Begin forwarded message:

From: Peter Teuben <teuben@astro.umd.edu> Subject: Re: dtruss to debug yt Date: September 28, 2014 at 21:22:13 EDT To: Mordecai-Mark Mac Low <mordecai@amnh.org>

Hi Mordecai

I don't see anything obviously wrong with this. Often it's one of the last read's or open's that points to something odd.

that's a long listing! 11k lines, of which almost 1/3 are just opening a file. Almost 3700 files! What the heck, i thought. Actually, 2790 or so are just attempt (i guess to check) and they are not present. So that still leaves the app with about 900 files to open. Looks like about 100 of those are opening more than once, kinda odd. Buy again, nothing obvious in terms of filling memory or something else.

Maybe that readline does some good, although I saw no reference to that in the dtruss output.

peter

On 09/28/2014 08:43 PM, Mordecai-Mark Mac Low wrote:

...

Dear Peter,

Thanks for the suggestion of using dtruss.

It turns out that it just needs to be run under su to do its work. However… although (or perhaps because) I got 1.3 Mb of output, I was unable to pull out a smoking gun about what was going wrong. I have posted the output to:

https://dl.dropboxusercontent.com/u/31830722/dtruss-trace-yt.txt

Do you see anything going obviously wrong?

- Mordecai

-- Mordecai-Mark Mac Low Curator & Professor +1-212-496-3443 Department of Astrophysics +1-212-769-5007 (fax) American Museum of Natural History mmaclow (Skype, Hangout) 79th St at CPW, NY, NY, 10024-5192, USA

-- Mordecai-Mark Mac Low Curator & Professor +1-212-496-3443 Department of Astrophysics +1-212-769-5007 (fax) American Museum of Natural History mmaclow (Skype, Hangout) 79th St at CPW, NY, NY, 10024-5192, USA