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drummers-lowrise
1) Message boards : Aggie The Pew message board (Message 126346)
Posted 40 days ago by Profile mfl0pProject donor
found one today
2) Message boards : AP26 - AP27 Search : New feature with latest AP27 gpu application (Message 125749)
Posted 46 days ago by Profile mfl0pProject donor
Very interesting. Care to explain how it works?

Also, is this limited to certain GPU families (Turing, Pascal, etc) or will all NV cards benefit?


basically it trades screen refresh rate for more speed.

it will work on all GPUs
3) Message boards : AP26 - AP27 Search : New feature with latest AP27 gpu application (Message 125728)
Posted 46 days ago by Profile mfl0pProject donor
Along with the 400 driver fix, many speed improvements, and reduced host RAM usage I have added a new command line flag -compute

This will slightly increase the application speed for headless machines (no monitor). If you use this flag with a monitor attached expect increased display lag. I recommend only using it on a multi-gpu system that's a dedicated cruncher.

Use this new compute mode like LLR's multithreaded -t flag. Create an app_config.xml file in the directory C:\ProgramData\BOINC\projects\www.primegrid.com\ (or wherever your BOINC data directory is located). It should contain the following for Nvidia AP27:
<app_config> <app> <name>ap26</name> </app> <app_version> <app_name>ap26</app_name> <plan_class>OCL_cuda_AP27</plan_class> <cmdline>-compute</cmdline> </app_version> </app_config>
4) Message boards : Aggie The Pew message board (Message 124417)
Posted 70 days ago by Profile mfl0pProject donor
up late, but got a good start
5) Message boards : AP26 - AP27 Search : Geforce Drivers 4xx.xx Drop more than 2/3 in OpenCL Performance from the 3xx.xx Drivers. (Message 124408)
Posted 70 days ago by Profile mfl0pProject donor
Any update as to the Coding being updated to support the Newer Drivers for the GTX Graphics Cards?
Tested 417.58 Today and still double the run time from the 3xx.xx Drivers


Code changes are complete. Just waiting on the application builds.
6) Message boards : AP26 - AP27 Search : 400 series Nvidia drivers slow down AP search (Message 123569)
Posted 93 days ago by Profile mfl0pProject donor
I'm just wondering why they decided to change the CL_KERNEL_WORK_GROUP_SIZE returned value to 256 now, after years of it returning 1024.

We'll need to test some changes to the app to see if 1024 will still work.
7) Message boards : AP26 - AP27 Search : Geforce Drivers 4xx.xx Drop more than 2/3 in OpenCL Performance from the 3xx.xx Drivers. (Message 123454)
Posted 95 days ago by Profile mfl0pProject donor
Yes, thanks Nvidia for finding out what changed in the driver!



They just updated it :) Case closed. Non NVIDIA bug. Application specific. It was cool of them to even tell us how to fix it.

Now we need a Primegrid developer to fix the app.

8) Message boards : AP26 - AP27 Search : 400 series Nvidia drivers slow down AP search (Message 123443)
Posted 95 days ago by Profile mfl0pProject donor
I'll get to work on the changes in the AP app.


2. Nvidia OpenCL Driver changed return value for CL_KERNEL_WORK_GROUP_SIZE from 1024 to 256.


Why?

This change caused the slowdown because the app reverts to slower code that doesn't use the super fast on chip local memory.
9) Message boards : Aggie The Pew message board (Message 123393)
Posted 96 days ago by Profile mfl0pProject donor
i started a little late but should be able to complete about 17 units a day
10) Message boards : Generalized Fermat Prime Search : GFN21 GFN22 Scoreboard, post your times/hardware (Message 123227)
Posted 100 days ago by Profile mfl0pProject donor
GFN21, GTX 1060 6GB on a PCIe x1 link 76,000 sec


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