[gabrielmximo]

Hi

Can anyone help me with the error below?



LOOP ITERATION = 1 CPU SECONDS = 2.805E+02

+--------------------------------------------------------------------+
| *** INSUFFICIENT MEMORY ALLOCATED *** |
| |
| ACTION REQUIRED : Increase the real stack memory size. |
| |
| Details : |
| Requested space : 81176478 words |
| Current allocated space : 2147483646 words |
| Current used space : 2110309918 words |
| Current free space : 37173728 words |
| Number of free areas : 1 |
+--------------------------------------------------------------------+


Details of error:-
----------------
Error detected by routine MAKDAT
CDANAM = MIN/VEL_FL1 CDTYPE = REAL ISIZE = 81176478
CRESLT = FULL

Current Directory : /FLOW/SOLUTION/TSTEP1/CLOOP1/ZN1/VERTICES

[ghorrocks]

CFX does an estimate of how much memory it needs to run at the start of the run. Sometimes that estimate is not enough and it fails with a memory error.

The fix is in the error text: "ACTION REQUIRED : Increase the real stack memory size."

You can do this in CFX-Pre, Solver Manager or the command line.

On rare occasions this error is hiding a deeper problem meaning that there is a setup problem. But the first step is just to give it more memory (I usually double it if you have plenty of memory to spare) and see if that fixes it.

[Opaque]

May I ask how you are running this model?

From the error message, the software is trying to allocate space for an 81M+ entries in an array for velocity. That means the current process has a local mesh size of 81M+/3 = 27M+ nodes.

How much memory is available to the process in the node/machine the process is running on?

How large is your model?

Is there another WARNING at the start of the simulation indicating the machine does not have the minimum requirements for the simulation? or

The required memory cannot be allocated for the selected type of executable ?

Using a larger factor before checking if either message is present may lead to another failure.