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SiliconValley
Joined: 24 May 2011
Posts: 6
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 Posted: Tue Feb 21, 2012 10:11 pm Post subject: Loop not vectorized/parallelized: potential early exits |
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The following loop is not vectorized due to "potential early exits". But I cannot see how this could be: no change to the loop variable, no break.
Thanks for enlightening me!
mario
| Code: | for(j=N-1, jnew=mNumGoodFreq-1; j >= 0; --j)
if(mGoodFreq[j])
{
mV[j*N + i] = mU[jnew*mNumGoodFreq + inew] * mSqrtCodonFreq[j];
--jnew;
}
else
{
mV[j*N + i] = (i == j) ? 1. : 0.;
}
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mkcolg
Joined: 30 Jun 2004
Posts: 4996
Location: The Portland Group Inc.
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| Posted: Wed Feb 22, 2012 9:29 am Post subject: |
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Hi Mario,
Can you post a reproducible example?
Thanks,
Mat |
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