File error when using MPI with more than one node.

[alquraishi]

I'm able to run the uniclust-pipeline successfully using MPI when restricted to one node. However, once I use more than one node I get a file-related error in run_main.sh. Specifically, at this step:

+ mpirun --pernode --bind-to none mmseqs prefilter .../Apps/uniclust-pipeline/output/2016_06/tmp/input_step0 .../Apps/uniclust-pipeline/output/2016_06/tmp/input_step0 .../Apps/uniclust-pipeline/output/2016_06/tmp/pref_step0 --max-seqs 20 --comp-bias-corr 0 --k-score 145 --threads 16 --diag-score 1 --min-ungapped-score 15 --spaced-kmer-mode 1 --max-seq-len 32768
.../Apps/uniclust-pipeline/output/2016_06/tmp/pref_step0_tmp_0.0: File exists

My LSF configuration is very similar to the defaults in run_main.sh, basically:

#BSUB -n 32
#BSUB -R "span[ptile=16]"
export RUNNER="mpirun --pernode --bind-to none"
export COMMON="--threads 16"
export OMP_NUM_THREADS=16