[parsec-users] Blackscholes TBB Version: err_chk uses wrong tolerance

Christian Jülg c.juelg at googlemail.com
Tue Dec 6 18:30:35 EST 2011


Hi,

as I noticed here
https://lists.cs.pr
incieton.edu/pipermail/parsec-users/2011-May/001135.html<https://lists.cs.princeton.edu/pipermail/parsec-users/2011-May/001135.html>

The error treshold for "err_chk" in blackscholes has been changed from
"1e-5" to "1e-4" in Parsec 2 or 2.1.

Yet the TBB version of the blackscholes benchmark still uses the old
treshold which leads to errors on large datasets using "float".

In the attachment is a patch that fixes the tolerance, bringing it in line
with the other blackscholes variants.

Best Regards
Christian
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