Opened 5 years ago

#1626 new defect

CarpetIOASCCI transfers too much data for output

Reported by: Roland Haas Owned by: Erik Schnetter
Priority: minor Milestone:
Component: Carpet Version: development version
Keywords: CarpetIOASCII Cc:


CarpetIOASCII currently transfers all patches from all processes to the io process which then discard everything that does not need to be output for 1d or 2d output. Technical details:

The commstate loop in line 660 of
uses data_ext to call copy_from() on tmpdatas which were also created
using data_ext.
data_ext is set to light_boxes[...].exterior while the actual output
extent is given by ext as returned by GetOutputBBox.

If I run the attached parfile with "mpirun -n 4 cactus_sim
ioascii.par", then I get output from only components 0 and 2 but not 1
and 3 in the x.x.asc file. However, adding some poisoning and debug
output to I seem to receive all data from all components
(patch attached as well) even those of which no data makes it into the
output file.

Attachments (1)

ioascii.par (2.4 KB) - added by Roland Haas 5 years ago.

Download all attachments as: .zip

Change History (1)

Changed 5 years ago by Roland Haas

Attachment: ioascii.par added

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