Yes, it is a mapping to assembled metagenomic contigs which has 6907774
sequences.




On 6/16/15, 3:57 AM, "John Marshall" <j...@sanger.ac.uk> wrote:

>On 15 Jun 2015, at 17:46, Lo, Chien-Chi <chien...@lanl.gov> wrote:
>> Samtools (v1.2) merge doesn¹t output any file of my two bam file and no
>>message throwing out. It just hang there and reserved ~2.0g memory.
>>However, 0.1.18 version finish the merging in ~2 mins.
>> 
>> The two sorted bam files are 449M and 448M in size.
>
>Do your bam files have many many headers?  Samtools 1.2 merge could run
>for a very long time on such headers on some platforms [1]; thanks to
>Nathan Weeks, this problem has been fixed and the next samtools release
>should merge such files as fast as 0.1.x samtools.
>
>Giuseppe Aprea <giuseppe.ap...@gmail.com> wrote previously:
>> I am trying to merge 4 sorted bam files with samtools (v 1.2) but I get
>>the following error:
>> 
>> 39656 Segmentation fault      (core dumped) samtools merge merging.bam
>>*.sorted.realigned.nodup.sorted.bam
>
>Giuseppe's problem appears to be different, and it would indeed be useful
>to see a stack trace.
>
>    John
>
>[1] https://github.com/samtools/samtools/pull/337
>
>-- 
> The Wellcome Trust Sanger Institute is operated by Genome Research
> Limited, a charity registered in England with number 1021457 and a
> company registered in England with number 2742969, whose registered
> office is 215 Euston Road, London, NW1 2BE. 


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