[petsc-dev] Possible bugs when using TS with ViennaCL (continued)

[Karl Rupp]

Hi Mani,

 > Sorry, you're right. Indeed even when I use the Intel OpenCL to run on
> the CPU, the memory usage keeps increasing as the run progresses but the
> CPU RAM is so much that the run doesn't crash till the time I ran it. So
> basically there is a memory leak.

Thanks, that certainly helps with the diagnostics. :-)

Best regards,
Karli




> On Tue, Jan 28, 2014 at 2:58 PM, Karl Rupp <rupp at mcs.anl.gov
> <mailto:rupp at mcs.anl.gov>> wrote:
>
>     Hi Mani,
>
>
>      > Note that the error occurs in the middle of the run, after a certain
>
>         number of time steps. The time step at which it fails is
>         different for
>         the two machines for which I tested. And it only happens when I
>         use the
>         GPU. The OpenCL backend using a CPU with Intel opencl works fine.
>
>
>     what exactly do you mean by 'works fine' for the Intel OpenCL SDK?
>     Do you see an increase in memory, or is the memory consumption
>     constant throught the run? You won't necessarily see an allocation
>     failure because your machine will most likely have enough main RAM
>     to compensate.
>
>     Best regards,
>     Karli
>
>