[LAD] CUDA

[Jens M Andreasen]

On Thu, 2008-09-04 at 18:41 +0200, elthariel wrote:
> Hello,
> 
> Thank you for updating this very interresting post.
> Do you have any website where you update the status of your work,
> publish some test codes ?
> 

The test code used is the (unmodified) bandwitdhTest provided with the
cuda SDK and run with the following arguments:

$ ./bandwidthTest --memory=pinned --htod --mode=range --start=1024\
 --end=10240 --increment=1024 
 
Range Mode
Host to Device Bandwidth for Pinned memory
..........
Transfer Size (Bytes)   Bandwidth(MB/s)
     1024               44.4
     2048               92.1
     3072               50.7
     4096               184.3
     5120               207.8
     6144               258.1
     7168               299.8
     8192               188.7
     9216               374.0
    10240               406.9


The call used in the test is blocking and busy spinning. It is possible
- actually quite easy - to do the equivalence in a non-blocking fashion,
say to let the Intel chip immediately do some touch-up and output the
result from the previous run, as well as start gathering and prepare
data for the next run.


> Cheers

/j