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  • Mansequencer
    Member
    • Jul 2010
    • 16

    Samtools pileup filesize limit

    Is there a file size limitation for samtools pileup command? I converted a 82GB sam file (output from bowtie) into a 25 GB compressed bam and then sorted it using samtools. Now when I try running samtools pileup on the sorted file (25GB), samtools quits saying memory leak. If samtools cannot handle large file, is there a way to split the sorted bam, analyze it with samtools pileup separately and then merge the output.
    Thanks.
  • NicoBxl
    not just another member
    • Aug 2010
    • 264

    #2
    what is your computer config ? how much RAM ?

    Comment

    • Mansequencer
      Member
      • Jul 2010
      • 16

      #3
      Hi Nicobxl,
      I am running samtools on a 16 core 64 bit linux server with 256 GB RAM. Going through the samtools manual, I did not notice any performance related command/options. Please let me know if you have any suggestions.
      Thanks,

      Comment

      • lh3
        Senior Member
        • Feb 2008
        • 686

        #4
        error message? I am sure 200GB BAMs have no problems. Pileup only uses tiny amount of memory.

        Comment

        • Mansequencer
          Member
          • Jul 2010
          • 16

          #5
          Hi Ih3,
          I am using this command to generate a txt file.
          samtools pileup -vcf filename.fas filename_sorted.bam > rawsnp.txt

          I ran samtools on a 1.7 GB file under 32 bit linux system and it worked fine. When I tried running the same file on the 64 bit server, samtools quits saying memory leak 1. continue anyway and then quits.

          Can you suggest some solution to this.
          Thanks,

          Comment

          • Jetse
            Member
            • Nov 2012
            • 38

            #6
            I also had a memory leak, I could solve this by sorting my bam files.

            (this was highest hit when googeling memory leak of mpileup and this is a common mistake)

            Comment

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