Check to ensure that OMPI was built with the required support - if you run 
ompi_info, do you see an output line that indicates the RAS tm module was built?

If not, then that is the problem.

> On Dec 3, 2015, at 10:36 AM, Gregory Cary <gregc...@andrew.cmu.edu> wrote:
> 
> Hello,
> 
> I'm having difficulty running mpiblast using the code pasted below. The goal 
> is to run the blast search in parallel on 3 different nodes (2 processors, 8 
> CPU cores, and 24 GB RAM per node). Whenever I run mpiexec without the -n 
> parameter I get the error message: "Sorry, mpiBLAST must be run on 3 or more 
> nodes". Whenever I run mpiexec and pass it "-n 24" the job runs, but it takes 
> and excessive amount of time (>8h to search 10 records) and only one of the 
> three designated nodes is active (memory usage, cpu %, network I/O) during 
> the job while the other allocated nodes are quiet. 
> 
> What am I doing wrong here? It seems as though mpiexec isn't getting the 
> relevant info about number of allocated nodes and/or the identities of the 
> specific hosts from the PBS scheduler. Can anyone help me out with this?
> 
> Much appreciated!
> ----------------------------
> Greg Cary, Ph.D.
> Carnegie Mellon University
> Dept. of Biological Sciences
> Hinman Lab
> 412-268-9290
> 
> #!/bin/sh
> #PBS -N MPI_BLAST -e error_log.txt
> #PBS -l nodes=3:ppn=8 -n
> #PBS -l walltime=24:00:00
> #PBS -M gregc...@andrew.cmu.edu -m abe
> #PBS -q pool1
> 
> mpiexec\
> mpiblast -p blastp -d nr -e 1e-5 -m 7 -v 10000\
> --removedb\
> --time-profile=time-profile_1.txt\
> -i ~/fasta_files/test2.fa\
> -o ~/fasta_files/blast_results/mpi_test1_10recs.xml
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> Link to this post: 
> http://www.open-mpi.org/community/lists/users/2015/12/28128.php

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