How to programming parallel in Cluster
Posted: Mon Jul 04, 2016 8:12 amHi everyone, I'm new in Parallella. I only have experience in software programming.
Now, i have a exercise using parallella cluster. I need to calculate an expression in 16 cores x 4 board . I know that using Epiphany i can calculate parallely in 16 cores. But i want to using all 4 boards to calculate . Can epiphany do this ?
Thanks for reading.
Now, i have a exercise using parallella cluster. I need to calculate an expression in 16 cores x 4 board . I know that using Epiphany i can calculate parallely in 16 cores. But i want to using all 4 boards to calculate . Can epiphany do this ?
Thanks for reading.
Yes, this is very possible and I would think of the dual core ARM as the host and the Epiphany chip as the device (or accelerator.) Similar to how we program GP-GPUs, you could run an MPI process on each Parallella board (the host CPU, so based on what you were saying 4 MPI processes) and then each process will offload some computation to its matching Epiphany chip. Ideally you would try and keep both the host CPU and device Epiphany busy (maybe performing different calculations) for optimal performance, but this is not always possible. In terms of the offload, you could either use the Epiphany API directly or a technology such as COPRTHR 2 (which is well documented here) might suit you well.