On Mon, Mar 4, 2013 at 11:39 AM, Łukasz Dąbek <span dir="ltr">&lt;<a href="mailto:sznurek@gmail.com" target="_blank">sznurek@gmail.com</a>&gt;</span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

Thank you for your help! This solved my performance problem :)<br>
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Anyway, the second question remains. Why performance of single<br>
threaded calculation is affected by RTS -N parameter. Is GHC doing<br>
some parallelization behind the scenes?<br></blockquote><div><br></div><div>I believe it&#39;s because -N makes GHC use the threaded RTS, which is different from the non-threaded RTS and has some overheads therefore. </div>

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