Github user witgo commented on the pull request:
https://github.com/apache/spark/pull/828#issuecomment-43790944
@mateiz, @mengxr
I am using [the code](https://github.com/witgo/spark/compare/cachePoint) to
test ALS.
A brief description of the test:
| Item | Description |
| ------------- | ----------- |
|cluster |`3 servers`,`36 core cpus`,`2.5T HDD`,`120G memory`|
|data| `700 million`|
|code|`val model = ALS.trainImplicit(ratings, 25, 30, 0.065, -1, 40.0)`|
|time|`12.5 h`|
|shuffle write| `4.72T`|
|largest local dir|`200G`|
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