Re: h2root and large Hbook

Rene Brun (Rene.Brun@cern.ch)
Mon, 01 Mar 1999 17:35:37 +0000

Hi Matt,
I had several reports of a similar problem in converting RWN to ROOT.
They were ALL due to an undefined/invalid floating point value
in one column of the original RWN. Could you check the entries in your
RWN?

Something else. Your ntuple has only 416 entries for a total of 130
Mbytes.
This means that each row of the ntuple is 312 Kbytes !!!
May be you have more than one ntuple in the file.

Rene Brun

Matt Dayon wrote:
>
> Greetings,
>
> I have a large ntuple file (~130 MB) that I want to convert to root using
> h2root. What I get is a simple:
>
> --
>
> RZOPEN. problems determining record length - trying EXCHANGE mode.
> Converting directory //example
> Converting RWN with ID= 313, nentries = 416
>
> *** Break *** floating point exception
> Abort
>
> --
>
> I must admit I may not have set LRECL to a big enough value.
>
> Is there still a way people know of getting the job done?
>
> Thanks,
>
> Matt Dayon