Opened 9 years ago

Closed 9 years ago

#28 closed defect (invalid)

HTM memory problem in 1080p encoding

Reported by: Tomohiro Ikai Owned by: tech
Priority: minor Component: HTM software
Version: Keywords:
Cc: tech, jct-3v@…

Description

At new HTM-6.2-dev integration phase, my simulation sometimes failed. I thought this was due to memory usage increase of the integrated version and checked memory usage before and after integration (HTM-6.2 and HTM-6.2-dev). Then i found the following strange behaviour (potential bug) in HTM encoder.

The memory usage of 720p was constant (2.4 G bytes in my environment) while that of 1080p varies from 2.8G bytes to 3.9Gbytes. The memory usage varies by runs!

This strange behavior occcued at leaset in HTM-6.0, HTM-6.2 and HTM-6.2-dev branch2. Please see the attached file.

Attached is my memory usage reports, which is got by qacct -j $job | grep maxvmem

I suppose this "randomly" different memory usage occured "only in 1080p" suggests potential bugs in HTM.

Attachments (1)

memory_usage.xlsx (12.3 KB) - added by Tomohiro Ikai 9 years ago.

Download all attachments as: .zip

Change history (3)

comment:1 Changed 9 years ago by DefaultCC Plugin

  • Cc tech jct-3v@… added

Changed 9 years ago by Tomohiro Ikai

comment:2 Changed 9 years ago by Tomohiro Ikai

  • Resolution set to invalid
  • Status changed from new to closed

Another expert kindly checked their memory usage and it shows there are no strange behaviour in 1080p cases as well as 720p cases. It seems my report was not correct and HTM is good. Sorry for the confusions. So I'd like to close this ticket.

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  • Gerhard Tech(Owner, Subscriber, Always)
  • jct-3v@…(Subscriber)
  • Karsten Suehring(Always)
  • Tomohiro Ikai(Reporter, Participant)