memory problem
 

hi everyone,
i am running cfx in our workstation having 64gb ram and 500 GB hard disc. rest of hdd memory is using foe rid backup. i am running a cfx with 5crore elements. but in each solution it is showing that "run time memory allocation error. not enough memory is available in your system". i am searching the solution for too many days. i have already read almost all the thread about memory in cfx forum. but i am not getting a solution. what may be problem friends? please help me. this 5crore is not a problem for a 65gb workstation having 12cores and using windows 7 64 bit. any help from anybody is appreciable. this is the last hope for my problem

The message means exactly what is says - you have run out of memory on your machine. Some possibilities are:
1) You have other applications running which means CFX cannot get the 64GB.
2) You have a 32 bit OS installed - check that you really do have a 64 bit OS.
3) You have the 32 bit version of CFX installed - then uninstall it and install the 64 bit version.

THANK YOU ghorrocks
I HAVE CHECKED THESE SOLUTIONS MANY TIMES.
no other applications are running in my workstation and my workstation is installed with a 64bit windows 7 and Ansys is also 64 bit version. what should i do to rectify this problem?

hi AKHILESH S L,

try the following:
when u are in CFX-solver manager and the "Define Run" window appears select "Show Advanced Controls" in "Run Definition" ... after that u can go to "Partitioner" and there you can enter a value in the field "Memory Alloc Factor" ... the standard value is 1.0 ... increase this number with 1.2 or 1.4 ... after that u have to select "Detailed Memory Overrides" ... there u have to enter the same value in the field "Real Memory" ... but do NOT forget the suffix "x" i.e. 1.2x or 1.4x ... after that u can start the run ... maybe its better if u try 8 cores in a first run ...

good luck

THANK YOU TrII4d
thank you very much for spending your valuable time for this detailed reply. this is the first time i am getting a reply with a positive feeling. i will try this solution and let you know whether it works or not. thank you once again from the bottom of my heart.

you are welcome :) ... i hope this works ... if not ... do not hesitate to ask ...

by the way ... trivandrum is a nice place ... i visited it last year ;) ... great temple :)

At what stage of the solution do you get the memory error? (Pre-processor, partitioning, solving, post-processing?)

How big is the simulation you are running?

How are you running it? Single processor? Multiprocessor? (then how many processes?)

thank you TrII4d
it worked...:) thanks a lot my dear friend. it is now running smoothly. thank you from the bottom of my heart. by the way you are always welcome to Trivandrum....god's own place...:)

dear ghorrocks
the error appeared in the solving stage only. now it got solved. running in local parallel 4 cores. total 2crore elements are there. thank you very much for your reply. :)