Hi,
Maybe Amjad you should closely look at rtkfdk.cxx? I'm happy to answer a
specific question in this piece of code but RTK being open source, I'm
surprised by the question... Just track args_info.lowmem_flag and
args_info.divisions_arg to understand how we code these options.
Your other question is well answered by Chao (as usual, thanks!).
Good luck,
Simon
On 21/04/2016 15:02, Chao Wu wrote:
Hi,
--lowmem and --subset work for reducing memory footprint for
projection data, and --division for memory usage of reconstruction
calculation.
SetProjectionSubsetSize() does not correspond to --division but to
--subset flag.
If you read the code, you will find without --lowmen the reader is
updated before other part of the pipeline being executed; whereas with
--lowmen flag it is updated together with the pipeline, thus is streamed.
Regards,
Chao
2016-04-21 14:55 GMT+02:00 AMJAD N <[email protected]
<mailto:[email protected]>>:
Hi Simon,
How can i use --lowmem as a code? BTW I am using
SetProjectionSubsetSize(16) in my code. Is that what you meant by
-- divisions 8? still it doesn't work for 500^3.
I also tried by using itk::StreamingImageFilter to write the
reconstructed volume. My requirement is 1024^3 volume.
Thanks and Regards,
AMJAD N
On Thu, Apr 21, 2016 at 5:50 PM, Simon Rit
<[email protected]
<mailto:[email protected]>> wrote:
Try --lowmem and if it still doesn't work, --divisions 8 (the
higher this number the less memory).
Simon
On Thu, Apr 21, 2016 at 1:44 PM, AMJAD N
<[email protected] <mailto:[email protected]>> wrote:
Hi all,
I tried to run rtkfdk ( ROOSTER sample ) with following
command.
-p . -r .*.his -o fdk.mha -g geometry.rtk --hann 0.5 --pad
1.0 --dimension 500 --spacing 2
to identify the impact of large reconstructed volume
(500^3). Still it gives memory allocation error.
What might be the issue here?
Thanks and Regards
AMJAD N
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