<%@include file="includes/setup.md.rsp"%>

<%@string colname="colProds"%>
<%@string rowname="rowProds"%>
<%@meta title="${colname}() and ${rowname}() benchmarks"%>
<%@meta author="Henrik Bengtsson"%>
<%@meta date="2014-11-15"%>

<%@include file="${header}"%>


# <%@meta name="title"%>

This report benchmark the performance of <%=colname%>() and <%=rowname%>() against alternative methods.

## Alternative methods

* <%=colname%>()/<%=rowname%>() using method="expSumLog"
* apply() + prod()
* apply() + product()


## Data
```r
<%=withCapture({
<%@include file="R/random-matrices.R"%>
data <- rmatrices(mode = "double")
})%>
```

## Results

<% for (dataLabel in names(data)) { %>
<% message(dataLabel) %>
### <%=dataLabel%> matrix


```r
<%=withCapture({
X <- data[[.dataLabel.]]
})%>
<% gc() %>
<%=withCapture({
colStats <- microbenchmark(
 "colProds w/ direct"    = colProds(X, method = "direct", na.rm = FALSE),
 "colProds w/ expSumLog" = colProds(X, method = "expSumLog", na.rm = FALSE),
 "apply+prod"            = apply(X, MARGIN = 2L, FUN = prod, na.rm = FALSE),
 "apply+product"         = apply(X, MARGIN = 2L, FUN = product, na.rm = FALSE),
 unit = "ms"
)
})%>
<%=withCapture({
X <- t(X)
})%>
<% gc() %>
<%=withCapture({
rowStats <- microbenchmark(
 "rowProds w/ direct"    = rowProds(X, method = "direct", na.rm = FALSE),
 "rowProds w/ expSumLog" = rowProds(X, method = "expSumLog", na.rm = FALSE),
 "apply+prod"            = apply(X, MARGIN = 1L, FUN = prod, na.rm = FALSE),
 "apply+product"         = apply(X, MARGIN = 1L, FUN = product, na.rm = FALSE),
 unit = "ms"
)
})%>
```

<% crBenchmarkResults(colStats, rowStats, tags=dataLabel) %>

<% } # for (dataLabel ...) %>


<%@include file="${footer}"%>


<%---------------------------------------------------------------------------
HISTORY:
2014-06-09
o Created.
---------------------------------------------------------------------------%>