Issue 819 - fds-smv - Ms - Project Hosting on Google Code

Issue 819:	Ms
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Status:	Verified
Owner:	tkorhon1
Closed:	Nov 23
Type-Defect
Priority-Medium
Application-FDS
Performance

Reported by raoul.deluzain, Jul 21, 2009

Please complete the following lines...

Application Version:5.3.0 (for win32 bits)
SVN Revision Number:
Compile Date:
Operating System: Microsoft Windows XP 32 bits 1.99Ghz 3.40 Go Ram 

Describe details of the issue below:

Hello,

I worked on Fds5 and especially on Evac.

I tried to modele a mesh with 360 X 270 X 12 cells, so 1166400 cells. 
It works when I do only the fire mesh. 

But when I add the human meshes (so three volume of 180 X 135 X 1 cells, 
so I add 72 900 cells), it did not work and I have an error message : 

Memory Allocation failed for __ in the routine INIT

Wtih AG, QG or else after the "for __"


I think my computer has got enough memory, so why when I add only 72 900 
cells it did not works?

Comment 1 by mcgratta, Jul 21, 2009

We'll take a look at the case.

Owner: tkorhon1

Comment 2 by raoul.deluzain, Jul 22, 2009

Thank you very much for your answer, I wait with impatience for your answer.

Comment 4 by tkorhon1, Aug 03, 2009

Well, the solution might be FDS version 5.4.0. FDS+Evac (5.3.1 and older ones) uses
quite much memory for the evacuation meshes. But the latest source code on the SVN
repository has already the "less memory for evacuaton meshes" fix. So, if you can not
wait until the official release of FDS 5.4, then you should compile FDS by yourself.

The other option is to use the win64 (for Windows 64 bit systems), if you have a
Windows machine with 64 bit operating system. Or run FDS in some Linux/Unix machine
where you have 64 bit OS and enough memory.

TimoK

Status: Started
Labels: Application-FDS Performance

Comment 5 by tkorhon1, Sep 24, 2009

The FDS 5.4 consumes much less memory for the evacuation calculation,
so this issue is fixed.

Status: Fixed

Comment 6 by tkorhon1, Nov 23, 2009

Well, we are now already FDS 5.4.2, so I'll change this to "Verified". The FDS 5.4.2
uses less memory for the evacuation meshes than FDS 5.3.

   fds5.4.0, svn3895:
   fire + evac:    616 472 K RAM (Peak Memory usage, winXP32, test1)
   no fire + evac: 556 404 K RAM (Peak Memory usage, winXP32, test2)
   fire + no evac:  63 596 K RAM (Peak Memory usage, winXP32, test0)

   fds5.4.2, svn5104:
   fire + evac:    224 324 K RAM (Peak Memory usage, winXP32, test1)
   no fire + evac: 162 808 K RAM (Peak Memory usage, winXP32, test2)
   fire + no evac:  65 952 K RAM (Peak Memory usage, winXP32, test0)

TimoK

Status: Verified