Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

Table and ParallelTable. Strange behaviour.

• To: mathgroup at smc.vnet.net
• Subject: [mg103365] Table and ParallelTable. Strange behaviour.
• From: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
• Date: Thu, 17 Sep 2009 06:21:55 -0400 (EDT)

Hi,

can someone confirm the following:

In[12]:= Table[j, {j, 0.1, 0.3, 0.1}]
Out[12]= {0.1, 0.2, 0.3}

as expected. But

In[13]:= ParallelTable[j, {j, 0.1, 0.3, 0.1}]
Out[13]= {0.1, 0.2}

and it seems  to be restricted to the first range spec since

In[14]:= ParallelTable[{i, j}, {j, 0.1, 0.3, 0.1}, {i, 0.1, 0.3, 0.1}]
Out[14]= {{{0.1, 0.1}, {0.2, 0.1}, {0.3, 0.1}}, {{0.1, 0.2}, {0.2,  
0.2}, {0.3, 0.2}}}

This is so fundamental that I'm very certain someone else must have  
been stumbled
over this before me. I tested this on

Mac OS X 10.6 Snow Leopard with Mathematica 7.0.1 (2 ParallelKernels)

and

Mac OS X 10.5.7 Leopard with Mathematica 7.0.1 (8 ParallelKernels but only 4  
used for this)

Cheers
Patrick

• Follow-Ups:
  • Re: Table and ParallelTable. Strange behaviour.
    • From: Syd Geraghty <sydgeraghty@me.com>