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Hey,

one can use fopen to write/read binary data to/from a file.
The same can also be achieved by using open.

What exactly are the differences?

As far as I know fopen is standard C and...

Thank you, this solved the riddle =)

So I learned that reading in BUFSIZ chunks is the most efficient (and therefor fastest) way of doing multiple I/Os.
Also one doesn't need to read in these...

Okay,

so basically you say adjusting the buffer size for fwrite/fread doesn't do any good? I was still under the impression an optimal size has yet to be found ... Thank you for this one.

I was...

Hi,

as final result I want to read/write per random access in binary files to retrieve a block/part of a really large array.

So how could one write such an array as fast as possible to disk?
I...