[Swift-devel] array_mapper hangs

[Michael Wilde]

Sarah,

The script is hanging because its trying to access the values of the array object f[], which is never set. Ie, at the point at which it wants a value for physD[0] and physD[1], physD itself - even though it has been *mapped* - has never been given a *value.

I think that (or some closely similar reason) is why this script hangs.

The *mapper*, however, os working fine. I re-wrote the script to use the same mapper in a context in which physD *is* set, and it then works, as below.

- Mike

$ cat am2.swift
type file;

app (file o) echo (string s)
{
  echo s stdout=@o;
}

(file physD[]) maptest() {
  foreach s, i in ["x","y"] {
    physD[i] = echo(s);
  }
}

string outfilenames[];
string conditions[] = ["rest1","emblem"];

foreach cond,c in conditions{
  outfilenames[c] = @strcat(cond,"_physio.dat");
}

string sdata[] = ["f1data","f2data"];
file f[] <array_mapper;files=outfilenames>;

f = maptest();
$ 
$ swift am2.swift
Swift svn swift-r3264 (swift modified locally) cog-r2730 (cog modified locally)

RunID: 20100319-2055-xhecsen3
Progress:
Final status:  Finished successfully:2
$ ls *.dat
emblem_physio.dat  rest1_physio.dat
$ more *.dat
::::::::::::::
emblem_physio.dat
::::::::::::::
y
::::::::::::::
rest1_physio.dat
::::::::::::::
x
$ 

----- "Sarah Kenny" <skenny at uchicago.edu> wrote:

> i'm trying to run the following code:
> 
> app (file physD[]) maptest(){
> touch @filename(physD[0]) @filename(physD[1]);
> }
> 
> string conditions[] = ["rest1","emblem"];
> 
> string outfilenames[];
> foreach cond,c in conditions{
> outfilenames[c] = @strcat(cond,"_physio.dat");
> trace(outfilenames[c]);
> }
> 
> file f[] <array_mapper;files=outfilenames>;
> f = maptest();
> 
> but when i try to run it it hangs indefinitely...in my experience this
> *usually* means 'bad mapping' somewhere...not sure if i just have some
> syntactical error here or if something's up with the array_mapper (?)
> 
> 
> _______________________________________________
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> Swift-devel at ci.uchicago.edu
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-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory