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viennacl / viennacl-dev

Developer repository for ViennaCL. Visit http://viennacl.sourceforge.net/ for the latest releases.
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Fuse a scheduler with the kernel generator #8

Open karlrupp opened 11 years ago

karlrupp commented 11 years ago

For operations such as x = y + z; x = y - z; there are currently two separate kernels launched, leading to unnecessary memory transfers. Expression templates are not enough to resolve this, so we need a micro-scheduler for fusing operations and passing them on to a kernel generator facility.

ptillet commented 11 years ago

I have a question concerning the scheduler :) Do you intend to just overload the operator= for the scheduler, and work with the trees from viennacl::generator::matrix_expression<>, or keep the things duplicated for now and do some kind of conversions from viennacl::matrix_expression<> to viennacl::generator::matrix_expression<> ?

karlrupp commented 11 years ago

I have to keep things duplicated, because CUDA and OpenMP still need to be supported.

karlrupp commented 11 years ago

Scheduler now working and used for getting fast GEMM kernels in. Further improvements along 1.5.x releases.

karlrupp commented 9 years ago

The integration for 1.6.0 was successful. Still some more potential for integrating also sparse operations and such, but this will follow later -> 1.7.0

karlrupp commented 9 years ago

Too disruptive for 1.x.y release series. Have to postpone this to 2.0.0.