I'd suggest that Li Yan wants an X10 equivalent of java.net.InetAddress. Since we have permission to port libraries from Harmony, we can put this on the list of desired classes.
I'll open a JIRA feature request for this. SJF ------------------------------------------------------------------------ Stephen Fink IBM T.J. Watson Research Center [email protected] (914)784-7776 From: Igor Peshansky/Watson/i...@ibmus To: Mailing list for users of the X10 programming language <[email protected]> Cc: Yan CRL Li <[email protected]>, Qi Ming Teng <[email protected]> Date: 12/10/2010 08:28 AM Subject: Re: [X10-users] How to Map IP address to Place ID Yan CRL Li <[email protected]> wrote on 12/10/2010 05:35:06 AM: > For this scenario, I know the IP address of each node, I want to know each > Place id corresponding to this IP. > > For example :I put different files on these nodes. I start 5 places on two > physical nodes: > File A, File B are on node 1 with IP: 192.168.1.1 > FileC,File D and File E anre on node 2 with IP :192.168.1.2 > > When I access these Files, I need to know the mapping relationship between > Place ID and IP address. > > But when programming with X10, I only know the place id, I do not know > which node is mapping to this id, how can I do this ? Yan, The mapping of places to nodes is external to X10. When you launch using the sockets or MPI transport, you specify the host list as one of the parameters. The hosts will be picked out of the host list in a round-robin fashion, so you know exactly which host corresponds to which place. If you use an external launcher, e.g., SLURM, you would have to look at the documentation for that system to see how to force it to use particular nodes as specific places. The usual approach is to have a shared filesystem, put all 5 files on it, and let each node access the file that corresponds to its place. I realize that the files may be too large for this to be immediately feasible, but disk space is cheap, and it may end up being the most general solution. Igor -- Igor Peshansky (note the spelling change!) IBM T.J. Watson Research Center X10: Parallel Productivity and Performance (http://x10-lang.org/) XJ: No More Pain for XML's Gain (http://www.research.ibm.com/xj/) "I hear and I forget. I see and I remember. I do and I understand" -- Xun Zi ------------------------------------------------------------------------------ _______________________________________________ X10-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/x10-users ------------------------------------------------------------------------------ Oracle to DB2 Conversion Guide: Learn learn about native support for PL/SQL, new data types, scalar functions, improved concurrency, built-in packages, OCI, SQL*Plus, data movement tools, best practices and more. http://p.sf.net/sfu/oracle-sfdev2dev _______________________________________________ X10-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/x10-users
