PRODUCTS
Mathematica
Mathematica Home Edition
Mathematica for Students
Mathematica for the Classroom
grid
Mathematica
Wolfram Lightweight Grid Manager
web
Mathematica
Mathematica Player
(free download)
Mathematica Player Pro
Wolfram
Workbench
Mathematica
Applications
SOLUTIONS
Industry
Chemical Engineering
Image Processing
Mechanical Engineering
Petroleum Engineering
Environmental Sciences
Bioinformatics
Data Analysis and Mining
Financial Risk Management
Statistics
Software Engineering
More...
Education
Higher Education
Precollege Education
Students
Technology
Interactive Deployment
High-Performance and Parallel Computing (HPC)
See Also: Technology Guide
PURCHASE
Online Store
Other Ways to Buy
Volume & Site Licensing
Contact Sales
Software
Service
Upgrades
Training
Books
FOR USERS
All User Resources
Product Registration
Technical Support
Customer Service
Developer Support
Does My Site Have a License?
Free Seminars
Learning Center
Training
Custom Group Seminars
Documentation & Examples
Tutorial Screencasts
Video Gallery
Demonstrations Project
Education Portal
Student Resources
COMPANY
About Wolfram Research
News & Events
Wolfram Blog
Employment Opportunities
History of
Mathematica
Stephen Wolfram's Home Page
Contact Us
OUR SITES
Wolfram|Alpha
Demonstrations Project
Wolfram Blog
MathWorld
Integrator
Wolfram Functions Site
Mathematica Journal
Wolfram Library Archive
Wolfram
Tones
Wolfram Science
Stephen Wolfram
DOCUMENTATION CENTER SEARCH
Mathematica
>
Systems Interfaces & Deployment
>
Parallel Computing
>
Data Parallelism
>
Mathematica
>
Core Language
>
Tuning & Debugging
>
Parallel Computing
>
Data Parallelism
>
Built-in
Mathematica
Symbol
Map
ParallelTry
ParallelTable
Parallelize
See Also »
|
Data Parallelism
Parallel Computing
Summary of New Features in 7.0
New in 7.0: Alphabetical Listing
New in 7.0: Core Language
New in 7.0: Systems Interfaces & Deployment
More About »
ParallelMap
ParallelMap
[
f
,
expr
]
applies
f
in parallel to each element on the first level in
expr
.
ParallelMap
[
f
,
expr
,
levelspec
]
applies
f
in parallel to parts of
expr
specified by
levelspec
.
MORE INFORMATION
ParallelMap
is a parallel version of
Map
, which automatically distributes different applications of
f
among different kernels and processors.
ParallelMap
will give the same results as
Map
, except for side effects during the computation.
ParallelMap
uses the same level specifications as
Map
. Not all level specifications can be parallelized.
Parallelize
[
Map
[
f
,
expr
]]
is equivalent to
ParallelMap
[
f
,
expr
]
.
If an instance of
ParallelMap
cannot be parallelized it is evaluated using
Map
.
ParallelMap
takes the same
Method
option as
Parallelize
.
EXAMPLES
CLOSE ALL
Basic Examples
(3)
In[1]:=
Out[1]=
Use explicit pure functions:
In[1]:=
Out[1]=
Functions used need to be distributed first:
In[1]:=
In[2]:=
In[3]:=
Out[3]=
Possible Issues
(1)
SEE ALSO
Map
ParallelTry
ParallelTable
Parallelize
MORE ABOUT
Data Parallelism
Parallel Computing
Summary of New Features in 7.0
New in 7.0: Alphabetical Listing
New in 7.0: Core Language
New in 7.0: Systems Interfaces & Deployment
New in 7