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 | 1 | initial version |
Thanks ahendrix for leading me in the right direction. After you pointed the problem with memory allocation, I read a little bit more about how memory allocation works with processes. I am running a 32-bit OS which limits to 2.75 - 3 GB address allocation memory, which is close to 18.4% of 16GB (= 2.94GB). So I'm definitely hitting memory limit. (Reference: http://en.wikipedia.org/wiki/3_GB_barrier)
Having the rosbag run at different speeds, and still failing at 18.4% memory usage every time makes sure that the above error is because I'm using a 32-bit machine.
I'll try running it on a 64-bit computer, and post the limitations (if any) of using octomap with 64 bit.
| | 2 | No.2 Revision |
Thanks ahendrix for leading me in the right direction. After you pointed out the problem with memory allocation, I read a little bit more about how memory allocation works with processes. I am running a 32-bit OS which limits to 2.75 - 3 GB address allocation memory, which is close to 18.4% of 16GB (= 2.94GB). So I'm definitely hitting memory limit. (Reference: http://en.wikipedia.org/wiki/3_GB_barrier)
Having the rosbag run at different speeds, and still failing at 18.4% memory usage every time makes sure that the above error is because I'm using a 32-bit machine.
I'll try running it on a 64-bit computer, and post the limitations (if any) of using octomap with 64 bit.
| | 3 | No.3 Revision |
Thanks ahendrix for leading me in the right direction. After you pointed out the problem with memory allocation, I read a little bit more about how memory allocation works with processes. I am running a 32-bit OS which limits to 2.75 - 3 GB address allocation memory, which is close to 18.4% of 16GB (= 2.94GB). So I'm definitely hitting memory limit. (Reference: http://en.wikipedia.org/wiki/3_GB_barrier)
Having the rosbag run at different speeds, and still failing at 18.4% memory usage every time makes sure that the above error is because I'm using a 32-bit machine.
I'll try running it on a 64-bit computer, and post the limitations (if any) of using octomap with 64 bit.
Edit: Now that I'm on a 64-bit machine (with 32GB RAM), I tried mappusing octomap. The system monitoring stats show that octomap at its peak uses up toing an outdoor area of around 100mx20m (post processing on recorded data) 50% of memory (range- 35-50%) along multiple processes running on multiple processors (using at least 1 complete core). Now I am convinced that a 64-bit machine with 16+GB RAM is a minimum requirement for building octomap for large areas.
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