You can get the headers installed by adding --with-devel-headers to the 
configure line.

On Apr 5, 2013, at 5:10 AM, chandan basu <cb...@nsc.liu.se> wrote:

> Hi,
> 
> I want to use OpenMPI dynamic collective algorithm selection using rules 
> file, e.g.
> 
> mpirun --mca coll_tuned_use_dynamic_rules 1 
> --mca_coll_tuned_dynamic_rules_file rules.txt ./myexe
> 
> I can see some examples in earlier discussions (given below). My question is 
> how do I know the ID for the different collectives. I do not see  
> coll_tuned.h in the installation folder . Is there any command to find the ID 
> of an algorithm. I am particularly interested in Alltoallv. I have checked 
> that coll_tuned_alltoallv_algorithm 1 and coll_tuned_alltoallv_algorithm 2 
> has lot of performance difference depending on data size and comm size. So I 
> think giving a rules file can improve the performance over a range of data 
> sizes and comm size. Any help in this regard will be appreciated.
> 
> With regards,
> 
> -Chandan
> ----------------------------------------
> Dr. Chandan Basu
> National Supercomputer Center
> Linköping University
> S-581 83 Linköping
> email: cb...@nsc.liu.se
> -----------------------------------------
> >1 # num of collectives 
> >3 # ID = 3 Alltoall collective (ID in coll_tuned.h) 
> >2 # number of com sizes 
> >1 # comm size 1 
> >1 # number of msg sizes 1 
> >0 1 0 0 # for message size 0, linear 1, topo 0, 0 segmentation 
> >8 # comm size 8 
> >4 # number of msg sizes 
> >0 1 0 0 # for message size 0, linear 1, topo 0, 0 segmentation 
> >32768 2 0 0 # 32k, pairwise 2, no topo or segmentation 
> >262144 1 0 0 # 256k, use linear 1, no topo or segmentation 
> >524288 2 0 0 # message size 512k+, pairwise 2, topo 0, 0 segmentation 
> ># end of first collective 
> 
> 
> -- 
> 
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