[petsc-dev] Matshell with PETSs solvers using GPU

[Han Tran]

Hi,

I am aware that PETSc recently supports solvers on GPU. I wonder whether PETSc supports MatShell with GPU solvers, i.e., I have a user-defined MatMult() function residing on the device, and I want to use MatShell directly with PETSc GPU solvers without any transfer back and forth between host and device. If this is possible, could you let me know how to do this (an example, if any, would be very appreciated)?

Thank you!
Han