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From "Edward J. Yoon" <edwardy...@apache.org>
Subject Re: how hams bsp is going to relate to pregel
Date Thu, 15 Jul 2010 00:24:15 GMT

Pregel is graph-specific: a large-scale graph computing framework,
based on BSP model.

BTW, as far as I know, the BSP model also has been researched for many
years in the field of sparse matrix computation and QR/QZ
factorisation. In addition to graph analysis, there are many other
algorithms, which have similar problems with graph, in mathematics.

Hence, now we're trying to implement low level BSP computing engine as
a more generalized framework. IMO, it can be a basic part of Pregel.

You can testing the BSP program locally using TRUNK...


On Wed, Jul 14, 2010 at 6:46 PM, Claudio Martella
<claudio.martella@tis.bz.it> wrote:
> Hi,
> I'm trying to understand the relationship between hama and pregel, or
> massive graph processing in general. At the beginning i checked the
> documentation and the code, few months ago, and i relalized that hama
> BSP was going towards a Hamburg/Pregel implemetnation, aside of the
> matrix package. Now i've been reported that "/Hama's target was changed.
> As you know, the pregel is a processing framework for large scale graph.
> But, Hama aims at a distributed scientific package on Hadoop for massive
> matrix and graph data. It is not specified for graph processing. A
> system like Pregel might be an application of Hama."
> /What does "a distributed scientific package on hadoop for massive
> matrix and graph data" mean? If it's not for processing, are you writing
> a graphDB?
> How's hama's goal going to be related to something like pregel?
> Thanks
> Claudio
> --
> Claudio Martella
> Digital Technologies
> Unit Research & Development - Analyst
> TIS innovation park
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Best Regards, Edward J. Yoon

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