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 > > > -- > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
