cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Archives Discussions

madam
Journeyman III
‎02-23-2010 11:31 PM

Does PCI-e 1.1 affect the OpenCL performance?

<!-- @page { size: 21cm 29.7cm; margin: 2cm } P { margin-bottom: 0.21cm } -->

PCI-e 2.0 doubles the bandwidth of PCI-e 1.1 standard. It's known that in most cases it doesn't really affect the card performance as the old one hasn't been yet exhausted by the applications. However I suppose that Stream technology and OpenCL may be more bandwidth-hungry than standard graphical application.

Would placing Radeon 5570 in an old PCI-e slot limit its OpenCL/Ati Stream performance?



0 Likes
1 Reply
gaurav_garg
Adept I
‎02-26-2010 05:46 AM

It depends....if your application is bottleneck by host-device data transfer. You are right, stream aplications are sometimes host-device bandwidth limited, specially if you running your kernel for smaller matrices.

0 Likes