I've got one more example for the examples/compute which is broadly the same as the cublas_matmul, but instead of synchronising cublas calls using an hpx future, it synchronizes cuda kernels in the same way.
I'll try to commit it this week. JB -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tim Biedert Sent: 21 February 2018 09:39 To: [email protected] Subject: Re: [hpx-users] CUDA in HPX Hi Hartmut, thanks! I also found these examples: https://github.com/STEllAR-GROUP/hpx/tree/master/examples/compute Should be a good starting point for some experiments. Best, Tim On 20.02.2018 13:49, Hartmut Kaiser wrote: > Tim, > >> what's the correct way to use CUDA with HPX nowadays? I've seen the >> HPXCL GSoC project, but apparently there is also a HPX_WITH_CUDA >> option in CMake now. >> >> I have a hard time finding clear documentation on this. > That's because there is no documentation. > > CUDA support in HPX is experimental at best. We appreciate any help we can > get improving the picture. > > We have two different ways of integrating with CUDA: HPXCL and HPX.Compute. > > HPXCL is a separate project providing a set of HPX components that allow to > talk to a GPU device, even remotely. The API exposed resembles OpenCL to some > extent, but if you look at the existing examples you should find your way > around. > > HPX.Compute is part of the main repository. It mainly consists of a very low > level facility that allows to spawn any CUDA kernel on a local GPU device > from your C++ code and representing this as a future you can use to > synchronize the kernel execution with your cpu work. It also has higher level > facilities that use this facility to implement some of the parallel > algorithms (including the use of parallel::copy for transparent and > asynchronous data transfer). HPX.Compute also has some allocators and > executors that help managing data and execution locality. > > HTH > Regards Hartmut > --------------- > http://boost-spirit.com > http://stellar.cct.lsu.edu > > > _______________________________________________ > hpx-users mailing list > [email protected] > https://mail.cct.lsu.edu/mailman/listinfo/hpx-users _______________________________________________ hpx-users mailing list [email protected] https://mail.cct.lsu.edu/mailman/listinfo/hpx-users
