Hi, 

Does anyone know how to use the mpich2 command pls ? 
I wanted to execute Bowtie2 (a mapping tool) using my three nodes : VM-669, 
VM-670 and VM-671 
and with this command : 


srun mpiexec -n 3 -machinefile Mname.txt /omaha-beach/workflow/bowtie2.sh 



But I got this error : 


srun: error: Only allocated 1 nodes asked for 3 


-n for the number of processor (I got one processor per node cf joined file for 
slurm conf file) 
Mname.txt is my file with nodes name VM ... 
bowtie2.sh is like this : 



#!/bin/bash 

bowtie2 -p 3 -x Indexed_Bowtie -q -I 0 -X 1000 -1 r1.fastq -2 r2.fastq -S 
bowtie2.sam 




Thanks for your help, 
Siva 

Attachment: slur.conf
Description: Binary data

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