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iAndrei
Journeyman III

PCI Express Bandwidth

Throughput at copying from host to device - 50 MB/c???. From device to host - 2300 MB/c (normal). Comments?
Test NVIDIA oclBandwidthTest.
System:
AMD Stream 2.0
Driver 9.12 Hotfix.
PCI Express 2.0
X58 i7-920
ASUS P6T
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genaganna
Journeyman III

Originally posted by: iAndrei Throughput at copying from host to device - 50 MB/c???. From device to host - 2300 MB/c (normal). Comments? Test NVIDIA oclBandwidthTest. System: AMD Stream 2.0 Driver 9.12 Hotfix. PCI Express 2.0 X58 i7-920 ASUS P6T


Could you please post your complete output here? Which GPU you have.

This is what i am getting on my system

For GPU

====================================================

oclBandwidthTest.exe Starting...

WARNING: NVIDIA OpenCL platform not found - defaulting to first platform!

Running on...

 Device Juniper
 Quick Mode

 Host to Device Bandwidth, 1 Device(s), Paged memory, direct access
   Transfer Size (Bytes)        Bandwidth(MB/s)
   33554432                     1448.4

 Device to Host Bandwidth, 1 Device(s), Paged memory, direct access
   Transfer Size (Bytes)        Bandwidth(MB/s)
   33554432                     1350.8

 Device to Device Bandwidth, 1 Device(s)
   Transfer Size (Bytes)        Bandwidth(MB/s)
   33554432                     28016.2

====================================================

For CPU

====================================================

oclBandwidthTest.exe Starting...


WARNING: NVIDIA OpenCL platform not found - defaulting to first platform!

Running on...

 Device AMD Phenom(tm) 9650 Quad-Core Processor
 Quick Mode

 Host to Device Bandwidth, 1 Device(s), Paged memory, direct access
   Transfer Size (Bytes)        Bandwidth(MB/s)
   33554432                     2257.7

 Device to Host Bandwidth, 1 Device(s), Paged memory, direct access
   Transfer Size (Bytes)        Bandwidth(MB/s)
   33554432                     2298.1

 Device to Device Bandwidth, 1 Device(s)
   Transfer Size (Bytes)        Bandwidth(MB/s)
   33554432                     4417.6

====================================================

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