Seti@Home optimized science apps and information
Optimized Seti@Home apps => Windows => GPU crunching => Topic started by: Raistmer on 02 Sep 2011, 05:19:07 pm
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Under Windows Vista, to prevent long programs from causing a dialog to be displayed
indicating that the display driver has stopped responding, disable the Vista Timeout Detection
and Recovery (TDR) feature, which is trying to detect hangs in graphics hardware. To do this,
use regedit.exe to create the following REG_DWORD entry in the registry, and set its value to 0:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\TdrLevel
This avoids the constant polling by the driver and the kernel to prevent long work units from
monopolizing the device. (To restore default functionality, set the TdrLevel to 3.)
Note that Microsoft strongly discourages disabling this feature, and only recommends doing
so for debugging purposes. Do so at your own risk.
For error-free processing on 7xx-based GPUs, the maximum work-group size is 64. Specifying
a larger size can result in undefined behavior.
The OpenCL runtime currently exposes less than the total amount of memory physically
available on the card.
For some applications, CPU utilization may increase. We hope to resolve this issue in a near
term Catalyst driver release.
The APP Profiler currently provides unreliable results for applications running on AMD Fusion
APU devices.
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Or you can install nVidia nSight & disable it in the menu.