ParallelMap evaluation leak
- To: mathgroup at smc.vnet.net
- Subject: [mg119451] ParallelMap evaluation leak
- From: Chris Chiasson <chris.chiasson at gmail.com>
- Date: Sat, 4 Jun 2011 06:21:19 -0400 (EDT)
In[1]:= Map[f, Unevaluated@Times[7, 8]]
ParallelMap[f, Unevaluated@Times[7, 8]]
Attributes@Map
Attributes@ParallelMap
$Version
Out[1]= f[7] f[8]
During evaluation of In[1]:= ParallelCombine::nopar1:
Function[Parallel`Combine`Private`e$,f/
@Unevaluated[Parallel`Combine`Private`e$]][56] cannot be parallelized;
proceeding with sequential evaluation. >>
Out[2]= 56
Out[3]= {Protected}
Out[4]= {HoldRest, Protected}
Out[5]= "8.0 for Microsoft Windows (32-bit) (November 7, 2010)"
I would expect the result in both cases to be f[7]*f[8] instead of 56,
regardless of the HoldRest attribute.
Do you agree?
--
http://chris.chiasson.name