Posts by candido
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1) Message boards : Number crunching : all downloads failing again (Message 4303)
Posted 30 Mar 2015 by candido
I noticed that all WU downloaded today failed...
2) Message boards : News : New workunits (Message 4220)
Posted 23 Mar 2015 by candido
Same problem, tens of downloads failing.
3) Message boards : News : Badges (Message 384)
Posted 20 Nov 2012 by candido
How do you put you GPU Grid publications on the statseb.fr signature.
Is is an uploaded image?
4) Message boards : News : Badges (Message 383)
Posted 20 Nov 2012 by candido
They look great!!
5) Message boards : Number crunching : Download and Processing Errors (Message 332)
Posted 24 Oct 2012 by candido
Problem solved!!
Thanks for the help.
ccandido
6) Message boards : Number crunching : Download and Processing Errors (Message 330)
Posted 24 Oct 2012 by candido
I'll do that right away.
Many thanks Kyong
7) Message boards : Number crunching : Download and Processing Errors (Message 328)
Posted 24 Oct 2012 by candido
Thanks for the quick reply from all of you
I guess I will try to install the 32 bit libs (ia32-libs)
I have no idea how to do that, at the moment, but I will search the net.
I have also downloaded jujube virtual machine and might also try that.
Thanks for your help
ccandido
8) Message boards : Number crunching : Download and Processing Errors (Message 324)
Posted 24 Oct 2012 by candido
Hi, I am having this problem.
About 2/3 of all downloaded wu fail in the first second after starting.
This is not too big a problem as almost no time of computing is waisted, however, it does increase some data traffic, which is not a problem for me, but might be for the server if other people are having the same problem.

I have an i7 2630, win 7, 64 bit, as a host, runing debian 64 (Linux 2.6.32-5-amd64) on an oracle VBox. boinc manager is v. 6.10.58. (MAchine nr 2950)

error are:
Dom 21 Out 2012 00:13:48 WEST Asteroids@home Starting ps_120928_86_31_2
Dom 21 Out 2012 00:13:48 WEST Asteroids@home Starting task ps_120928_86_31_2 using period_search version 10100
Dom 21 Out 2012 00:13:48 WEST Asteroids@home Starting ps_120928_83_221_2
Dom 21 Out 2012 00:13:48 WEST Asteroids@home Starting task ps_120928_83_221_2 using period_search version 10100
Dom 21 Out 2012 00:13:49 WEST Asteroids@home Computation for task ps_120928_86_31_2 finished
Dom 21 Out 2012 00:13:49 WEST Asteroids@home Output file ps_120928_86_31_2_0 for task ps_120928_86_31_2 absent
Dom 21 Out 2012 00:13:49 WEST Asteroids@home Resuming task ps_120928_89_287_2 using period_search version 10100
Dom 21 Out 2012 00:13:50 WEST Asteroids@home Computation for task ps_120928_83_221_2 finished
Dom 21 Out 2012 00:13:50 WEST Asteroids@home Output file ps_120928_83_221_2_0 for task ps_120928_83_221_2 absent
Dom 21 Out 2012 00:13:50 WEST Asteroids@home Resuming task ps_120928_83_214_2 using period_search version 10100
Dom 21 Out 2012 00:14:03 WEST Asteroids@home task ps_120928_87_47_2 resumed by user
Dom 21 Out 2012 00:14:03 WEST Asteroids@home Starting ps_120928_87_47_2
Dom 21 Out 2012 00:14:03 WEST Asteroids@home Starting task ps_120928_87_47_2 using period_search version 10100
Dom 21 Out 2012 00:14:04 WEST Asteroids@home Computation for task ps_120928_87_47_2 finished
Dom 21 Out 2012 00:14:04 WEST Asteroids@home Output file ps_120928_87_47_2_0 for task ps_120928_87_47_2 absent

Is there anything I can do to solve this?
thanks
9) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 271)
Posted 19 Sep 2012 by candido

Ccandido, do I understand correctly that 64 bit Debian did not give good benchmarks for you?


Hi jujube, no it did not. the Debian 64 was better than the ubuntu 32 but both these guest OS had worst benchmarks than the host. Much worst!


Debian repositories seem to make only BOINC 6.10.58 available which might be adequate for Asteroids. If a 7.x version is required then someone in the community will compile a 7.x and make it available or else I will publish instructions for compiling your own. It's easy.


