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

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

Hi Samuel,

Thanks for your input.

Where does it appear as memory node? I see node 0 and node 1 but I can't see disk in the stats output. Speaking of traces, does it take the time spent on GPUs? I don't see it in my fxt output traces. 

The execute_on_all_wrapper time sometimes increases dramatically, any idea why? 

Many thanks,

Amani

On Mon, Jan 14, 2019 at 4:47 PM Samuel Thibault <samuel.thibault@inria.fr> wrote:

Hello,

Amani Alonazi, le lun. 14 janv. 2019 14:44:16 +0300, a ecrit:
> I would like to profile and understand how much data are swapped in/out disk
> when enabling OOC? Is it possible? I see memory statistics from GPU/CPU and RAM
> BW. Can I get the same for disk?

The disk appears as a memory node, just like the main RAM and the GPU
RAM. Similarly, it appears in the FxT trace as a memory node, and arrows
show the transfers.

> One more thing, what is the timing of execute_on_all_wrapper? What does it
> represent?

It's just a helper to initialize CUDA on all GPUs and such.

Samuel

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Amani AlOnazi
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