[yt-users] YT parallel error

[Sam Skillman]

Hi John,

Can you paste the full traceback using: http://paste.yt-project.org?  Also,
are you running with mpirun python your_script.py --parallel?  The only
thought I have at the moment is that there is a mismatch between the MPI
you are running mpirun with and the MPI that mpi4py was built with.

Also, which version of yt are you using (the results of "yt instinfo")?

Thanks,
Sam


On Sat, Dec 28, 2013 at 11:36 PM, John Regan <johnanthonyregan at gmail.com>wrote:

> Hi All,
>
> I've started to see a strange error in a simple enough parallel
> computation.
>
> I can reproduce it with the script below but with some other scripts where
> the code is embedded it runs fine so it may be a race condition.
>
> from yt.mods import *
>
> pf = load("/wrk/regan/H2/Ctrl/DD0035/Data0035")
> v, c = pf.h.find_max("Density")
> print v, c
>
> Thanks in advance for any help!
>
> Cheers,
> John
>
> Error:
>
> Traceback (most recent call last):
> P001 yt : [INFO     ] 2013-12-29 09:31:27,756 Max Value is 3.67832e-16 at
> 0.5025423020124483 0.4896353334188484 0.4947452098131160 in grid
> EnzoGrid_1214 at level 18 (3, 3, 2)
> Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
> P003 yt : [INFO     ] 2013-12-29 09:31:27,756 Max Value is 3.67832e-16 at
> 0.5025423020124483 0.4896353334188484 0.4947452098131160 in grid
> EnzoGrid_1214 at level 18 (3, 3, 2)
>   File "ptest.py", line 5, in <module>
> Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
> P002 yt : [INFO     ] 2013-12-29 09:31:27,756 Max Value is 3.67832e-16 at
> 0.5025423020124483 0.4896353334188484 0.4947452098131160 in grid
> EnzoGrid_1214 at level 18 (3, 3, 2)
> Traceback (most recent call last):
> P004 yt : [INFO     ] 2013-12-29 09:31:27,756 Max Value is 3.67832e-16 at
> 0.5025423020124483 0.4896353334188484 0.4947452098131160 in grid
> EnzoGrid_1214 at level 18 (3, 3, 2)
> Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
> P005 yt : [INFO     ] 2013-12-29 09:31:27,756 Max Value is 3.67832e-16 at
> 0.5025423020124483 0.4896353334188484 0.4947452098131160 in grid
> EnzoGrid_1214 at level 18 (3, 3, 2)
> Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
> P006 yt : [INFO     ] 2013-12-29 09:31:27,756 Max Value is 3.67832e-16 at
> 0.5025423020124483 0.4896353334188484 0.4947452098131160 in grid
> EnzoGrid_1214 at level 18 (3, 3, 2)
> Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
> Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
>  Traceback (most recent call last):
>   File "ptest.py", line 5, in <module>
>   File "ptest.py", line 5, in <module>
>     v, c = pf.h.find_max("Density")
>     v, c = pf.h.find_max("Density")
>     v, c = pf.h.find_max("Density")
>     v, c = pf.h.find_max("Density")
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>     v, c = pf.h.find_max("Density")
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>     v, c = pf.h.find_max("Density")
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>     v, c = pf.h.find_max("Density")
>     v, c = pf.h.find_max("Density")
>     v, c = pf.h.find_max("Density")
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 51, in find_max
>     mg, mc, mv, pos = self.find_max_cell_location(field, finest_levels)
>     mg, mc, mv, pos = self.find_max_cell_location(field, finest_levels)
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 66, in find_max_cell_location
>     mg, mc, mv, pos = self.find_max_cell_location(field, finest_levels)
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 66, in find_max_cell_location
>   File
> "/homeappl/home/regan/appl_taito/YT/yt-x86_64/src/yt-hg/yt/data_objects/object_finding_mixin.py",
> line 66, in find_max_cell_location
>     mg, mc, mv, pos = self.find_max_cell_location(field, finest_levels)
>
>
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