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Posts by Haris Dublas

41) Message boards : Number crunching : Boinc 6.10.56 - backup project (Message 40162)
Posted 3 Jun 2010 by Haris Dublas
Post:
And on a completely unrelated note, I've gotten the nbody simulation code from another one of our astronomers here. And in a month or so we should have a single-precision GPU friendly application that will simulate the interactions between the milky way and other dwarf galaxies, which will be REALLY cool.

ssh tho. it's all secret.

...

but not really :)


We can finally crunch milkyway using our low end gpus (when that time comes). :)
42) Message boards : Number crunching : Undecided: $200 HD5830 or $290 HD5850? (Message 40046)
Posted 29 May 2010 by Haris Dublas
Post:
Somewhere between the 5850 and 4890.

5850 = 1440 sp = 725 core = 151w tdp
5830 = 1120 sp = 800 core = 175w tdp
4890 = 800 sp = 850 core = 190w tdp

Maybe
5830 rac = 5850 rac - 4770 rac or 4890 rac + 4770 rac.
43) Message boards : Number crunching : Computer with rac of 173 and 3000+ tasks in progress ?? (Message 39933)
Posted 25 May 2010 by Haris Dublas
Post:
He almost reached 4000 tasks yesterday. Seems some tasks timed out.

I've been complaining about that guy for days. He's a wingman to a couple of my tasks thats been in pending for almost 2 weeks now.
44) Message boards : Number crunching : OPT APP question. (Message 39869)
Posted 21 May 2010 by Haris Dublas
Post:
You can combine the contents of the app_info of both cpu and gpu like what I did before in collatz.

Open the gpu app_info (or cpu app_info) and delete the last line </app_info>. Now open cpu app_info (or gpu app_info), delete the 1st line <app_info>, then copy the contents to the other one (the one where you deleted the last line).

As a sample, heres my collatz app_info:

<app_info>

<app>
<name>collatz</name>
</app>
<file_info>
<name>collatz_2.09_windows_x86_64__ati13ati.exe</name>
<executable/>
</file_info>
<file_info>
<name>brook64_v3_cal13ati.dll</name>
<executable/>
</file_info>
<app_version>
<app_name>collatz</app_name>
<version_num>209</version_num>
<platform>windows_x86_64</platform>
<avg_ncpus>0.050000</avg_ncpus>
<max_ncpus>1</max_ncpus>
<flops>139920000000.000000</flops>
<plan_class>ati13ati</plan_class>
<file_ref>
<file_name>collatz_2.09_windows_x86_64__ati13ati.exe</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>brook64_v3_cal13ati.dll</file_name>
<open_name>brook64.dll</open_name>
<copy_file/>
</file_ref>
<coproc>
<type>ATI</type>
<count>1.000000</count>
</coproc>
<cmdline></cmdline>
</app_version>

<app>
<name>collatz</name>
</app>
<file_info>
<name>collatz_2.00_windows_x86_64__sse.exe</name>
<executable/>
</file_info>
<app_version>
<app_name>collatz</app_name>
<version_num>200</version_num>
<platform>windows_x86_64</platform>
<avg_ncpus>1.000000</avg_ncpus>
<max_ncpus>1.000000</max_ncpus>
<flops>2683478561.033724</flops>
<plan_class>sse</plan_class>
<file_ref>
<file_name>collatz_2.00_windows_x86_64__sse.exe</file_name>
<main_program/>
</file_ref>
</app_version>

</app_info>

Note: This is a bit different from the opt app_info found on the collatz web site as it utilizes the file names of the standard apps. The info above was based on the ones generated in the client_state.xml file when I ran the standard apps for the purpose of modifying the cmdline and other settings if necessary.
45) Message boards : Number crunching : 2x 5970 CrossfireX Stuck wus (Message 39851)
Posted 20 May 2010 by Haris Dublas
Post:
Dummy plug...

DD,


For those who run boinc on multi-gpu setup. "Always use dummy plugs!"

Even if some reported they have no problem running without dummy plugs, whats the problem in using 1/2/3 for peace of mind. It only cost a buck or two to make one depending on the quality of the adapter. If your card already have vga connector you can bunch-up 3 resistors by glue or something and insert the resistor legs on the proper holes. But for safety and ease of use, a plug is better.

You only need:
1 DVI-VGA adapter
3 1/2w 68-100 ohms resistors

Note: 1/4w seems okay but they're too thin and 1w is too thick

Since cards nowadays include dvi-vga adapters in the package, you only need to buy the resistors.
46) Message boards : Number crunching : Aaargh! Server out of new work! (Message 39836)
Posted 19 May 2010 by Haris Dublas
Post:
That host is not mine, it belongs to Lord Nelloz. I only found out about it after I checked a task of mine that's been inconclusive for a week now.

By the way, that host have 2817 tasks now.
47) Message boards : Number crunching : Aaargh! Server out of new work! (Message 39820)
Posted 19 May 2010 by Haris Dublas
Post:
Somebody poke Travis, the tasks are now 2598. :)

That host is a wingman. At this rate, he might become a wingman on future tasks as well and we'll be stuck in pending limbo.
48) Message boards : Number crunching : Limit of 48 workunits at once (Message 39803)
Posted 18 May 2010 by Haris Dublas
Post:
How about this one? http://milkyway.cs.rpi.edu/milkyway/show_host_detail.php?hostid=171705

2381 tasks in progress and 1 pending. I'm sure all of that will time out. How did he accumulate so many work? Did he edit his cc_config and put in 50 on <ncpus>?
49) Message boards : Number crunching : Aaargh! Server out of new work! (Message 39801)
Posted 18 May 2010 by Haris Dublas
Post:
Cant be avoided. Lots of people will run out of work with hosts like this, http://milkyway.cs.rpi.edu/milkyway/show_host_detail.php?hostid=171705.

That host have over 2000 tasks in cache while my 3850 is limited to only 6 tasks in progress. *sigh*


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