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Message 1582 - Posted: 20 Sep 2009, 21:29:41 UTC
Last modified: 7 Jan 2010, 19:49:19 UTC

The ATI web site has the list of supported graphics cards on their ATI Stream SDK v1.4 System Requirements page. Anything listed can run Collatz ATI app.

The following is taken from the README.txt file Gipsel created for the Milkyway@home ATI app. It also applies to Collatz as it also uses the CAL/Brook v1.2 SDK.


Note on Windows 7:

Some Catalyst drivers do not install the CAL libraries on Windows 7. One has to extract them from
the driver package (usually using the expand command) and put them in the Windows\system32 folder.
The needed files are (the suffix "64" applies only to 64Bit systems):

amdcalrt.dll or amdcalrt64.dll
amdcalcl.dll or amdcalcl64.dll
amdcaldd.dll or amdcaldd64.dll

=========================================================================================

Note on Catalyst 9.2 and up:

ATI/AMD renamed the CAL libraries with the latest driver release. To get the GPU app running,
duplicate the following files in your Windows\system32 folder (the suffix "64" applies only to
64Bit systems):

aticalrt.dll or aticalrt64.dll
aticalcl.dll or aticalcl64.dll
aticaldd.dll or aticaldd64.dll

Now Rename the copies to

amdcalrt.dll or amdcalrt64.dll
amdcalcl.dll or amdcalcl64.dll
amdcaldd.dll or amdcaldd64.dll

You should have now 6 dll files in your Windows\system32 folder, 3 named amdcal*.dll and 3 with
the name atical*.dll. A simple rename of atical*.dll to amdcal*.dll is not sufficient!

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Message 5300 - Posted: 5 Jan 2010, 13:40:54 UTC

Slicker, the link is broken! Please update it.

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Message 5364 - Posted: 7 Jan 2010, 19:50:22 UTC - in response to Message 5300.

Slicker, the link is broken! Please update it.


Thanks. They released CAL 2.0 and moved the CAL 1.4 system requirements page. It should be fixed now, or at least until they move it again.

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Message 10106 - Posted: 30 Oct 2010, 21:10:33 UTC - in response to Message 5364.

You might want to inform both Cuda and ATI Stream /APP users to install both the actual video card driver + the actual cuda / ati stream sdk / APP software to get best results or GPGPU + CPU running at the same time.

I know ATI/AMD has the 10.10 driver 78mb and 10.10 APP 97mb programs both working for this project + Boinc and GPGPU jobs so have to install both software.

Example Win7x64:
* Catalyst Software Suite (64 bit) English Only 75.9 MB 10.10 10/22/2010
Description:
Package Includes:
Display Driver
ATI Integrated Driver
Catalyst Control Center
(English Language Only)
For the 64 bit version of Windows Vista and Windows 7

* AMD Catalystâ„¢ Accelerated Parallel Processing (APP) Technology Edition 92.1 MB

Nvidia might have both cuda + driver in 1 download as part of driver.

Boinc:
It would be nice to have default GPGPU processing / heavier workloads and cpu as backup as it is much weaker.

Example:
Intel Laptop t2600 dual core, 20 hours per core.
Intel Q9550 quad core, 10 hours per core.
ATI 4830, 23 min. to do same job with ATI stream /APP installed.

I know this might be stupid but could help a lot of Boinc users get most from their pc's / laptop's + help the projects get faster results.

Robert Maclennan (TSBT)
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Message 12864 - Posted: 30 Oct 2011, 12:40:32 UTC

Why does it take ages to get your credit is what i want to know?

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Message 12866 - Posted: 31 Oct 2011, 4:47:37 UTC - in response to Message 12864.

Why does it take ages to get your credit is what i want to know?


To keep the server's resources to a minimum, very little data is returned. Because overclocked GPUs can return results which the host thinks are valid but are not, a quorum is used to make sure the results match. So, until a wingman returns a matching result, credit is not granted. When the wingman aborts the WU beyond the deadline, suspends the project until the WU is past the deadline, or returns a WU that is completed but invalid, the WU needs to be resent and the clock starts over again at 7 days. If it happens several times, it can take several weeks to get credit. On the other hand, fast GPUs can finish WUs in a matter of minutes, so if your wingman completes the WU on a fast GPU, credit is awarded very quickly.

The deadline could be reduced but that would eliminate slow CPUs if the person crunches any other projects as the deadline could be missed and personally, I hate it when a project has such short deadlines that BOINC decides to run it at high priority almost all the time.

Another option would be to come up with a way within the apps to return a little more data so that a quorum would not be required. I'll look into doing that in the next version of the app. I just have to come up with a way to do it that doesn't impact the apps performance.

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Message 12868 - Posted: 31 Oct 2011, 13:23:06 UTC - in response to Message 12864.

Why does it take ages to get your credit is what i want to know?


Here is an example of what Slicker is talking about:
http://boinc.thesonntags.com/collatz/workunit.php?wuid=42330206

Hopefully it is still there when you read this, it is a dynamic thing but I hope so. It shows your pc and another getting the same unit on the 29th of October, you returned it on the 29th but your wingman, the other pc, has not returned it yet so you are still waiting for credit for that workunit. He has until the 5th of November to return it, if he doesn't then it well be automatically resent to another pc, meaning you are still waiting for credit for the unit.

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Message 13246 - Posted: 7 Jan 2012, 1:42:03 UTC

Anybody have any clues as to why I get computation errors in quadfire with dual 4870 X2's?

Only happens with Collats Conjecture,

PrimeGrid, MooWrap and Milk Way GPU WU's crunch without any errors.

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Message 13257 - Posted: 7 Jan 2012, 18:22:07 UTC - in response to Message 13246.

You had at least one WU complete without errors. What happened since then? Did you upgrade your Catalyst drivers?


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