At the moment, I am only running asteroids so 6.10.58 is OK, at least for me.
But if you want to post the instructions, someone (more apt than I am) might put them to good use.
ccandido
10) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 268)
Posted 18 Sep 2012 by candido
hi jujube. Can you quantify the difference?
Although you found a small diference, which one was the better?
11) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 267)
Posted 18 Sep 2012 by candido
Hi. The 64 bit Debian 6.0.5 is now running on a i7 2630 QM (laptop) and it has low benchmarks either.
I have exported the other 32 bits Ubuntu VM from my other laptop to this i7 2630 QM.
Took me 20 minutes give or take to export the VM from one laptop to the other!!!!
This means I now have two VM in my i7 laptop.
I ran, at the same time, 4 WU in the 64bit Debian VM and 1 WU in the 32bit Ubuntu VM.
WU in the Debian completed in an average of 36532 secs (10.1 hours) approx, the WU in the Ubuntu took secs 37855 (10.5 hours, +3.6%) (CPU time, not Run time).
I only compared 4 WU in one OS with 1 WU in the other OS, this is not a fair comparison.
But I am keeping the Debian and stoping the ubuntu, although the Boinc Manager is the ubuntu looks beter and the BM in the Debian is the old 6.10.58.

Benchmarks for the debian with activity suspended on the host:

Benchmark results:
Number of CPUs: 4
1273 floating point MIPS (Whetstone) per CPU
11392 integer MIPS (Dhrystone) per CPU

the FLOPS are lower than the Host (1888 FP MIPS)
the integer ops are much higher than the host (5912 I MIPS) !!!!????
12) Message boards : Unix/Linux : Error while computing - Linux & Boinc 7.0.24 (Message 264)
Posted 17 Sep 2012 by candido
Many thanks
I am going to do this now.
ccandido
13) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 262)
Posted 17 Sep 2012 by candido
I see. Thanks MarkJ
May I ask why you use a 32 bit linux version on this 64 bit computer, especially if this makes you loose some cpu capacity?
I am instaling debian 6.0.5 on another machine and in this case i choose a 64 bit debian. I only use this for runing boinc / asteriods . Is this the best choice?
ccandido
14) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 261)
Posted 17 Sep 2012 by candido
Hi MarkJ. Thanks for your reply.
I am not an expert, but I think you are asking whether I enabled the virtualization hardware in the BIOS. I checked and my BIOS has nothing related to virtualization. So the option im mention in acceleration is not available in this computer) and I had to install ubuntu 32 bits in a 64 bit windows 7 Host.
Would this then explain the loss in the CPU Flops and IOps?
Thanks
ccandido

EDIT: sorry I posted before seeing your 2nd post.
15) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 258)
Posted 17 Sep 2012 by candido
Stop boinc and anything else that is processor intensive in windows before running benchmarks in the VM if you want accurate benchmark results.


That doesn't help, I still get poor benchmarks in the VM. Normal benchmarks for my i7 2600K at stock clock (3.40 GHz) are 3,770 and 22,028. In the Ubuntu VM benchmarks are 3,227 and 13,884. Wow, a huge hit on the IOPs.

I installed 32 bit Ubuntu in the VM along with XFCE desktop because that combination seemed to make the system more stable and responsive. Does 32 bit BOINC benchmark lower than 64 bit BOINC?

I'm burning a 32 bit Fedora 17 Live DVD as I post this. I'll report the benchmarks as soon as I get them. I might have to try a 64 bit Fedora 17 VM for comparison.



Hi, im may case stoping intensive apps. in the host did improve Flops from 1450 to 1800 aprox and IOps from 4900 to 5500 aprox, but these numbbers are still far from 'normal' (2100 and 6300 approx).

