Hi, I run bandwidthtest of SDK3.2 on my NITRO T5 TESLA QUAD system with 4 C2050 GPU. The result is unstable. The transfer speed fluctuates widely, especially host to device bandwidth, near to 15%. Is it normal? What’s the problem? PIC-e?
Btw, I replaced C1060 by C2050 on the same deskside system. Bandwidthtest running on C1060 is quite stabler than C2050.
Running on…
Device 0: Tesla C2050
Quick Mode
Host to Device Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2518.9
Device to Host Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 1553.2
Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 84237.8
[bandwidthTest] - Test results:
PASSED
Running on…
Device 0: Tesla C2050
Quick Mode
Host to Device Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 2265.1
Device to Host Bandwidth, 1 Device(s), Paged memory
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 1678.6
Device to Device Bandwidth, 1 Device(s)
Transfer Size (Bytes) Bandwidth(MB/s)
33554432 84141.1
[bandwidthTest] - Test results:
PASSED