[Halld-offline] HDEVIO beta testing

[Richard Jones]

Hello David,

Bravo, it is working for me! No crashes after running on hundreds of files
since I implemented your fix, including old ones that I had marked as bad.
Of course I haven't looked at the results yet... but all evidence so far
indicates that the fix is effective for the problems I was seeing.

-Richard J.

On Thu, Dec 11, 2014 at 12:04 PM, David Lawrence <davidl at jlab.org> wrote:

> Hi Offliners,
>
>   I have checked in some changes to the DAQ plugin that implement an
> alternative for reading in the EVIO
> files. This addresses some of the corruption issues we’ve been seeing,
> particularly with data taken after
> the Thanksgiving break. The new code implements error recovery so that it
> can skip past bad areas it
> detects within the file. It also allows use to reallocate user buffers if
> it runs across a large event (this
> was the problem forcing to allocate 20MB buffers.)
>
>   Testing of this has been *extremely* limited up to now so it is still
> not the default. Early adopters who want
> to help with beta testing can enable it by setting  the #define of
> USE_HDEVIO at the top of the
> DAQ/JEventSource_EVIO.cc file to 1 instead of zero and recompiling.
>
> For those brave souls willing to test this out, please send me any
> feedback. Particularly if you
> come across a file that causes a crash.
>
> Regards,
> -David
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