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-   -   Maximum words supported by the flow solver exceeded (http://www.cfd-online.com/Forums/cfx/118884-maximum-words-supported-flow-solver-exceeded.html)

rae June 6, 2013 01:24

Maximum words supported by the flow solver exceeded
 
I am running CFX-Solver on a Windows 64XP OS. The problem is large - 190M mesh elements.

I did a partition run with the large problem partitioner which seems OK. Then with a full run using the partition that part runs OK but I get the following error from the solver when it starts:

+--------------------------------------------------------------------+
| Memory Allocated for Run (Actual usage may be less) |
+--------------------------------------------------------------------+

Allocated storage in: Mwords
Words/Node
Words/Elem
Mbytes
Bytes/Node

Partition | Real | Integer | Character | Logical | Double
----------+------------+------------+-----------+----------+----------
1 | 19479.56 | 1324.77 | 3.92 | 0.12 | 0.91
| 2146.17 | 145.96 | 0.43 | 0.01 | 0.10
| 420.44 | 28.59 | 0.08 | 0.00 | 0.02
| 74308.64 | 5053.60 | 3.74 | 0.11 | 6.93
| 8584.67 | 583.83 | 0.43 | 0.01 | 0.80
----------+------------+------------+-----------+----------+----------

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| The total number of words needed by the master for the Real stack |
| exceeds the maximum supported by the flow solver: 2,147,483,647. |
| Please reduce the memory usage. |
| |
| |
| |
+--------------------------------------------------------------------+

The thing is I have increased the solver's memory allocation factor to 4 and the master's Real Stack allocations (seen in the table above) change accordingly, but the maximum supported by the flow solver doesn't change at all.

If anyone can suggest what this strange flow solver limit, which is below that allocated, is set or caused by it would be much appreciated.

Thanks.

ghorrocks June 6, 2013 06:14

Have you installed ANSYS CFX for 64 bit or 32 bit?

rae June 6, 2013 06:41

Installed ANSYS for 64bit. Thanks for asking.

ghorrocks June 6, 2013 06:49

I suspect what you are seeing is that the partition size you are using is too big for the solver to handle. You are going to have to partition it into smaller partitions.


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