Hi,
It seems that issue was resolved or at least the speed of Amber12-cuda with CUDA 4.0 and 4.2 is the same. I tested this last night.
All the best,
Filip
________________________________
From: Jan-Philip Gehrcke <jgehrcke.googlemail.com>
To: AMBER Mailing List <amber.ambermd.org>
Sent: Wednesday, May 16, 2012 2:45 PM
Subject: [AMBER] Is the performance issue of CUDA 4.1 compilers resolved in CUDA 4.2 compilers?
Huhu,
as Ross pointed out before, there is a performance regression in CUDA
4.1 compilers (cf. mail below). On the NVIDIA website, in the meanwhile,
CUDA Toolkit & SDK are available in version 4.2.9:
http://developer.nvidia.com/cuda-downloads
Unfortunately, I cannot find a changelog. Does anyone know for sure if
the discussed issue was resolved with this 4.2.9 release?
Thanks,
Jan-Philip
> Hi Ashraf,
>
> You can use CUDA 4.1 but it is approximately 10 to 15% slower than if you
> used 4.0 due to performance regression bugs within the 4.1 compiler. Our
> advice at present is to use the CUDA 4.0 compilers until such a time as the
> compiler bug is fixed. Hopefully this will be with the release of the 4.2
> compiler.
>
> All the best
> Ross
_______________________________________________
AMBER mailing list
AMBER.ambermd.org
http://lists.ambermd.org/mailman/listinfo/amber
_______________________________________________
AMBER mailing list
AMBER.ambermd.org
http://lists.ambermd.org/mailman/listinfo/amber
Received on Wed May 16 2012 - 05:00:03 PDT
