This would form part of the database of useful info at each place I think. Something like a Map[String,Any] where if there was no "IPAddress" then it would simply return null. Other stuff that needs to go into the db includes number of cores, other places on the same host, children places, and general topology information for supercomputer networks.
On Fri, Dec 10, 2010 at 12:54 PM, Stephen Fink <sjf...@us.ibm.com> wrote: > I disagree (it's easy enough to throw an NotIPException if necessary), but > let's take this discussion to the JIRA. > ------------------------------------------------------------------------ > Stephen Fink > IBM T.J. Watson Research Center > sjf...@us.ibm.com > (914)784-7776 > > > > > From: > Benjamin W Herta/Fishkill/i...@ibmus > To: > Mailing list for users of the X10 programming language > <x10-users@lists.sourceforge.net> > Date: > 12/10/2010 12:49 PM > Subject: > Re: [X10-users] How to Map IP address to Place ID > > > > X10 programs can run on non-IP networks. If we add in something like > java.net.InetAddress, then we'll be adding in a utility that works on some > platforms but not others. I prefer the current network-independent > mechanism of only having a simple place ID. As has already been pointed > out, the user controls which place runs on which host, so it's already > possible to indirectly know the IP address. > > > - Ben > > > |------------> > | From: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |Stephen Fink/Watson/i...@ibmus | > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |------------> > | To: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |Mailing list for users of the X10 programming language > <x10-users@lists.sourceforge.net> | > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |------------> > | Date: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |12/10/2010 12:06 PM | > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |------------> > | Subject: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |Re: [X10-users] How to Map IP address to Place ID | > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > > > > > > 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 > sjf...@us.ibm.com > (914)784-7776 > > > > > From: > Igor Peshansky/Watson/i...@ibmus > To: > Mailing list for users of the X10 programming language > <x10-users@lists.sourceforge.net> > Cc: > Yan CRL Li <liyan...@cn.ibm.com>, Qi Ming Teng <teng...@cn.ibm.com> > Date: > 12/10/2010 08:28 AM > Subject: > Re: [X10-users] How to Map IP address to Place ID > > > > Yan CRL Li <liyan...@cn.ibm.com> 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 > X10-users@lists.sourceforge.net > 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 > X10-users@lists.sourceforge.net > 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 > X10-users@lists.sourceforge.net > 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 > X10-users@lists.sourceforge.net > 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 X10-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/x10-users
