Re: [mpgraph-developers] something about how to Write your own MapGraph algorithm

[Marco I. <ipp...@gm...>]

Hi all,
like JunZhao I ' m interested in MapGraph but I'm experiencing the same
problems. Is there a thoughrogh explained example?
Kind regards.
Marco
Il 20/ago/2015 14:44, "张军昭" <zha...@tj...> ha scritto:

>
>
>   My name is JunZhao Zhang,I am a graduate student in tianjin
> university,Tianjin,China.My research is semantic web information
> management.recently,I have read your paper *MapGraph: A High Level API
> for Fast Development of High Performance Graph Analytics on GPUs
> <http://./papers/MapGraph-SIGMOD-2014.pdf>,* and i am very interested in
> your job.I think cuda maybe a efficient way to deal with graph，i want to
> use MapGraph's high level api to write a new algorithm，but i am faced
> with some problem,so i write this letter to you.
>
>   Q1:Initialize(const int directed, const int nodes, const int edges, int
> num_srcs, int* srcs, int* d_row_offsets, int* d_column_indices, int*
> d_column_offsets, int* d_row_indices, DataType* d_edge_values, VertexType
> &vertex_list, EdgeType &edge_list, int* d_frontier_keys[3], MiscType*
> d_frontier_values[3]). The function has so many parameters and i feel
> confused.i wander  what "MiscType* d_frontier_values[3]" in this used
> for?why d_frontier_values's length is 3?
>
>    Q2:in struct gather_edge,the operator's parameter new_value,what is
> its function? what's more,the new_value here,whether its value is equal to
> the gathervlaue in struct apply?
>
>   Q3:in struct gather_sum,all algorithm's return value is right+left,why?
>
>   Q4:MapGraph's doc is so simple that i can't figure out how to write a
> algorithm,can you email me some detail information？
>
>   I am a new researcher  in GPU and cuda,my question maybe naive to
> you.but i need your help,looking forward to your reply！thank you.
>
> JunZhao zhang
> Tianjin university,Tianjin,China
> zha...@tj...
>
>
>
>
>
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