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Binary files: compressed or uncompressed?

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Old   April 13, 2018, 11:29
Default Binary files: compressed or uncompressed?
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Agustín Villa
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Hello,

today I wanted to run a simulation in OF5.0, and when I change the writeFormat and compression in the controlDict, I got this warning:

Code:
Selecting compressed binary is inefficient and ineffective, resetting to uncompressed binary
I know, for example, that using compressed ASCII is much less space consuming that the uncompressed one. Does it make a difference in binary?

Thank you for your attention,
Agustin
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Old   April 13, 2018, 12:06
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Did you try it? binary files don't compress as well as ASCII files.
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Old   April 13, 2018, 12:08
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Well, you could do it in OF2.3 and there was no warning at all. I know binary should be better for OpenFOAM to read the files.

So, what do you suggest? Try only binary, or compressed ascii?
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Old   April 13, 2018, 12:43
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Never ASCII, unless you are testing. For production runs always binary uncompressed, unless you are more pressed for space than performance.
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