UPC++ v1.0 Testimonials

Below are some testimonials from users of the UPC++ library

"We found UPC++ to be a very powerful and flexible tool for the development of parallel applications in distributed memory environments that enabled us to reach the high level of performance required by our DepSpawn project, so that we could outperform the state-of-the-art approaches. It is also particularly important in our opinion that, while supporting a really wide range of mechanisms, it is very well documented and supported."

-- Basilio Bernardo Fraguela Rodríguez, Universidade da Coruña, Spain.

"UPC++ exposes a powerful and intuitive model for communication and computation, making what can otherwise be challenging concepts (one-sided memory operations, async execution, etc.) approachable for application developers. In our work modernizing the distributed data model of a legacy geophysical application, we found that UPC++ offered us a more concise, understandable, and performant model for expressing one-sided communication than MPI-3 RMA, while also offering interoperability with other parallel programming libraries / tools used elsewhere in the codebase (e.g. MPI-IO, OpenMP). Further, the documentation (Specification, Programmer's Guide, etc.) is an invaluable resource for building a solid understanding of key concepts, common idioms, and correctness concerns when developing UPC++ applications. Indeed, the Pagoda team clearly prioritizes making their work accessible to users."

-- Scott French, Berkeley Seismological Laboratory, U.C. Berkeley; Now at Google, LLC.

"UPC++ is now my programming language of choice for all applications where performance matters, both on HPC systems and single multicore servers. I have used it to completely rewrite a genome assembly application that was originally written in UPC and MPI, and have also written an agent-based cell-level model of viral infection and immune response in the lungs. UPC++ has an excellent blend of ease-of-use combined with high performance. Features such as RPCs make it really easy to rapidly prototype applications, and still have decent performance. Other features (such as one-sided RMAs and asynchrony) enable fine-tuning to get really great performance."

-- Steven Hofmeyr, Lawrence Berkeley National Laboratory

"If your code is already written in a one-sided fashion, moving from MPI RMA or SHMEM to UPC++ RMA is quite straightforward and intuitive; it took me about 30 minutes to convert MPI RMA functions in my application to UPC++ RMA, and I am getting similar performance to MPI RMA at scale."

-- Sayan Ghosh, Pacific Northwest National Laboratory

"With UPC++, we were able to rapidly prototype and test hypotheses regarding various implementation approaches to important communication patterns. We found that UPC++ provided not only programmability and good user tools, but also offered such scalable communication performance over our MPI application code base, that we plan to migrate the code to UPC++."

-- Marquita Ellis, UC Berkeley & Lawrence Berkeley National Laboratory

"UPC++ enabled me to express the remote communication operations used in my actor library in a concise fashion. The main advantage of UPC++ is that it reconciles a high-level, well thought-out interface with the realities of modern interconnection fabrics. RPCs and completions make it easy to overlap computation and communication, a necessity for reaching the best possible performance."

-- Alexander Pöppl, Technical University of Munich, Germany

"UPC++ offers an intuitive programming model that captures close-to-the-metal communication performance over a wide range of platforms. Applications where latency dominates communication costs will see a benefit, e.g. due to fine-grained irregular data movement patterns. As a C++ model, UPC++ musters expressive power that reduces development times and enhances software maintainability. The UPC++ remote procedure call is a particularly powerful construct, and economizes the expression of correct and performant code."

-- Scott Baden, University of California, San Diego and Inria International Chair

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