Dear all,

When I am running samtools to sort BAM files by read names, sometimes 
samtools will give a truncated output file without warning. Most of the 
output files seems to have the expected file size. Therefore I suspect 
the truncation may be due to out of memory kill by the kernel, due to 
the server being under heavy load when samtools is running. I am unable 
to check the log file to verify whether it is indeed an OOM issue due to 
the lack of admin right.

My question is that, how will samtools behave when it is running out of 
memory? Will it give a warning, instead of just producing a truncated 
output file? Or is this truncation due to other issues not related to 
memory?

I am using the basic command 'samtools sort -n $f ${f/.bam/.sorted}' in 
a for loop. The BAM files have an average size of 500-600 MB, with about 
4 million reads.

The samtools version that gave this problem is either 0.1.17 or 0.1.18. 
I have tried version 1.1, but I am unable to replicate the problem 
(probably because the server was not under heavy load).

Many thanks,
Chee



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