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MathGroup Archive 2009

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ParrallelDo and set::noval

  • To: mathgroup at smc.vnet.net
  • Subject: [mg102562] ParrallelDo and set::noval
  • From: guerom00 <guerom00 at gmail.com>
  • Date: Fri, 14 Aug 2009 05:58:41 -0400 (EDT)

Hello everyone :)

I copy/paste =93as it is=94 a bit of code I have :

GridInR =
  TransDipPiPi // {2 #1} & @@@ # & // Flatten // DeleteDuplicates //
   Sort;

Mu1DoubletPi = Array[Null, {Length[GridInR]}];

DistributeDefinitions[GridInR, Mu1DoubletPi, TransDipPiPi]

ParallelDo[
 iroot = 0;
 rr = GridInR[[i]];
 Which[
  4 <= rr <= 50, iroot = 1
  ];
 Mu1DoubletPi[[i]] =
  TransDipPiPi //
     Select[#,
       2 #[[1]] == GridInR[[i]] && #[[2]] == iroot && #[[3]] ==
          iroot &] & // {2 #1, #6} & @@@ # & // #[[1]] &;
 , {i, 1, Length[GridInR]}]

And when I execute this, I receive a =93Set::noval: Symbol Mu1DoubletPi
in part assignment does not have an immediate value.=94
I understand the meaning of this error message but I don't understand
why I obtain it !
I make sure to initialize my Mu1DoubletPi list and to distribute the
definition of all the needed symbols across the kernels=85

What do I miss here ?

TIA

Mathematica 7.0.1 on Mac OS X 10.5.8.


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