out of memory.malloc_storage-error

dhakshna · September 28, 2011, 11:04

Hi all,

While running the simulation in Fluent 6.3.26. i am getting this error.

out of memory.malloc_storage: unable to malloc Reconstruction Phi, size 6403648, t 2, myid 1000000.

I have a model which has got upto 8lakhs elements.

My system is core 2 duo processor with 4 gig RAM and 130gp free space.

Can some one guide me on this please.

3DmaniacSLDWRKS · September 28, 2011, 23:21

This is a error that you get when your OS Fails to assign the needed memory to fluents processes. This could happen if you have a Superlarge array or reading a case file over and over again via a scheme file, or you just might have very large number of nodes.
Solutions that I know of include:1 Type in fluent.exe -s... and put a large number in front of -s, the value depends on the amount of memory your system can provide try different values keep increasing it until fluent cant open any more and exits with an error.

2- using dynamic memory allocation if you have a UDF, you can find some info on that on the web. try looking for dynamic memory allocation and heap memory allocaion vs stack memory

m2montazari · September 29, 2011, 17:02

hi,
did you try a 64-bit operating system? I had ran many huge cases with some millions of cells on them and no error!
yours,
mohammad

dhakshna · September 30, 2011, 10:34

Quote:

Originally Posted by m2montazari

hi,
did you try a 64-bit operating system? I had ran many huge cases with some millions of cells on them and no error!
yours,
mohammad

i tried in my laptop it's working..that import in desktop it doesn't work in fluent 6.3.26

September 28, 2011, 11:04	out of memory.malloc_storage-error	#1
dhakshna New Member dhakshnamoorthy Join Date: Sep 2011 Posts: 5 Rep Power: 15	Hi all, While running the simulation in Fluent 6.3.26. i am getting this error. out of memory.malloc_storage: unable to malloc Reconstruction Phi, size 6403648, t 2, myid 1000000. I have a model which has got upto 8lakhs elements. My system is core 2 duo processor with 4 gig RAM and 130gp free space. Can some one guide me on this please.

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September 28, 2011, 23:21		#2
3DmaniacSLDWRKS New Member Jack cosby Join Date: Jul 2011 Posts: 15 Rep Power: 15	This is a error that you get when your OS Fails to assign the needed memory to fluents processes. This could happen if you have a Superlarge array or reading a case file over and over again via a scheme file, or you just might have very large number of nodes. Solutions that I know of include:1 Type in fluent.exe -s... and put a large number in front of -s, the value depends on the amount of memory your system can provide try different values keep increasing it until fluent cant open any more and exits with an error. 2- using dynamic memory allocation if you have a UDF, you can find some info on that on the web. try looking for dynamic memory allocation and heap memory allocaion vs stack memory

September 29, 2011, 17:02		#3
m2montazari Senior Member Mohammad Join Date: Feb 2010 Location: Shiraz, Iran Posts: 108 Rep Power: 16	hi, did you try a 64-bit operating system? I had ran many huge cases with some millions of cells on them and no error! yours, mohammad