[petsc-users] cudaSetDevice

[Jed Brown]

Harshad Sahasrabudhe <hsahasra at purdue.edu> writes:

> Hi Jed,
>
> Sometime back we talked about an interface which could handle other
> libraries calling cudaSetDevice simultaneously with PETSc. For
> example, in our case 2 different instances of PETSc calling
> cudaSetDevice.
>
>>Sure, but how will we actually share the device between libraries?  What
>>if the other library was not PETSc, but something else, and they also
>>called cudaSetDevice, but with a different default mapping strategy?
>
>>We need an interface that handles this case.
>
> Do we already have any solution for this? If not, can we start looking at this case?

Yes, I'm hoping Karl and/or Dominic will weigh in.
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