Can you post the code? We can't really debug it if we don't know what it looks like.

PS: Since you're new here you should have a look at How (Not) To Ask A Question

Update: Other details like the operating system, filesystem (eg NFS), etc could be helpful too. Does the file get created? Does it have some but not all of the data?

In reply to Re: Write Large data by superfrink
in thread Write Large data by aliroshan

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