1) Forums : Technical Support : camb_boinc2docker tasks aborted/computation error (Message 23023)
Posted 29 days ago by Jim1348
Post:
You are using BOINC 7.18.1. That has problems on VirtualBox projects, and some others.
https://boinc.berkeley.edu/forum_thread.php?id=14650

You probably got it from ppa:costamagnagianfranco/boinc, but that doesn't matter.
Try removing it (and remove the ppa).

Then, install the version that comes with Mint, which will probably be 7.16.6, which is what I get with Ubuntu. It should work.
2) Forums : Technical Support : Title: camb_boinc2docker WUs run under 20 secs, fail with computation error (Message 23014)
Posted 16 Apr 2022 by Jim1348
Post:
2022-04-16 03:21:41 (6052): Error in start VM for VM: -2147467259
Command:
VBoxManage -q startvm "boinc_81d94838fc6a7371" --type headless
Output:
Waiting for VM "boinc_81d94838fc6a7371" to power on...
VBoxManage.exe: error: Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).
VBoxManage.exe: error: VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED)
http://www.cosmologyathome.org/result.php?resultid=58867215

You need to enable virtualization in the BIOS, or else maybe there is a problem with the VBox installation.
It would be better to use 5.2.44 anyway.
https://www.virtualbox.org/wiki/Download_Old_Builds_5_2
3) Forums : Technical Support : All Work Units fail on Computation error on Debian Linux (Message 22989)
Posted 21 Mar 2022 by Jim1348
Post:
I have an I9 MacBook Pro from 2019, 2.4 Gig of memory, with 8 Cores & an AMD Radeon Pro Vega with 4 Gig, plus the built-in Intel Video.

This problem has been going on for awhile, but before it started, I had no problems with the WU's.

I know nothing about Macs, but I wonder whether you have updated your OS beyond compatibility.
They have not updated their apps for quite some time.
http://www.cosmologyathome.org/apps.php
4) Forums : General Topics : Finished Work Units not able to Upload (Message 22966)
Posted 14 Mar 2022 by Jim1348
Post:
Yes, I see it too.

I hope they fix it soon, but they often don't check the server frequently, and the forums even less.
5) Forums : General Topics : Some useful BOINC things (Message 22955)
Posted 4 Mar 2022 by Jim1348
Post:
Thanks Jim!

If you have enough RAM, here is a way for anybody with multiple cores to cheat to get many more credits.

I don't even look at credits, and it is unfortunate that you have used anything I said for that.
6) Forums : General Topics : Some useful BOINC things (Message 22953)
Posted 3 Mar 2022 by Jim1348
Post:
Interesting. I got a 10% reduction when running all 4 of my logical cores. If running 2+2 cores (2 tasks each using 2 cores), I get an effective 20% reduction in time.

My CPU is an I5-3210M. Perhaps the "M" at the end has something to do with my crappier performance?

I ran only Ryzen 3000's (usually 3600) on Cosmology. They have a lot of cache, which helps. I don't know much about the mobile chips, but I expect that they worry a lot more about thermal management. I expect some power control program causes them to downclock when too many cores operate.
7) Forums : General Topics : Some useful BOINC things (Message 22951)
Posted 1 Mar 2022 by Jim1348
Post:
(2) on a hyper-threading CPU, you should use the number of PHYSICAL cores (not logical cores). This is how parallel computing on a CPU works. A test I did confirmed this: all tasks have the same work content, but the one using all my logical cores (4 cores) finished only VERY SLIGHTLY faster than the one using all my physical cores (2 cores).


(1) On all my machines, I see an expected reduction in run time by increasing the number of virtual cores. On this, as on most BOINC projects, the use of two virtual cores increases the output (decreases the run time) by about 30% to 40% as compared to a full core.

(2) BOINC reports virtual cores as "cores", since that is what they look like to the OS. I think the terminology is appropriate.
8) Forums : Technical Support : Too many work units. (Message 22944)
Posted 8 Feb 2022 by Jim1348
Post:
It is due to the max_concurrent tag in your app_config.xml file. Get rid of it.
https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=5726&postid=45384#45384
9) Forums : General Topics : Work Units not starting (Message 22934)
Posted 27 Jan 2022 by Jim1348
Post:
They don't have an app for Darwin.
http://www.cosmologyathome.org/apps.php
10) Forums : Technical Support : Cosmology@home tasks fail with Postponed: VM job unmanageable, restarting later if vboxsvc priority is set to idle (Message 22922)
Posted 5 Dec 2021 by Jim1348
Post:
That is a masterpiece of concision. I have taken the liberty of posting it on Rosetta.
They are in desperate (desperate) need of it for their python work units.

