[Swift-devel] [Swift-user] What system calls do the mappers use?

[Michael Wilde]

Did this all out of the User Guide or did it never get in there?

Either way, could you (or better yet, Yadu) add it (back)?

Just curious, what keyType values make sense? Not boolean or float, I assume.

Not arrays, files, structures either, I assume?  So really just int and strings are practical?

Thanks,

- Mike


----- Original Message -----
> From: "Mihael Hategan" <hategan at mcs.anl.gov>
> To: "Michael Wilde" <wilde at mcs.anl.gov>
> Cc: "Lorenzo Pesce" <lpesce at uchicago.edu>, "Swift User Discussion List" <swift-user at ci.uchicago.edu>
> Sent: Wednesday, March 20, 2013 4:52:17 PM
> Subject: Re: [Swift-user] What system calls do the mappers use?
> 
> They are in trunk. They should also be in 0.94.
> 
> You declare them as:
>   valueType[keyType] arrayName;
> For example:
>   int[string] a;
>   a["one"] = 1;
> 
> Mihael
> 
> On Wed, 2013-03-20 at 16:04 -0500, Michael Wilde wrote:
> > Lorenzo,
> > 
> > All Swift arrays are varying in size: you dont declare the array
> > size in the declaration. Further, they can be sparse (because the
> > implementation is in fact a hashtable).
> > 
> > Swift has code that supports user-level hashes by by declaring
> > arrays with string instead of integer keys. I thought this made it
> > to the User Guide but I see now that it did not. Its
> > possible/likely thats because the code is not in trunk yet.
> > 
> > Can anyone on the devel team reply with the status of associative
> > arrays?
> > 
> > Thanks,
> > 
> > - Mike
> > 
> > ----- Original Message -----
> > > From: "Lorenzo Pesce" <lpesce at uchicago.edu>
> > > To: "Michael Wilde" <wilde at mcs.anl.gov>
> > > Cc: "Swift User Discussion List" <swift-user at ci.uchicago.edu>
> > > Sent: Wednesday, March 20, 2013 3:43:19 PM
> > > Subject: Re: [Swift-user] What system calls do the mappers use?
> > > 
> > > Can one make hashes of arrays in or arrays of arrays of different
> > > sizes in swift?
> > > e.g., and array of an array type of variable size?
> > > 
> > > On Mar 20, 2013, at 3:41 PM, Michael Wilde wrote:
> > > 
> > > > 
> > > > Also, to answer your question more directly: "I dont know".
> > > >  You
> > > > can try to answer this by writing some very simple swift
> > > > scripts
> > > > that do the kinds of built-in mappings you are looking at, and
> > > > use
> > > > strace() wuth suitable filtering and grepping do see what Swift
> > > > (via Java) is doing to implement the mapping.
> > > > 
> > > > Mihael may be able to point you to the Java classes that do the
> > > > mapping to distill this process further.
> > > > 
> > > > - Mike
> > > > 
> > > > 
> > > > ----- Original Message -----
> > > >> From: "Lorenzo Pesce" <lpesce at uchicago.edu>
> > > >> To: "Swift User Discussion List" <swift-user at ci.uchicago.edu>
> > > >> Sent: Wednesday, March 20, 2013 3:27:05 PM
> > > >> Subject: [Swift-user] What system calls do the mappers use?
> > > >> 
> > > >> Hi --
> > > >> 
> > > >> I am working with mappers that might be repeated thousands of
> > > >> times
> > > >> in each workflow run.
> > > >> Lustre doesn't like that type of search when it is based on
> > > >> approaches similar to "ls", on the other hand "find" works
> > > >> fine.
> > > >> 
> > > >> I could conceivably find a work around, but I would rather not
> > > >> have
> > > >> to do it.
> > > >> 
> > > >> Lorenzo
> > > >> _______________________________________________
> > > >> Swift-user mailing list
> > > >> Swift-user at ci.uchicago.edu
> > > >> https://lists.ci.uchicago.edu/cgi-bin/mailman/listinfo/swift-user
> > > >> 
> > > 
> > > 
> > _______________________________________________
> > Swift-user mailing list
> > Swift-user at ci.uchicago.edu
> > https://lists.ci.uchicago.edu/cgi-bin/mailman/listinfo/swift-user
> 
> 
>