Need help in understanding the OSH.

[nikhilanshuman]

Hi,
While reading the "Parallel job advenced user guide" , i came across following OSH :

##I TFSC 004000 14:51:50(000) <main_program>
This step has 1 dataset:
ds0: {op0[1p] (sequential generator)
eOther(APT_HashPartitioner { key={ value=a }
})->eCollectAny
op1[2p] (parallel APT_CombinedOperatorController:tsort)}
It has 2 operators:
op0[1p] {(sequential generator)
on nodes (
lemond.torrent.com[op0,p0]
)}
op1[2p] {(parallel APT_CombinedOperatorController:
(tsort)
(peek)
) on nodes (
lemond.torrent.com[op1,p0]
lemond.torrent.com[op1,p1]
)}
It runs 3 processes on 2 nodes.

I am unable to understand how the number of processes and the operators have been calculated here.Also,please explain what does "op1[2p],[op1,p0]" mean.

[ArndW]

P0 and P1 are partitions 0 and 1, "OP" are operators. The confusions stems from a sequential operator that doesn't run on both nodes and operator combination of stages at runtime.

[nikhilanshuman]

P0 and P1 are partitions 0 and 1, "OP" are operators. The confusions stems from a sequential operator that doesn't run on both nodes and operator combination of stages at runtime. ...

Thanks ArndW.Just one doubt is how the number of processes can be calculated from the given OSH?

[ray.wurlod]

2p + 1p = 3 processes as reported in the final line.