Thanks, it saves me various other work-arounds, mainly involving going back to VBox 5.2.44.
That is easy in Windows, but not so easy in Ubuntu.
11) Forums : Technical Support : Computation error with: VERR_ACCESS_DENIED and VBOX_E_IPRT_ERROR (Message 22891)
Posted 10 Nov 2021 by Jim1348
Post:
I have no idea how grcpool works, but it looks like VirtualBox is not installed, or not enabled in the BIOS.
12) Forums : Technical Support : Cosmology@home tasks fail with Postponed: VM job unmanageable, restarting later if vboxsvc priority is set to idle (Message 22880)
Posted 27 Oct 2021 by Jim1348
Post:
VirtualBox-6.1.28-147628-Win is out. I try and works well.

VBox 6.1.28 is working fine for me on Linux.
http://www.cosmologyathome.org/results.php?hostid=441743&offset=0&show_names=0&state=4&appid=

But I haven't had much luck with it or 5.2.44 (which used to work) on Win10.

I get frequent "VM job unmanageable" errors. They need to fix it at the project.
13) Forums : Technical Support : Not enough camb_boinc2docker WUs (Message 22873)
Posted 20 Oct 2021 by Jim1348
Post:
The Event Log says it is not requesting tasks as I have some tasks suspended via Manager. That is indeed correct, I always suspend all camb_legacy WUs. I don't want to waste my CPU time for applications they don't really need to only receive a few points.

So this is it. Question would be how to get rid of camb_legacy WUs. I am pool crunching, so just disabling those WUs in the account settings is not possible unfortunately.

As maeax says, whenever you suspend a work unit, BOINC won't download new ones. That is not a problem with the project, just standard BOINC behavior. I don't know of a way to do what you want if you are in a pool.

Try to convince the pool to drop the legacy ones; they really are not used for much, as stated previously by the project admin some time ago.
14) Forums : Technical Support : Cannot add Cosmology to a new Computer (Message 22867)
Posted 17 Oct 2021 by Jim1348
Post:
Try this.
https://boinc.berkeley.edu/forum_thread.php?id=14422&postid=105657#105657
15) Forums : Technical Support : Boinc wth Linux / Communication with VM Hypervisor failed (Message 22850)
Posted 3 Oct 2021 by Jim1348
Post:
The project will have to make it compatible with the latest VirtualBox version. My favorite fix was to go back to VirtualBox 5.2.42, but I don't think you can do that with either Ubuntu 20.04, or Windows 10 any longer. I don't know about other OS's.

You can try Universe. It is a nice project without VirtualBox.
https://universeathome.pl/universe/

If you like VBox projects, you can always do LHC/CMS though. It is working OK with VBox 6.1.26 on both Ubuntu 20.04.3 and Windows 10 for me.
16) Forums : Technical Support : WU startup failure: code NS_ERROR_FAILURE (0x80004005) (Message 22843)
Posted 20 Sep 2021 by Jim1348
Post:
I have seen some projects send out VirtualBox work to machines that don't have it installed at all.
17) Forums : Technical Support : WU startup failure: code NS_ERROR_FAILURE (0x80004005) (Message 22841)
Posted 20 Sep 2021 by Jim1348
Post:
They don't have a Darwin app for one thing.
https://www.cosmologyathome.org/apps.php
18) Forums : Technical Support : Can we get a usable upload server? (Message 22822)
Posted 10 Aug 2021 by Jim1348
Post:
I have never seen that. It is probably a local connection issue, or your ISP.
http://www.cosmologyathome.org/results.php?hostid=439401
19) Forums : General Topics : Docker tasks (Message 22820)
Posted 7 Aug 2021 by Jim1348
Post:
What are 'docker tasks'? I am rather new to the system here.

camb_boinc2docker.
https://www.cosmologyathome.org/server_status.php

You need VirtualBox to be installed.
And for Windows, Version 5.2.x works better than 6.1.x.
https://www.virtualbox.org/wiki/Download_Old_Builds_5_2

For Linux, the later version is OK from what I have seen. YMMV
20) Forums : General Topics : Docker tasks (Message 22819)
Posted 7 Aug 2021 by Jim1348
Post:
delete


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