[Darshan-users] Enable DXT
ssnyder at mcs.anl.gov
Mon Feb 13 13:14:02 CST 2017
Are you actually performing any read or write operations to a file in
the application you are linking with Darshan? DXT only traces reads and
writes, so if you are just opening a file (for instance), it shouldn't
produce any DXT data.
If your application is doing reads/writes, there should be DXT data if
you enabled it properly. Did you run 'export DXT_ENABLE_IO_TRACE='? Note
that you need to include the trailing equal sign, even if you aren't
setting a value for the amount of memory to use. For example:
'export DXT_ENABLE_IO_TRACE=' will give you the default 4MiB buffer per
process for tracing
'export DXT_ENABLE_IO_TRACE=8' will instead allocate 8MiB buffers per
On 02/13/2017 11:03 AM, Jean Bez wrote:
> I was just trying to use the new DXT module and although I have set
> the environment variable (DXT_ENABLE_IO_TRACE) to activate it, when I
> attempt to parse the .darshan file with the darshan-dxt-parser I
> always get the message:
> "no DXT module data available for this Darshan log."
> Is there something else we need to do to enable DXT?
> Best regards,
> Darshan-users mailing list
> Darshan-users at lists.mcs.anl.gov
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