Hi Brendan, Try supplying the first one -- "snap_000.0.hdf5". -Matt On Tue, Jul 1, 2014 at 2:25 PM, Brendan Griffen wrote:

It certainly exists:

bigbang% pwd

/bigbang/data/AnnaGroup/caterpillar/parent/gL100X10/outputs/snapdir_000

bigbang% ls

...

snap_000.156.hdf5 snap_000.213.hdf5 snap_000.40.hdf5 snap_000.99.hdf5

snap_000.157.hdf5 snap_000.214.hdf5 snap_000.41.hdf5 snap_000.9.hdf5

It seesm to load but not contain anything:

In [15]: data = ytf.sph.GadgetHDF5Dataset(basepath+ext,dataset_type='gadget_hdf5')

Out[15]: snap_000

On Tue, Jul 1, 2014 at 3:05 PM, Nathan Goldbaum wrote:

...

Does the file /bigbang/data/AnnaGroup/caterpillar/parent/gL100X10/outputs/snapdir_000/snap_000 exist?

What happens when you try to load it with GadgetHDF5Dataset instead of the load function?

The load function uses the _is_valid methods that are defined on each of the Dataset subclasses to determine the appropriate output type - that's usually the first place to look for things going wrong with loading datasets.

On Tue, Jul 1, 2014 at 12:00 PM, Brendan Griffen wrote:

...

Hi,

I'm trying to construct the cic mesh for Gadget HDF5 snapshots and I have the following:

import yt

from yt.mods import *

unit_base = {'UnitLength_in_cm' : 3.08568e+21,

'UnitMass_in_g' : 1.989e+43,

'UnitVelocity_in_cm_per_s' : 100000}

pf = load(basepath+ext, unit_base = unit_base, bounding_box = bbox)

Except I get the error:

--> 165 pf = load(basepath+ext, unit_base = unit_base, bounding_box = bbox)

/bigbang/data/bgriffen/lib/yt-x86_64/src/yt-hg/yt/convenience.pyc in load(*args, **kwargs)

73 mylog.error("None of the arguments provided to load() is a valid file")

74 mylog.error("Please check that you have used a correct path")

---> 75 raise YTOutputNotIdentified(args, kwargs)

76 for n, c in output_type_registry.items():

77 if n is None: continue

YTOutputNotIdentified: Supplied ('/bigbang/data/AnnaGroup/caterpillar/parent/gL100X10/outputs/snapdir_000/snap_000',) {'bounding_box': array([[ 0. , 149.00908955],

[ 0. , 149.00908955],

[ 0. , 149.00908955]]), 'unit_base': {'UnitVelocity_in_cm_per_s': 100000, 'UnitLength_in_cm': 3.08568e+21, 'UnitMass_in_g': 1.989e+43}}, but could not load!

Thanks.

BG

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Hey Brendan, Not to beat a dead horse, but does the problem persist for snap_001 (or some other snap that's not snap_000)? The only reason I ask is that some flavors of gadget have weird outputs for their _000 snapshot (oftentimes these are actually just the ICs). -d On Tue, Jul 1, 2014 at 3:25 PM, Brendan Griffen

wrote:

It certainly exists:

bigbang% pwd

/bigbang/data/AnnaGroup/caterpillar/parent/gL100X10/outputs/snapdir_000

bigbang% ls

...

snap_000.156.hdf5 snap_000.213.hdf5 snap_000.40.hdf5 snap_000.99.hdf5

snap_000.157.hdf5 snap_000.214.hdf5 snap_000.41.hdf5 snap_000.9.hdf5

It seesm to load but not contain anything:

In [15]: data = ytf.sph.GadgetHDF5Dataset(basepath+ext,dataset_type='gadget_hdf5')

Out[15]: snap_000

On Tue, Jul 1, 2014 at 3:05 PM, Nathan Goldbaum wrote:

...

Does the file /bigbang/data/AnnaGroup/caterpillar/parent/gL100X10/outputs/snapdir_000/snap_000 exist?

What happens when you try to load it with GadgetHDF5Dataset instead of the load function?

The load function uses the _is_valid methods that are defined on each of the Dataset subclasses to determine the appropriate output type - that's usually the first place to look for things going wrong with loading datasets.

On Tue, Jul 1, 2014 at 12:00 PM, Brendan Griffen < brendan.f.griffen@gmail.com> wrote:

...

Hi,

I'm trying to construct the cic mesh for Gadget HDF5 snapshots and I have the following:

import yt

from yt.mods import *

unit_base = {'UnitLength_in_cm' : 3.08568e+21,

'UnitMass_in_g' : 1.989e+43,

'UnitVelocity_in_cm_per_s' : 100000}

pf = load(basepath+ext, unit_base = unit_base, bounding_box = bbox)

Except I get the error:

--> 165 pf = load(basepath+ext, unit_base = unit_base, bounding_box = bbox)

/bigbang/data/bgriffen/lib/yt-x86_64/src/yt-hg/yt/convenience.pyc in load(*args, **kwargs)

73 mylog.error("None of the arguments provided to load() is a valid file")

74 mylog.error("Please check that you have used a correct path")

---> 75 raise YTOutputNotIdentified(args, kwargs)

76 for n, c in output_type_registry.items():

77 if n is None: continue

YTOutputNotIdentified: Supplied ('/bigbang/data/AnnaGroup/caterpillar/parent/gL100X10/outputs/snapdir_000/snap_000',) {'bounding_box': array([[ 0. , 149.00908955],

[ 0. , 149.00908955],

[ 0. , 149.00908955]]), 'unit_base': {'UnitVelocity_in_cm_per_s': 100000, 'UnitLength_in_cm': 3.08568e+21, 'UnitMass_in_g': 1.989e+43}}, but could not load!

Thanks.

BG

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