search

jingyuzhu / efficient-java-matrix-library

Automatically exported from code.google.com/p/efficient-java-matrix-library
0 stars 0 forks source link

Large Memory requirement #28

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
My project is  http://code.google.com/p/jmatrix/

I am working with a large matrix 500MB-1GB. Your ejml is much faster than JAMA 
when doing eigenvalue decomposition. However, JAMA uses the given matrix as 
working area. EJML asks for more memory, which I do not have on my laptop. 

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
Version 0.17, 2011 February 23
Windows-7

Please provide any additional information below.

Original issue reported on code.google.com by dmitry.a...@gmail.com on 31 Jul 2012 at 10:27

GoogleCodeExporter commented 8 years ago 
Which operations are you using?  Are you dereferencing temporary variables 
after you are finished with them so that the JVM can discard the deta? 

Take a look at the memory benchmark below:

http://code.google.com/p/java-matrix-benchmark/wiki/MemoryResults_2012_02

In the tested operations Jama and EJML have comparable results.

Original comment by peter.ab...@gmail.com on 1 Aug 2012 at 5:27

GoogleCodeExporter commented 8 years ago 
Assuming that this is a non-issue due to lack of feedback.

Original comment by peter.ab...@gmail.com on 22 Aug 2012 at 11:11