BT on Ubuntu20 through WINE.
Why can't you just run BT natively in Windows?
You can also ask for support at the BT forums from Fred.
https://forum.efmer.com/
There is also a new Javascript version of BT to try out if interested.
3) Message boards : Number crunching : New host gets only 1 WU per Thread - is there a "newbie"-phase? (Message 4685)
Posted 12 Apr 2021 by Profile Keith Myers
Post:
My old 16 Thread-PC gets 384 WU. Fine. It is crunching for for the project since years..

My new 32 Thread PC was added yesterday new to the project. He got 32 WUs.
Now after 118 valid WUs and many 100 more in validation I still get only about 32 WUs. I have set 4+4 days and its running 24h/7d.

Is there any newbie-phase until the PC is trusted by the project?
If so, how long is it?

Best Regards
Magiceye

I don't remember so when I started adding more hosts. There appears to be a 1536 task limit though no matter how many cores you have in a host.

I have found that the project limits me to around 725 tasks on my 32 core host. 1000 tasks on my 48 core host.

They may have changed that lately. Also your new host might still be "untrusted" till more results are verified.
4) Message boards : Number crunching : Double or Triple your task throughput on Windows! (Message 4668)
Posted 23 Mar 2021 by Profile Keith Myers
Post:
I'm not sure if they have cpu only tasks)

Sure they do. For both Gamma Ray and Gravity Wave. Check the Applications page.
https://einsteinathome.org/apps.php
5) Message boards : Number crunching : Trying to delete an old computer (Message 4664)
Posted 23 Mar 2021 by Profile Keith Myers
Post:
Yes, the merge function doesn't work a lot of times for little issues with identification. Frustrating.

You can sometimes play games with the hostid in the client_state.xml and edit the old hostid into the current host.

But you have to remember to increment the rpc_seqno by one of the old host or the server will just send you another new hostid frustrating you further.

I did that when I converted all my hosts from Windows to Linux and wanted to preserve the credit and creation date history of all my original hosts.

Merge won't let you merge incompatible OS' for example.
6) Message boards : Number crunching : Trying to delete an old computer (Message 4662)
Posted 22 Mar 2021 by Profile Keith Myers
Post:
You can only delete a host when it has no tasks still assigned to it in the database. If you had a single task still in one of the task categories, it would be impossible to delete.

Only think you can do is merge the old computer into the new host.

If a project has had corruption or data loss in the database where tasks have been orphaned in the database, it will be forever impossible to delete a host.
That is the situation I fall into for an old host at Milkyway for example. I will never be able to delete the host.

A host will fall off the active computers list once it hasn't contacted the project for over 30 days so then it becomes forgettable and not listed.
7) Message boards : Number crunching : How long will it take to complete the Universe@home project? (Message 4656)
Posted 13 Mar 2021 by Profile Keith Myers
Post:
Welcome to the project.

I don't think the admins have ever stated how much data they have to crunch through or when they think the project might be completed.

Also, don't know where their data sources are procured either. Has to be via satellites as the x-ray sources they study don't penetrate the atmosphere.

Guessing XMM Newton and Chandra telescopes. See GAIA mentioned in their papers.
8) Message boards : Number crunching : Double or Triple your task throughput on Windows! (Message 4653)
Posted 8 Mar 2021 by Profile Keith Myers
Post:
I was always leery of dual-booting too. Seems both Windows and Linux don't know how to NOT step on each others boot sectors and ruin everything.
That is why my standard method to install Linux is to add another hard drive or SSD and use that for the sole installation of Linux.
That way both Windows and Linux have their own drives and you simply choose which one to boot from the BIOS Boot Override menus during POST.
9) Message boards : News : No tasks (Message 4649)
Posted 26 Feb 2021 by Profile Keith Myers
Post:
Work generators running again.
Thanks, Krzysztof
10) Message boards : Number crunching : Double your task throughput on Linux (Message 4645)
Posted 25 Feb 2021 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.
11) Message boards : Number crunching : Upload of WUs failed (Message 4643)
Posted 25 Feb 2021 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.
12) Message boards : Number crunching : Double your task throughput on Linux (Message 4642)
Posted 25 Feb 2021 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.
13) Message boards : Number crunching : Double your task throughput on Linux (Message 4629)
Posted 7 Feb 2021 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.
14) Message boards : News : No tasks (Message 4620)
Posted 31 Jan 2021 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.
15) Message boards : News : No tasks (Message 4618)
Posted 31 Jan 2021 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 . . . :-(
16) Message boards : News : No tasks (Message 4616)
Posted 30 Jan 2021 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.
17) Message boards : Number crunching : Double your task throughput on Linux (Message 4614)
Posted 29 Jan 2021 by Profile Keith Myers
Post:
Thanks Tom, every little bit helps with the team.
18) 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.
19) 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.
20) 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.


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