Standards

EPCC joins the OpenACC consortium

Author: Adrian Jackson
Posted: 18 Jul 2013 | 14:00

EPCC has recently joined the OpenACC consortium. OpenACC, a directives-based parallel programming standard, is designed to simplify the programming and utilisation of heterogenous computer systems, where standard CPUs and accelerators (such as GPUs) are combined.   Using OpenACC, developers can specify loops and regions of code in standard C, C++ and Fortran to be offloaded from a CPU to an attached accelerator, and also target parallelism on a range of different CPUs and accelerators without having to modify source code.

MPI: sending and receiving in multi-threaded MPI implementations

Author: Daniel Holmes
Posted: 5 Jul 2013 | 16:06

Have you ever wanted to send a message using MPI to a specific thread in a multi-threaded MPI process? With the current MPI Standard, there is no way to identify one thread from another. The whole MPI process has a single rank in each communicator.

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