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Virtual memory problem with parallel runs

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Old   June 15, 2005, 19:24
Default parallel: have a look at the e
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Mattijs Janssens
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parallel: have a look at the examples and documentation that come with lam or mpich.

linux: no idea. Book?
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Old   May 25, 2011, 04:27
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Sandy Lee
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Originally Posted by sampaio View Post
Thanks Mattijs,
It is working now.

But what would be the consequences of an unecessary higher value of this buffer size?

Where can I learn more about all these things (mostly linux and running linux in parallel)? I feel so week (I only later found out that I should put my export MPI_BUFFER_SIZE=xxxxx in my bashrc, but I am not even sure why... I suspect it has to do with exporting to all nodes instead of just the current one...)

Could you provide some pointers (linux and parallel stuff)? Books, online tutorials, etc...

I really feel the need to know better what is happening, but i dont know how to start...

Hi sampaio,

I put " export MPI_BUFFER_SIZE="200000000000000000" " in my etc/bashrc . But when I run "paraFoam", I still get the error information as follows:

new cannot satisfy memory request.
This does not necessarily mean you have run out of virtual memory.
It could be due to a stack violation caused by e.g. bad use of pointers or an out of date shared library

My grids are about 4.67 million. I don't know why? Could you help me?

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