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Old   July 23, 2007, 14:24
Default urgent problem
  #1
ahmed
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I am using Windows OS with 2GB of RAM of FLuent 6.18 i get a 'out of memory.malloc_storage: unable to malloc Density' errors when i initiliaze my domain for computation in fluent. can u help me ahmed

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Old   July 23, 2007, 14:59
Default Re: urgent problem
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Joe
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Get more RAM.

and/or

Create smaller meshes.
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Old   July 23, 2007, 15:23
Default Re: urgent problem
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red lemon
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or use 64bit OS with more RAM to avoid going parallel. Or use parallel machines with shared memory. You need about 1Gb RAM for each 1 million cells (mainly for solve/post).
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Old   July 24, 2007, 03:37
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ahmed
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thanks but would you please explain to me in steps 1,2,3.. how i can use prallal system i mean how to connect the two computer to gether and how let the processing going on etc... thanks alo for your intentions
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Old   July 24, 2007, 03:54
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ritmat
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user guide fluent parrallel processor. If you have a dual core processor , you can already try with both of them on this computer.
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Old   July 24, 2007, 15:29
Default Re: urgent problem
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red lemon
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For dual core or dual cpu machine you still need an additional parallel licence. One licence is required per Fluent process of which the first must be a serial licence. To spawn on the cpus start fluent with fluent 3d -t2 -pnet (t2 = 2 processes normally would be on 2 processors, -pnet is interconnect where net/socket is standard lan connection rate). pnet is good for up to about 10-15 cpu's. Bigger clusters need faster interconnects such as myrinet or infiniband otherwise message passing becomes the bottleneck and running such parallel jobs will be very slow.

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