I am using the Web-based API to download star masses in sub-halos. Unfortunately, my scripts crash now and then with the following error
Traceback (most recent call last):
File "findstar_halo.py", line 63, in
with h5py.File(cutout,'r') as f:
File "/usr/lib/python2.7/dist-packages/h5py/hl/files.py", line 207, in _init
fid = make_fid(name, mode, userblock_size, fapl)
File "/usr/lib/python2.7/dist-packages/h5py/_hl/files.py", line 79, in make_fid
fid = h5f.open(name, h5f.ACC_RDONLY, fapl=fapl)
File "h5f.pyx", line 71, in h5py.h5f.open (h5py/h5f.c:1806)
IOError: unable to open file (File accessibilty: Unable to open file)
If I restart the script from where it stopped it runs just fine but usually it crashes again several minutes after. I guess this problem is related to the connection. Is there any way to avoid it?
thank you
kind regards
michela
PS: sometimes I obtain also another error with the same script:
Traceback (most recent call last):
File "findstar_halo.py", line 57, in
cutout = get(sub_prog_url+"cutout.hdf5", cutout_request)
File "findstar_halo.py", line 23, in get
r.raise_for_status()
File "/usr/lib/python2.7/dist-packages/requests/models.py", line 773, in raise_for_status
raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 500 Server Error: Internal Server Error
The second error seems be that a specific cutout request failed. In this case the raise_for_status() intentionally makes an error. Instead of this, you may want to change the script such that it waits a few seconds and then tries again.
Dear Illustris team,
I am using the Web-based API to download star masses in sub-halos. Unfortunately, my scripts crash now and then with the following error
Traceback (most recent call last): File "findstar_halo.py", line 63, in
with h5py.File(cutout,'r') as f:
File "/usr/lib/python2.7/dist-packages/h5py/hl/files.py", line 207, in _init
fid = make_fid(name, mode, userblock_size, fapl)
File "/usr/lib/python2.7/dist-packages/h5py/_hl/files.py", line 79, in make_fid
fid = h5f.open(name, h5f.ACC_RDONLY, fapl=fapl)
File "h5f.pyx", line 71, in h5py.h5f.open (h5py/h5f.c:1806)
IOError: unable to open file (File accessibilty: Unable to open file)
If I restart the script from where it stopped it runs just fine but usually it crashes again several minutes after. I guess this problem is related to the connection. Is there any way to avoid it?
thank you
kind regards
michela
PS: sometimes I obtain also another error with the same script: Traceback (most recent call last): File "findstar_halo.py", line 57, in
cutout = get(sub_prog_url+"cutout.hdf5", cutout_request)
File "findstar_halo.py", line 23, in get
r.raise_for_status()
File "/usr/lib/python2.7/dist-packages/requests/models.py", line 773, in raise_for_status
raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 500 Server Error: Internal Server Error
Hi Michela,
I am not entirely sure what is inside
findstar_halo.py, but the first error just seems to be that you are trying to open a file which doesn't exist. Better to first check that the file exists before you try to open it.The second error seems be that a specific cutout request failed. In this case the
raise_for_status()intentionally makes an error. Instead of this, you may want to change the script such that it waits a few seconds and then tries again.