Re: [yt-users] yt memory usage
by Stella Offner
Hi Matt,
That modified code you sent appears to be an enormous improvement!
Slices though the interpolated data array and the AMR data look quite
similar, so as far as I can see it is grabbing and interpolating the
correct data. I'll let you know if any other issues come up.
Thanks for your help and the quick response!
Stella
9 years, 12 months
yt memory usage
by Stella Offner
Hi,
I've been working on setting up yt code to interpolate from an AMR
dataset to a spherical grid of points. Thanks to help from Jeff, I've
used a covering grid to extract the data and then
TrilinearFieldInterpolator to derive the values on the grid of
points. The problem is that the covering grid allocates the entire
data array on the maximum level ~4500^3, which doesn't fit into the
memory on the Nersc Davinci machine (72 gb max). I really only need
the cells adaject to points in the output grid, which is < 150^3. Is
there a more efficient way of using covering_grid or extracting the
AMR data that doesn't involve first interpolating the entire region
to the maximum level? (The code definitely works for smaller grids/
lower max levels, but I really need to get at the high resolution AMR
data).
Thanks for your help!
Stella
9 years, 12 months
Output Resolution
by david collins
Hi there--
What's the relationship between the resolution of a plot and the
fig_size argument in add_projection? Is there a dpi flag somewhere,
or something so I can control the number of pixels in the output
image?
Thanks,
d.
10 years
HaloProfiler help
by Stephen Skory
Hi,
(this question refers to code in the trunk version of yt, not the 1.0 version.)
I am trying to calculate the virial mass for about 70,000 haloes in a fairly large cosmology simulation. Out of those, I'm only getting about 61,000 lines in VirialQuantities.out, and of those, 20,000 are actually nans. So out of 70,000 haloes from HOP, I have only about 40,000 virial masses.
I don't imagine many people have run the HaloProfiler on a dataset this large, but is a 40% error rate typical? Can you suggest any strategies to minimize the number of nans and missing haloes? Is it likely I'm doing something wrong (which is a strong possibility)?
Thanks!
_______________________________________________________
sskory(a)physics.ucsd.edu o__ Stephen Skory
http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student
________________________________(_)_\(_)_______________
10 years
smoothed plots
by david collins
Hi--
Is it possible to smooth plots one gets from plot_collection.add_projection?
d.
ps. Sorry to people on yt-dev, this is a question for the general user
list, not just the dev people.
d.
10 years
ParticleMassMsun
by Stephen Skory
Hi,
if I do sp["ParticleMassMsun"], are the masses in Msun/h or Msun?
Thanks!
_______________________________________________________
sskory(a)physics.ucsd.edu o__ Stephen Skory
http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student
________________________________(_)_\(_)_______________
10 years
Mac OS X matplotlib WX backend
by Thomas Statler
I've just installed yt on an Intel Mac and am trying to follow the
examples for time series plots with iyt. When the pylab.plot statement
is executed, the python plot window appears and python hangs (spinning
beachball cursor). If I wait long enough a plot eventually shows up
but python is still hung.
This appears to be a known problem with the Enthought python
distribution. (See https://svn.enthought.com/epd/ticket/186 .) I have
verified that I get the same behavior using ordinary ipython rather
than iyt. Happily there is also a known solution for ipython: simply
invoke ipython with the -whtread option. I have tried this and it
solves the problem--- in ipython.
My question now is how to do the same thing for iyt. Is there a build
option somewhere, so that iyt will start ipython with the -wthread flag?
10 years
Re: [yt-users] Mac OS X matplotlib WX backend
by Stephen Skory
Thomas,
> Can you try changing the first line to /path/to/yt/bin/ipython -wthread and see
> if that works?
Just to be perfectly clear, I meant #!/path/to/yt/bin/ipython -wthread
_______________________________________________________
sskory(a)physics.ucsd.edu o__ Stephen Skory
http://physics.ucsd.edu/~sskory/ _.>/ _Graduate Student
________________________________(_)_\(_)_______________
10 years
