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stratosphere / incubator-systemml

Mirror of Apache SystemML (Incubating)

Apache License 2.0

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Open questions #9

Open fschueler opened 8 years ago

fschueler commented 8 years ago

Collections of open questions that we encountered during the flink-integration:

Assumptions for MapmmChain t(X) %*% (X %*%v)
- BlockSizes
- A1: Vector is always one block, always fits in memory
- Partitioning
- thiw works if the matrix is row-wise partitioned, e.g. one row fits into one block AND the broadcasted vector fits in one block.