On 26.04.2014 05:50, Brian Haas wrote: > David - you know quite a bit about Ray. Do you understand how Ray is > leveraging MPI?
Short answer, no. I have used it many times, and managed to hack it a bit. I wouldn't say my knowledge about Ray is extensive, more like my lack of knowledge is extensive. Your best option for this would be to contact Sébastien Boisvert directly (CCd), or via the denovoassembler-users mailing list, because I only have a very vague idea about how the parallel stuff works in Ray. I just know it works really well, mostly from other people saying how wonderful Ray is in their blogs. I recall Sébastien writing a couple of blog-like posts about message passing and virtual messages (which I can no longer find), but that was a long time ago and before the RayPlatform interface was developed. There's a bit of documentation in the RayPlatform Documentation directory: https://github.com/sebhtml/RayPlatform/tree/master/Documentation But it's had most of the assembler-specific things removed from it. I've have quite a lot of trouble finding anything that summarises what's going on behind the scenes. I have found a header file that has message names in it (which was informative for me previously when hacking in a couple of things for testing): https://github.com/sebhtml/ray/blob/master/code/MessageProcessor/MessageProcessor.h And it looks like Sébastien gave a presentation of this topic: http://boisvert.info/dropbox/SciNet/SciNet-presentation-for-computer-scientists.pdf [message stuff starts at pg. 32, but again there's not much specifically about assembly] It's possible you could get your best idea about what's going on by running Ray on a toy dataset and just seeing the message output. Ray is very verbose, which is a very nice thing to have when an assembly can take many, many hours to finish. Hope this helps, - David ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available. Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Denovoassembler-users mailing list Denovoassembler-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/denovoassembler-users
