Re: [Starpu-devel] Starpu stats about disk, OOC, and swapping

[Amani Alonazi <amani.alonazi@kaust.edu.sa>]

On Mon, Jan 14, 2019 at 9:31 PM Samuel Thibault <samuel.thibault@inria.fr> wrote:

Amani Alonazi, le lun. 14 janv. 2019 21:24:33 +0300, a ecrit:
> Hopefully last question :-) I'm using STARPU_DISK_SWAP_BACKEND=unistd. How can
> I analyze how much data transferred to disk during OOC computation? Shall I
> assume that anything exceeds the sustained BW that it runs at  the sustained
> BW?
>
> I clearly notice the extra time required in executing each tasks with big/
> smaller STARPU_LIMIT_CPU_MEM. I just want to quantify the amount of transfer in
> /out to disk.

I'm not sure which precise information do you want.  Do you mean you
want to know *during the execution* the amount of data transferred so
far?

We can easily add a function to get this.

Yes, I would like to know during the execution.

 

If you want to know for
the overall execution, it's the second column in

Data transfer statistics:
*************************
        0 -> 1  256292.63 MB    134.42MB/s      (transfers : 946 - avg 270.92 MB)

Samuel

OOC works perfectly fine. I just want to make sure that I'm getting the expected performance and quantify the BW of the application with ooc.

Many thanks,

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