Hello everyone,

I am using samtools mpileup on multi bam files to genrate vcf file.
mpileup seems to be working with only 6 bam files but not on more than
6 files. If I enter more than 6 files, samtools finishes without error
in approx 2min and the vcf file generated is empty except for the
header. I have used this command line in the past to call vcf from as
many as 10 bam files. Now I need to increase it to 58 bam files. But
it is failing if I include more than 6 bam files.

the command line I am using

/home/sb47/Programs/samtools-1.3.1/samtools mpileup -uv -l
/scratch/sb47cp/global_seq_Rnorvegicus/858_positions -f
/scratch/sb47cp/Ref_5_71/Rattus_norvegicus.Rnor_5.0.71.dna_sm.toplevel.fa
-b bams.list | /home/sb47/Programs/samtools-1.3.1/bcftools-1.3.1/bcftools
call -c > /scratch/sb47cp/FranceIce_858loci.vcf

bams.list is the list of bam files.

Can anyone please help me with this? I unable to figure out why it is
not working.

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