usearch_i86linux32 v6.1.544, 4.0Gb RAM (30.8Gb total), 8 cores
usearch61 --maxaccepts 1 --consout /home/ubuntu/usearch61_chimera_checking/seqs.fna_consensus_with_abundance.fasta --usersort --id 0.97 --sizeout --minseqlength 64 --wordlength 8 --uc /home/ubuntu/usearch61_chimera_checking/seqs.fna_consensus_with_abundance.uc --cluster_smallmem /home/ubuntu/seqs.fna --maxrejects 8 --strand plus --log /home/ubuntu/usearch61_chimera_checking/seqs.fna_smallmem_clustered.log 
Started Thu Jan 21 21:02:52 2016

      Alphabet  nt
    Word width  8
     Word ones  8
        Spaced  No
        Hashed  No
         Coded  No
       Stepped  No
         Slots  65536 (65.5k)
       DBAccel  100%