re’s automated variable copying and instead manually
specifying the relevant variables, using the <code>future()</code>
function’s <code>globals</code> parameter. You can pass it a character
vector (<code>globals = c(&quot;var_a&quot;, &quot;var_b&quot;)</code>) or a named list
(<code>globals = c(data = mtcars, iterations = n)</code>).</p>
<p>One final note about globals: as a safety measure,
<code>future()</code> will error if the size of the data to be shuttled
between the processes exceeds 500MB. Thi