Posts by Andi-Hagen
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1) Message boards : Windows : Confirmation errors (Message 21316)
Posted 851 days ago by Andi-Hagen
I found the hint about VS2012 C++ runtime update. I have installed SP4 and now the Sieve apps are running.
2) Message boards : Windows : Confirmation errors (Message 21315)
Posted 851 days ago by Andi-Hagen
Sorry, wrong task IDs. I got cofirmations errors for 23155257 and 23070558.
3) Message boards : Windows : Confirmation errors (Message 21314)
Posted 851 days ago by Andi-Hagen
I forgot to mention that I still get confirmation errors.
Task-IDs: 23434598, 23434596.
4) Message boards : Windows : Confirmation errors (Message 21313)
Posted 851 days ago by Andi-Hagen
Since I have changed from 6.04 to 6.06 (CUDA55) I get errors for my computed tasks. The status in my task list is "Bestätigungsfehler" (confirmation error).
Task ids for example: 23016670, 23003597, 22975627.
I am using a NVIDIA GeForce GTX 660 (2048 MB) with Windows 7 SP1.

My cuda55.config is:
verbose=1
threads=8
items_per_kernel=18
kernels_per_reduction=8
sleep=1
lut_size=19

What is going wrong?

And it has become slower. Solo Collatz with 6.04 took about 60 minutes, now it takes 80 minutes.


lut_size = 19 gives 8*2^19=4194304, that's 4MB, the card has only a cache of 384KB

For better values in the .config:
http://boinc.thesonntags.com/collatz/forum_thread.php?id=1009&postid=16503#16503

GeForce GTX 660, Keppler:
960 CUDA cores
384 KB Cache
2048 MB RAM

Try this
verbose=1
items_per_kernel=20
kernels_per_reduction=9
threads=9
sleep=1
lut_size=15


Or try the sieve (beta) apps, they run now very well without validation errors.


I tried with your config parameters. The GPU-Load raises to 99%, it is impossible to work with the computer in parallel and the runtime raises up to 100 minutes for a Solo Collatz.
I tried the sieve apps. All jobs fail with computation error (task-ids: 23434614, 23434613, 23434610)
Can I go back to 6.04? I was quite happy with that version.
5) Message boards : Windows : Confirmation errors (Message 21306)
Posted 852 days ago by Andi-Hagen
Since I have changed from 6.04 to 6.06 (CUDA55) I get errors for my computed tasks. The status in my task list is "Bestätigungsfehler" (confirmation error).
Task ids for example: 23016670, 23003597, 22975627.
I am using a NVIDIA GeForce GTX 660 (2048 MB) with Windows 7 SP1.

My cuda55.config is:
verbose=1
threads=8
items_per_kernel=18
kernels_per_reduction=8
sleep=1
lut_size=19

What is going wrong?

And it has become slower. Solo Collatz with 6.04 took about 60 minutes, now it takes 80 minutes.
6) Message boards : Windows : Failed to add project? (Message 21062)
Posted 885 days ago by Andi-Hagen
Same problem for me. I tried to set up the project for new. I deleted the project and now I can not add it. I get the following messages:

17.08.2015 22:49:17 | | Fetching configuration file from http://boinc.thesonntags.com/collatz/get_project_config.php
17.08.2015 22:51:24 | | Project communication failed: attempting access to reference site
17.08.2015 22:51:25 | | Internet access OK - project servers may be temporarily down.
7) Message boards : News : New Windows CUDA and OpenCL Versions Released (Message 20923)
Posted 904 days ago by Andi-Hagen
The config file is unchanged:
verbose=1
threads=8
items_per_kernel=17
kernels_per_reduction=8
sleep=1

How can I open my computer? The computer ID is 157389.


I have added to the config file:
lut_size=20

The performance is much better now but still a bit worse than with 6.04.
8) Message boards : News : New Windows CUDA and OpenCL Versions Released (Message 20911)
Posted 905 days ago by Andi-Hagen
Since I have changed from 6.04 to 6.06 (CUDA55) yesterday I get a lot of errors for my computed tasks. The status in my task list is "Bestätigungsfehler".
Task ids for example: 20034536, 20027762, 20024562, 20023802.
What is going wrong?
9) Message boards : News : New Windows CUDA and OpenCL Versions Released (Message 20908)
Posted 906 days ago by Andi-Hagen
The config file is unchanged:
verbose=1
threads=8
items_per_kernel=17
kernels_per_reduction=8
sleep=1

How can I open my computer? The computer ID is 157389.
10) Message boards : News : New Windows CUDA and OpenCL Versions Released (Message 20898)
Posted 906 days ago by Andi-Hagen
I have a problem with performance now. I have been offline for 4 weeks and when I started today I got the new 6.06 version (CUDA55). My runtimes are 2x longer comparing ver 6.04 vs 6.06.

Solo Collatz Conjecture v6.04 (cuda55) runtime 3,679.23 sec gpu 88.63
Solo Collatz Conjecture v6.06 (cuda55) runtime 7,739.31 sec gpu 145.17

Any hints for the reason?




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