I guess the loss is the consequence of having Virtul Box, task manager (occasionaly) and System processes consuming CPU. These processes would not be runnig at the same time (or would not consume so much CPU) so the FLOPs would be higgher without the VM.
16) Message boards : Unix/Linux : Error while computing - Linux & Boinc 7.0.24 (Message 257)
Posted 17 Sep 2012 by candido
Hi, MarkJ will these commands work in Debian 6.0.5 64 bits installed on a Virtual Box VM?
Thanks
17) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 249)
Posted 16 Sep 2012 by candido
Thanks Kyong.
In case I decide to install a virtual machine on other computers I will try to use Debian and a more stable version of Boinc Manager and then check the number of Flops again. In case they don't show a big diference I will replace ubuntu with Debian. Meanwhile i am almost completing my 2nd asteroids WU and so far so good, And, since you mentioned that the 6,5 hours processing time for a WU seems OK, I will leave this machine untouched for a while and see how it goes.
ccandido
18) Message boards : Windows : FLOPs on a guest virtual machine differ from those of a host machine?? (Message 245)
Posted 16 Sep 2012 by candido
Hi,after pondering i decided to give it a try and installed Oracle VirtualBOX, then Ubuntu 12.04 on a virtual machine, and then linux BoincManager on this virtual machine.
I followed the instructions here (http://asteroidsathome.net/boinc/forum_thread.php?id=27&nowrap=true#166) for preparing the VBOX CD-ROM.
Then followed the wizzard recomendations of the oracle VBox instalation program. (Did not change any of the recommended / default instaltion values for the creation of a virtual machine , including type of virtual hard drive, size, size of virtual RAM, etc.)
After that I followed these instructions (http://asteroidsathome.net/boinc/forum_thread.php?id=18&nowrap=true#212) to install boincmanager on my linux virtual machine. I got version 7.0.36.

My computer is a 64bit laptop with approx 3 or 4 years, Pentium(R) Dual-Core CPU T4300 @ 2.10GHz [Family 6 Model 23 Stepping 10]. The Host OS is Win 7, 64 bit.
It has been showing consistently on other project I am participating:

Measured floating point speed: 2131.79 million ops/sec
Measured integer speed: 6294.65 million ops/sec

But the virtual machine I installed (Linux 3.2.0-29-generic, BOINC 7.0.36, RAM 495.97 MB, Cache 6144 KB, Swap space 510 MB, Total disk space 7.47 GB, Free 4.64 GB) shows only:

Measured floating point speed: 1452.09 millão ops/seg (-32%)
Measured integer speed: 4872.34 millão ops/seg (-23%)

This is very big drop in the computing capacity. Is this real? Has there been a reall drop in computing capacity in the virtual machine?

Additional info:
1. If i run CPU benchmarks, numbers vary a bit but not significantly.

2. I still have boinc manager running on the host OS (windows 7) but am using only 50% of the processors (meaning 1 of the existing 2).

3. before installing the virtual machine I isntalled ubuntu side-by-side with windows twice, and twice had problems. Boinc did not run appropriatly, etc.
But on these two ocasions, the same laptop showed these numbers:

1st instalation
Linux 2.6.32-41-generic-pae
BOINC 6.10.17
RAM 3859.25 MB
Cache 1024 KB
FLOP : 1354.12 millão ops/seg
Measured integer speed: 4807.79 millão ops/seg

2nd install
Linux 3.2.0-27-generic
BOINC 7.0.27
RAM 3794.28 MB
Cache 1024 KB
FLOP: 2093.4 millão ops/seg
Measured integer speed: 10950.69 millão ops/seg (this time it went up!?)

My question is, by using a virtual machine am I losing crunching power?
Would it be bigger if I used both processors on my host OS (on other projects) and none in the virtual machine (on asteroids)?
thanks

ccandido

Edit: I just got my first 120 credits on this projec, the WU ran for about 6,5 hours:
48302 18913 16 Sep 2012 | 2:51:35 UTC 16 Sep 2012 | 9:51:34 UTC Completo e validado 23,704.59 21,126.57 120.00 Period Search Application v101.00
19) Message boards : Number crunching : Not getting any of the available 500 WU (Message 117)
Posted 28 Jul 2012 by candido
My computers are toshiba laptops and it doesn't seem a good idea to replace the manufacturer OS. My work computer would be a good candidate for installing linux, but I cannot change the software.
I tried to install linux on an old laptot sometime ago but it crashed every time I tried to start the system right after installation...
Guess I could try to install linux inside a virtual box, but suspect it might make the computer much slower...
For the time being I guess i will wait
Thans for the help
20) Message boards : Number crunching : Not getting any of the available 500 WU (Message 114)
Posted 28 Jul 2012 by candido
Hi cykodennis.
Many thanks for your reply.
Although I didn't give you much info, you did give me the answer.
I am runnig windows only on my machines
and will have to waint until the project starts sending windows wu.


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