January tea-time: Kokkos Comm: Performance-Portable Communication API for Distributed Kokkos Applications
January 17st 2026: Kokkos tea-time
CExA organizes the 15th Kokkos tea-time on Wednesday, December the 17th, 2025 for 45min starting at 7AM Pacific, 10AM Eastern, 4PM Paris, 11PM Tokyo. It can be followed on Zoom, or by phone.
Kokkos Comm: Performance-Portable Communication API for Distributed Kokkos Applications
Kokkos Comm is a lightweight C++ library providing performance-portable explicit communication primitives for distributed Kokkos applications. It aims to eliminate code duplication across the Kokkos ecosystem by centralizing solutions to common pain points. Kokkos Comm addresses critical integration challenges between the Kokkos execution model and distributed memory programming by automatically handling GPU awareness, non-contiguous data marshalling, and view lifetime management. It features a minimal asynchronous API that exposes a streamlined subset of the usual point-to-point and collective operations, while preserving flexibility and abstracting backend-specific complexity. The design is centered around simple, composable, and extensible interfaces, ensuring near-zero overhead compared to hand-rolled solutions. Currently, MPI and NCCL backends are supported, with other GPU-oriented (RCCL, oneCLL) and NIC-oriented (OFI, UCX, Portals) backends being explored. Built with C++20, Kokkos Comm maintains performance portability across complex heterogeneous systems (multi-GPU, multi-NIC) while serving as a research platform for advanced communication patterns, parallel programming models and standardization efforts. Kokkos Comm’s philosophy is simple: easy to use, hard to misuse.
Additional info
Zoom link
In a web browser or from the application.
- Meeting ID: 923 971 90835
- Passcode: 218480
One tap mobile
- France: +33170950350,,92397190835#,,,,*218480#
- France: +33186995831,,92397190835#,,,,*218480#
- US: +12532158782,,92397190835#,,,,*218480#
- US: +13462487799,,92397190835#,,,,*218480#
By phone
- Meeting ID: 923 971 90835
- Meeting Passcode: 218480
Dial by your location
- +33 1 7095 0350 France
- +33 1 8699 5831 France
- +49 695 050 2596 Germany
- +49 69 7104 9922 Germany
- +1 564 217 2000 USA
- +1 646 931 3860 USA
- +81 3 4579 0545 Japan
- +81 3 4579 0432 Japan
- Numbers for other countries
