You're welcome. :)
I used a different graph for timings which has 15,606 nodes and 45,878
edges, link:
http://people.sc.fsu.edu/~jburkardt/data/metis_graph/4elt.graph. Can you
suggest any graph which gives boost mpi performance with increasing
processes?
You could use one of the generators. Your timing shows 40.80ms for one
process. I don't think that there is much that MPI can improve on this
result. At such a short run time, multiple MPI processes will be just a
pure overhead.
I am running boost tests for connected components, betweenness centrality
and page rank in directory $(BOOST_ROOT)/libs/graph_parallel/test, can I
use as input a .gr file rather than random graph which gets generated there
for input. Please suggest.
I am not sure I understand the question. You can use a .gr file if you have
one.
Also can I know how to convert this .gr file to matrix market file
format(.mtx) or vice versa?
Hmm, I am not sure if there is a ready made converter.
Thanks & Regards
Mayank Bakshi
Tata Consultancy Services Limited
Cell:- 7083955990
Mailto: mayank.bakshi@tcs.com
Website: http://www.tcs.com
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-----"Boost-users" wrote: -----
To: boost-users@lists.boost.org
From: Marcin Zalewski
Sent by: "Boost-users"
Date: 07/16/2015 05:56AM
Subject: Re: [Boost-users] Boost graph parallel issue
Mayank,
Which graph do you use as input? Are you using
https://github.com/boostorg/graph/blob/master/test/weighted_graph.gr ?
This graph is probably just too small to benefit from additional processes.
Could you try some input that runs for at least few seconds on a single
process?
-m
On Tue, Jul 14, 2015 at 9:36 AM Mayank Bakshi
wrote:
I want to utilize boost MPI to increase performance of graph code. When
I run standard examples in libs/graph_parallel/examples/, bfs does not
give better performance with more than 1 process taken in mpirun (using
openmpi 1.8.3). The timing is as follows:
No of Processes Time (ms)
1 40.80
2 82.19
4 92.67
8 76.86
16 91.61
Any suggestions to improve the performance with processes as graph
parallel should use more ranks for better performance.
Thanks & Regards
Mayank Bakshi
Tata Consultancy Services Limited
Cell:- 7083955990
Mailto: mayank.bakshi@tcs.com
Website: http://www.tcs.com
____________________________________________
Experience certainty. IT Services
Business Solutions
Consulting
____________________________________________
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