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drummers-lowrise
1) Message boards : Problems and Help : ati 7970 memory speed (Message 81057)
Posted 2491 days ago by Thamir Ghaslan
Hello,

I'm trying to adjust the memory speed on my 7970 board towards 300mhz to avoid overheating and system hang ups for the ATI and openCL tasks on offer. So far no luck. CCC was used.

Any advice?
2) Message boards : Sieving : ppsieve ATI/OpenCL testing (Message 28416)
Posted 3958 days ago by Thamir Ghaslan
Could be a heating or power supply problem.


Definitely power supply. 850 watts is barely enough.

Heat on each GPU never exceed 80c and the fans are barely heard.

In any case, I've stabilized the system now for a few hours. Down clocked the 4870x2 gpu and mem to 500 and kept the 5970 at 730 core 1010 mem.

30 mins for 5970. 1 hour for 4870s.
3) Message boards : Sieving : ppsieve ATI/OpenCL testing (Message 28412)
Posted 3958 days ago by Thamir Ghaslan
Here are some odd behaviors!

Placed the 4870x2 back with the 5970 after upgrading to 10.11

4 GPUS max at 80%, each cpu core max at 25 for the q6600.

Problem is, when any WU completes on any core on the 4870x2, the fan goes to max throttle and the system restarts. Windows will only recognize the 5970 after the reboot, so a hard shutdown is required for the 4870x2 to be recognized again.

I suspected power supply strain, so lowered the core frequencies of the 4870x2, but problem did not resolve at minimum frequency of 500mhz.

This does not happen with other projects.

Could be driver, application, or opencl related?
4) Message boards : Sieving : ppsieve ATI/OpenCL testing (Message 28407)
Posted 3959 days ago by Thamir Ghaslan
Got rid of the 4870x2 and kept the 5970 on the mobo.

Went to ATI and downloaded Accelerated Parallel Processing (APP) Technology Edition ver 10.11

Followed the thread topics, got app_info.xml modified.

WUs takes 20 - 30 minutes to complete.

GPUs 0 and 1 max out at 60% and CPU 0 and 1 at 20%.

5) Message boards : Sieving : ppsieve ATI/OpenCL testing (Message 28326)
Posted 3960 days ago by Thamir Ghaslan
great work ken, keep it up! :)

win 7 64 bit.
5970 and 4870x2 on one mobo.

sdk 2.2 and cat 10.5 installed.

always getting device not found errors.

i can't upgrade the driver to higher than 10.5, the system crashes.

i'm suspecting that if I removed the 5970 or 4870x2 it should'nt crash if I upgraded to a higher version.
6) Message boards : AP26 - AP27 Search : CUDA application released (Message 19815)
Posted 4304 days ago by Thamir Ghaslan
Few results validated on a geforce 8400. Average run time from 3 to 4 hours.
On CPU it averages 1 hour.

Boinc estimates the GPU at 5 GFLOPS, while the CPU has 2.4 Gflops and 5.4 MIPS.

7) Message boards : AP26 - AP27 Search : CUDA application released (Message 19759)
Posted 4306 days ago by Thamir Ghaslan
First thing, excelent jump to GPU!

Can we expect an ATI version anytime soon?

I've sucessfully downloaded and ran tasks on a dual core + geforce 8400 GS, video memory in properties shows at 256 MB. Total is 1 gig graphics memory, but I guess it swaps to CPU memory when needed!

First 30 seconds to a minute puts the system to a freezing crawl, so I've set the options to do work when the user is inactive.

Initial reported completion is 30 minutes, but accurate figures will be showing up in a day or two while it crunches and I'm away.
8) Message boards : Number crunching : LLR Cullen 0% progress after 2 hours! (Message 6948)
Posted 5129 days ago by Thamir Ghaslan

Is this normal?

CPU time 2 hours, progress 0%, expected completion 2 hours since downloading this WU:

http://www.primegrid.com/workunit.php?wuid=14746177

This is my quad core host:

http://www.primegrid.com/show_host_detail.php?hostid=42405
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