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Old   August 5, 2008, 06:37
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MAB
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I keen getting the following message when i try to run solver. While there is about 50 GB storage available on the disk. what should I do to overcome this problem thank

*** Run-time memory allocation error *** | | Not enough free memory is currently available on the system. | | Could not allocate requested memory - exiting!
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Old   August 5, 2008, 06:50
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Rogerio Fernandes Brito
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how much do you have of memory RAM? I do some kind of simulations and my files are about 80 GB (trn files) and i donīt have this problem. I have only 8 GB of RAM.
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Old   August 5, 2008, 07:04
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MAB
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Hi Rogerio. it is about 4GB RAM. is it because of RAM that I am getting this message. well it is the same problem which i sent you yesterday for meshing. I have done meshing somehow. but now its giving the memory error.
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Old   August 5, 2008, 07:13
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MAB
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also the number of tetra is about 60,00000
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Old   August 5, 2008, 07:13
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Rogerio Fernandes Brito
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increase this memory allocation. When i worked with a Athlon PC XP with only 512 MB of RAM, i did it sometimes and it did work out.
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Old   August 5, 2008, 07:15
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Rogerio Fernandes Brito
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6,000,000.00 of elements?

If it is, you MUST increase your memory (RAM) up to 8 GB!
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Old   August 5, 2008, 09:11
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John
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I'm not sure if this is specifically a system specification problem but it sounds to me like you need to allot more memory for the solver and/or partitioner. Try setting a factor 1.2-2.0 for the partioner and see if that helps.

You might also try setting the expert parameter "topology estimate factor" to a factor of 1.2 or so.
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Old   August 5, 2008, 09:42
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MAB
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hi where I can find this partitioner settings. thanks
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Old   August 5, 2008, 09:53
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John
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If you're running CFX locally through the Solver Manager you'll find input boxes for memory overrides on the Partitioner and Solver tabs. If you submit the job over a network with a script you can set "-sizepar" and "-s" where -sizepar is the partitioner memory override factor and -s is the solver memory override factor.
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Old   August 5, 2008, 10:10
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MAB
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I am in CFX pre and I cant find partitioner option. i know the expert parameter
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Old   August 5, 2008, 10:12
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John
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The partitioner memory allocation option is set in the Solver Manager.
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Old   August 12, 2008, 11:09
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Matthias
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isnīt it like there is not enough free RAM for the Solver to run the simulation? The solver tries to allocate enough memory to store the values; if there isnīt enough... there is "not enough free memory available". I often could get rid of this by allocating less then the 100 percent... like 90. You need approximately 1GB for 500.000 hexaelements or about 1.5mio tetra-elements . Hope that helps.
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Old   August 12, 2008, 11:57
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MAB
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thanks. how can i change this option fom 100% to 90.???
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Old   August 13, 2008, 08:32
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Matthias
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From the Solver-GUI

Define Run-->"Show Advanced Controls"

Solver Tab--> Solver Memory,Memory Alloc Factor =0.9

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Old   December 27, 2014, 20:26
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Matthias said

From the Solver-GUI

Define Run-->"Show Advanced Controls"

Solver Tab--> Solver Memory,Memory Alloc Factor =0.9

It worked completely

thanks you very much, Matthias
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Old   December 30, 2014, 06:38
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try to increase allocation memory factor to 10 on the three options on solver
second question is how many processors/cores /threads do you have ??
Try to divide your simulation on all processors/cores/threads
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Old   December 30, 2014, 21:59
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The error message says "not enough free memory available". This is not a memory allocation problem so the memory allocation factor will not help it. It has simply run out of RAM so it needs more memory. If it was on a 32 bit system it may have maxxed out the 32 bit limit so needs a 64 bit OS and solver.
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