[Darshan-users] darshan-parser --file

[Shane Snyder]

Hi Colm,

The '--file' flag gives some details on the accesses to files of 
different types:

* total => files of all types (i.e., all other types below combined)
* read_only => the file was only read
* write_only => the file was only written
* read_write => the file was both read and written
* unique => the file was accessed by a single rank
* shared => the file was accessed by every application rank

For each file type, the first column is the count of files for that 
type, the second column is number of bytes moved to/from the file for 
that type, and the third column is the maximum file offset accessed.

I'm making a note to better document what kind of data each of the 
parser flags outputs for our next release so hopefully its more clear. 
In the meantime, you can see more detailed documentation on various 
Darshan tools here: 
http://www.mcs.anl.gov/research/projects/darshan/docs/darshan3-util.html

--Shane

On 08/17/2016 05:37 AM, Colm O'Shaughnessy wrote:
> Hi,
>
> When using the "--file" flag for the darshan-parser tool, I was a 
> little unsure about what certain figures meant. Under "files" in the 
> POSIX/MPIIO sections, what do the three figures following "total", 
> "read_only", "write_only" (etc.) mean?
>
> Example:
>
> # *******************************************************
> # POSIX module data
> # *******************************************************
>
> # files
> # -----
> # total: 15 404420357 201111068
> # read_only: 4 203309289 201111068
> # write_only: 1 201111068 201111068
> # read_write: 0 0 0
> # unique: 13 203309289 201111068
> # shared: 2 201111068 201111068
>
> For "total", what do the "15 404420357 201111068" mean?
>
> Thanks,
> Colm
>
>
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