<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On May 21, 2014, at 1:57 PM, Evan Cheng <<a href="mailto:evan.cheng@apple.com">evan.cheng@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div><br class="Apple-interchange-newline">On May 21, 2014, at 4:29 AM, Hal Finkel <<a href="mailto:hfinkel@anl.gov">hfinkel@anl.gov</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">----- Original Message -----<br><blockquote type="cite">From: "Evan Cheng" <<a href="mailto:evan.cheng@apple.com">evan.cheng@apple.com</a>><br>To: "Hal Finkel" <<a href="mailto:hfinkel@anl.gov">hfinkel@anl.gov</a>><br>Cc: "LLVM Developers Mailing List" <<a href="mailto:llvmdev@cs.uiuc.edu">llvmdev@cs.uiuc.edu</a>><br>Sent: Monday, May 19, 2014 3:35:45 PM<br>Subject: Re: [LLVMdev] [RFC] Benchmarking subset of the test suite<br><br><br><br><br>On May 4, 2014, at 5:39 AM, Hal Finkel <<span class="Apple-converted-space"> </span><a href="mailto:hfinkel@anl.gov">hfinkel@anl.gov</a><span class="Apple-converted-space"> </span>> wrote:<br><br><br>security-blowfish<br><br>Sorry that I'm late to this. I scanned the list you provided and it<br>makes sense to me. But this one caught me by surprise. I remember we<br>put quite a bit of effort tuning the scheduler to improve codegen<br>quality of blowfish. Are you sure this particular benchmark isn't<br>serving its purpose?<br></blockquote><br>Yes. As currently configured, the running time is much too short. On PPC64, the running time is <= 0.001s, and -O3 and -O0 cannot be statistically distinguished. On x86-64, the running time is even smaller (timeit reports 0.0000 for -O3 builds).<br></div></blockquote><div><br></div>Can we fix the short running time? Unless there is another blowfish benchmark in the suite, I would like to keep it.</div></blockquote><div><br></div><div>FYI, the version that we tuned is available in the public domain here: <a href="http://www.openwall.com/crypt/">http://www.openwall.com/crypt/</a></div><div><br></div><div>It’s quite different than the one in MiBench. The feature that was interesting to us at the time was the encryption of two blocks in parallel.</div><div><br></div><div>The v1.2 code looks like it has a testing harness that could be adapted as a benchmark. </div><div><br></div><div><a href="http://llvm.org/bugs/show_bug.cgi?id=19860">http://llvm.org/bugs/show_bug.cgi?id=19860</a></div><div><br></div><div>-Andy</div></div><div><br><blockquote type="cite"><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Evan</div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br><blockquote type="cite"><div style="font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br>-Hal<br><br><blockquote type="cite"><br><br>Evan<br></blockquote><br>--<span class="Apple-converted-space"> </span><br>Hal Finkel<br>Assistant Computational Scientist<br>Leadership Computing Facility<br>Argonne National Laboratory</div></blockquote></div><br style="font-family: Helvetica; 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